Tighten checks for multidimensional array input (Bruce Momjian)
\nPreviously, an input array string that started with a single-element sub-array could later contain multi-element sub-arrays, e.g. '{{1}, {2,3}}'::int[] would be accepted.
", "text": "Tighten checks for multidimensional array input (Bruce Momjian) Previously, an input array string that started with a single-element sub-array could later contain multi-element sub-arrays, e.g. '{{1}, {2,3}}'::int[] would be accepted.", "title": "Tighten checks for multidimensional array input", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "133bbe7b40ddca0f20c5e4c77fc3ddaba5750aa1c5c7a287d786cc5b59615faf", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Tighten checks for multidimensional array input (Bruce Momjian) Previously, an input array string that started with a single-element sub-array could later contain multi-element sub-arrays, e.g. '{{1}, {2,3}}'::int[] would be accepted.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/001", "db_id": "60c26f468d55fdac09bb3c2b31186075", "patch_ids": [], "statement_hash": "d1f8be133565e794bd60454b2e56e55545df78b4cbc8d96b008e4be38e7b51e6", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-9d072684d2b7f1c5", "migration": true}, {"id": "9.4.0-dd6346430a580379", "cves": [], "html": "When converting values of type date, timestamp or timestamptz to JSON, render the values in a format compliant with ISO 8601 (Andrew Dunstan)
\nPreviously such values were rendered according to the current DateStyle setting; but many JSON processors require timestamps to be in ISO 8601 format. If necessary, the previous behavior can be obtained by explicitly casting the datetime value to text before passing it to the JSON conversion function.
", "text": "When converting values of type date, timestamp or timestamptz to JSON, render the values in a format compliant with ISO 8601 (Andrew Dunstan) Previously such values were rendered according to the current DateStyle setting; but many JSON processors require timestamps to be in ISO 8601 format. If necessary, the previous behavior can be obtained by explicitly casting the datetime value to text before passing it to the JSON conversion function.", "title": "When converting values of type date, timestamp or timestamptz to JSON, render the values in a format compliant with ISO 8601", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "8c29904c978dbd9f2f0a80c905eec0fda25597911514d709a4242d0ca31b03f6", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "When converting values of type date, timestamp or timestamptz to JSON, render the values in a format compliant with ISO 8601 (Andrew Dunstan) Previously such values were rendered according to the current guc-datestyle setting; but many JSON processors require timestamps to be in ISO 8601 format. If necessary, the previous behavior can be obtained by explicitly casting the datetime value to text before passing it to the JSON conversion function.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/002", "db_id": "83a0e27304ddf64b13db7541664d195b", "patch_ids": [], "statement_hash": "961368c175c8f44583211dbf8c0734eebb10bbb115d288db1c3876cc058d7dc4", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-dd6346430a580379", "migration": true}, {"id": "9.4.0-482ced990c2c5488", "cves": [], "html": "The json #> text[] path extraction operator now returns its lefthand input, not NULL, if the array is empty (Tom Lane)
\nThis is consistent with the notion that this represents zero applications of the simple field/element extraction operator ->. Similarly, json #>> text[] with an empty array merely coerces its lefthand input to text.
", "text": "The json #> text[] path extraction operator now returns its lefthand input, not NULL, if the array is empty (Tom Lane) This is consistent with the notion that this represents zero applications of the simple field/element extraction operator ->. Similarly, json #>> text[] with an empty array merely coerces its lefthand input to text.", "title": "The json #> text[] path extraction operator now returns its lefthand input, not NULL, if the array is empty", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "e020e93d19ee194dd750ab2e91776d02b4c8a3a51c20788588291a4f7a2cb4ef", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "The json #> text[] path extraction operator now returns its lefthand input, not NULL, if the array is empty (Tom Lane) This is consistent with the notion that this represents zero applications of the simple field/element extraction operator ->. Similarly, json #>> text[] with an empty array merely coerces its lefthand input to text.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/003", "db_id": "d19a9e07bbb6c7f27251cdcec5ad0e8c", "patch_ids": [], "statement_hash": "89c7f41ac942d3a1f303f25813dc538bb9df8775b503a887c2b8df1d1dc6d0d6", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-482ced990c2c5488", "migration": true}, {"id": "9.4.0-d3d9d02d0900102a", "cves": [], "html": "Corner cases in the JSON field/element/path extraction operators now return NULL rather than raising an error (Tom Lane)
\nFor example, applying field extraction to a JSON array now yields NULL not an error. This is more consistent (since some comparable cases such as no-such-field already returned NULL), and it makes it safe to create expression indexes that use these operators, since they will now not throw errors for any valid JSON input.
", "text": "Corner cases in the JSON field/element/path extraction operators now return NULL rather than raising an error (Tom Lane) For example, applying field extraction to a JSON array now yields NULL not an error. This is more consistent (since some comparable cases such as no-such-field already returned NULL), and it makes it safe to create expression indexes that use these operators, since they will now not throw errors for any valid JSON input.", "title": "Corner cases in the JSON field/element/path extraction operators now return NULL rather than raising an error", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "035e324bfb1627108bf3610418d1177e965416a36c2c6f351e1f10fae442bac7", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Corner cases in the JSON field/element/path extraction operators now return NULL rather than raising an error (Tom Lane) For example, applying field extraction to a JSON array now yields NULL not an error. This is more consistent (since some comparable cases such as no-such-field already returned NULL), and it makes it safe to create expression indexes that use these operators, since they will now not throw errors for any valid JSON input.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/004", "db_id": "f84a57ba6c40990ff398ddc9e7f831f9", "patch_ids": [], "statement_hash": "0e69d26c1a4417a7f5f97bda5e5056bfe3558658fc32c2abbcd61f5ab36e5f66", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-d3d9d02d0900102a", "migration": true}, {"id": "9.4.0-0ec02d3163be012d", "cves": [], "html": "Cause consecutive whitespace in to_timestamp() and to_date() format strings to consume a corresponding number of characters in the input string (whitespace or not), then conditionally consume adjacent whitespace, if not in FX mode (Jeevan Chalke)
Previously, consecutive whitespace characters in a non-FX format string behaved like a single whitespace character and consumed all adjacent whitespace in the input string. For example, previously a format string of three spaces would consume only the first space in ' 12', but it will now consume all three characters.
", "text": "Cause consecutive whitespace in to_timestamp() and to_date() format strings to consume a corresponding number of characters in the input string (whitespace or not), then conditionally consume adjacent whitespace, if not in FX mode (Jeevan Chalke) Previously, consecutive whitespace characters in a non-FX format string behaved like a single whitespace character and consumed all adjacent whitespace in the input string. For example, previously a format string of three spaces would consume only the first space in ' 12', but it will now consume all three characters.", "title": "Cause consecutive whitespace in to_timestamp() and to_date() format strings to consume a corresponding number of characters in the input string (whitespace or not), then conditionally consume adjacent whitespace, if not in FX mode", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "e8a6886b775bfda296fa3be0e174f045a23cca64828acb92f202ac7d0fb38c7f", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Cause consecutive whitespace in to_timestamp() and to_date() format strings to consume a corresponding number of characters in the input string (whitespace or not), then conditionally consume adjacent whitespace, if not in FX mode (Jeevan Chalke) Previously, consecutive whitespace characters in a non-FX format string behaved like a single whitespace character and consumed all adjacent whitespace in the input string. For example, previously a format string of three spaces would consume only the first space in ' 12', but it will now consume all three characters.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/005", "db_id": "b7fc09c0fc7f34184cb8710bb70b3602", "patch_ids": [], "statement_hash": "bb7a04b5a5ae8f9b77ed6b16f7af5df1b71c5f17ec693917bb3af11b483d11f9", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-0ec02d3163be012d", "migration": true}, {"id": "9.4.0-4baf8070170b36dd", "cves": [], "html": "Fix ts_rank_cd() to ignore stripped lexemes (Alex Hill)
Previously, stripped lexemes were treated as if they had a default location, producing a rank of dubious usefulness.
", "text": "Fix ts_rank_cd() to ignore stripped lexemes (Alex Hill) Previously, stripped lexemes were treated as if they had a default location, producing a rank of dubious usefulness.", "title": "Fix ts_rank_cd() to ignore stripped lexemes", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "5d9fc639c50022b39c74b4a11b90c53de38f26d19904207830cfac5ef81a716b", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Fix ts_rank_cd() to ignore stripped lexemes (Alex Hill) Previously, stripped lexemes were treated as if they had a default location, producing a rank of dubious usefulness.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/006", "db_id": "a89bc1d88493323b5b71f7a5fbd6f305", "patch_ids": [], "statement_hash": "355356bbc0ee85a6577759812b944c194e5c9a047a58a54a7bf97a799ef45c13", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-4baf8070170b36dd", "migration": true}, {"id": "9.4.0-cffb18f3369bf025", "cves": [], "html": "For functions declared to take VARIADIC \"any\", an actual parameter marked as VARIADIC must be of a determinable array type (Pavel Stehule)
\nSuch parameters can no longer be written as an undecorated string literal or NULL; a cast to an appropriate array data type will now be required. Note that this does not affect parameters not marked VARIADIC.
", "text": "For functions declared to take VARIADIC \"any\", an actual parameter marked as VARIADIC must be of a determinable array type (Pavel Stehule) Such parameters can no longer be written as an undecorated string literal or NULL; a cast to an appropriate array data type will now be required. Note that this does not affect parameters not marked VARIADIC.", "title": "For functions declared to take VARIADIC \"any\", an actual parameter marked as VARIADIC must be of a determinable array type", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "daf4e376b4bef2992ac9078eef7d184082db3f224ba34cde869af4d5693676c3", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "For functions declared to take VARIADIC \"any\", an actual parameter marked as VARIADIC must be of a determinable array type (Pavel Stehule) Such parameters can no longer be written as an undecorated string literal or NULL; a cast to an appropriate array data type will now be required. Note that this does not affect parameters not marked VARIADIC.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/007", "db_id": "9decfa50be75922933d62717781ea49a", "patch_ids": [], "statement_hash": "6df0b7ef03d4c87362d79f470a2b5dba98a8ba3fed54674699c15033bcc83722", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-cffb18f3369bf025", "migration": true}, {"id": "9.4.0-f15d9309d056fa9b", "cves": [], "html": "Ensure that whole-row variables expose the expected column names to functions that pay attention to column names within composite arguments (Tom Lane)
\nConstructs like row_to_json(tab.*) now always emit column names that match the column aliases visible for table tab at the point of the call. In previous releases the emitted column names would sometimes be the table's actual column names regardless of any aliases assigned in the query.
", "text": "Ensure that whole-row variables expose the expected column names to functions that pay attention to column names within composite arguments (Tom Lane) Constructs like row_to_json(tab.*) now always emit column names that match the column aliases visible for table tab at the point of the call. In previous releases the emitted column names would sometimes be the table's actual column names regardless of any aliases assigned in the query.", "title": "Ensure that whole-row variables expose the expected column names to functions that pay attention to column names within composite arguments", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "9d7b7d9fba8d898afd43302dae2bc1a706339aae46870cf1574e6863f3e75c9e", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Ensure that whole-row variables expose the expected column names to functions that pay attention to column names within composite arguments (Tom Lane) Constructs like row_to_json(tab.*) now always emit column names that match the column aliases visible for table tab at the point of the call. In previous releases the emitted column names would sometimes be the table's actual column names regardless of any aliases assigned in the query.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/008", "db_id": "7b9174450ed524274da417d808bb21c0", "patch_ids": [], "statement_hash": "69c9d250a0f81be3948ccf7b41fdc1685aa1afe8604c64c48529de71a8151560", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-f15d9309d056fa9b", "migration": true}, {"id": "9.4.0-900b3c5c5b7a9c52", "cves": [], "html": "DISCARD now also discards sequence-related state (Fabr\u00edzio de Royes Mello, Robert Haas)
", "text": "DISCARD now also discards sequence-related state (Fabr\u00edzio de Royes Mello, Robert Haas)", "title": "DISCARD now also discards sequence-related state", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "c17009c08f738967471c5d7dc24401d0f2366137453729f36f30380ee166a176", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "sql-discard now also discards sequence-related state (Fabr\u00edzio de Royes Mello, Robert Haas)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/009", "db_id": "40d413ef563b3376e65c860f75979049", "patch_ids": [], "statement_hash": "68063a9a438a7255dd772a103dc8b0ed864b87aa9d6cb978088a057631290e17", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-900b3c5c5b7a9c52", "migration": true}, {"id": "9.4.0-7d9d160007117a91", "cves": [], "html": "Rename EXPLAIN ANALYZE's \"total runtime\" output to \"execution time\" (Tom Lane)
\nNow that planning time is also reported, the previous name was confusing.
", "text": "Rename EXPLAIN ANALYZE's \"total runtime\" output to \"execution time\" (Tom Lane) Now that planning time is also reported, the previous name was confusing.", "title": "Rename EXPLAIN ANALYZE's \"total runtime\" output to \"execution time\"", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "dc629837c8ee2b2ebe262dc47ffabe47e38f9f6f8899f737db6431027e589d8d", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Rename EXPLAIN ANALYZE's total runtime output to execution time (Tom Lane) Now that planning time is also reported, the previous name was confusing.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/010", "db_id": "3d1751975e55ba1a65beffcd538b7ce4", "patch_ids": [], "statement_hash": "1f261d6bb48070c42a0bbaa63d26e668dac58ed58b30833b16281e81c3ba1b3e", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-7d9d160007117a91", "migration": true}, {"id": "9.4.0-f789cfc0d10028ce", "cves": [], "html": "SHOW TIME ZONE now outputs simple numeric UTC offsets in POSIX timezone format (Tom Lane)
\nPreviously, such timezone settings were displayed as interval values. The new output is properly interpreted by SET TIME ZONE when passed as a simple string, whereas the old output required special treatment to be re-parsed correctly.
", "text": "SHOW TIME ZONE now outputs simple numeric UTC offsets in POSIX timezone format (Tom Lane) Previously, such timezone settings were displayed as interval values. The new output is properly interpreted by SET TIME ZONE when passed as a simple string, whereas the old output required special treatment to be re-parsed correctly.", "title": "SHOW TIME ZONE now outputs simple numeric UTC offsets in POSIX timezone format", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "89d7d2870ab0e8f708b9278543c0262b711f063b9329d61c94ae892ce11a49f8", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "SHOW TIME ZONE now outputs simple numeric UTC offsets in POSIX timezone format (Tom Lane) Previously, such timezone settings were displayed as interval values. The new output is properly interpreted by SET TIME ZONE when passed as a simple string, whereas the old output required special treatment to be re-parsed correctly.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/011", "db_id": "6be7f212bef502a3f1be15cdb7d52d90", "patch_ids": [], "statement_hash": "5610076ada38eeca7f24dde8a9dd2866c9c339ddc4bb6cef2180f2ca87a42048", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-f789cfc0d10028ce", "migration": true}, {"id": "9.4.0-8ae45abdddd21a86", "cves": [], "html": "Foreign data wrappers that support updating foreign tables must consider the possible presence of AFTER ROW triggers (Noah Misch)
\nWhen an AFTER ROW trigger is present, all columns of the table must be returned by updating actions, since the trigger might inspect any or all of them. Previously, foreign tables never had triggers, so the FDW might optimize away fetching columns not mentioned in the RETURNING clause (if any).
", "text": "Foreign data wrappers that support updating foreign tables must consider the possible presence of AFTER ROW triggers (Noah Misch) When an AFTER ROW trigger is present, all columns of the table must be returned by updating actions, since the trigger might inspect any or all of them. Previously, foreign tables never had triggers, so the FDW might optimize away fetching columns not mentioned in the RETURNING clause (if any).", "title": "Foreign data wrappers that support updating foreign tables must consider the possible presence of AFTER ROW triggers", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "5a7b370bdaa89e677922c7fbf2ef824f9fb3e501392b65559a6a269c0593246e", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Foreign data wrappers that support updating foreign tables must consider the possible presence of AFTER ROW triggers (Noah Misch) When an AFTER ROW trigger is present, all columns of the table must be returned by updating actions, since the trigger might inspect any or all of them. Previously, foreign tables never had triggers, so the FDW might optimize away fetching columns not mentioned in the RETURNING clause (if any).", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/012", "db_id": "69f1d0363b8850dd292d048f67121e0f", "patch_ids": [], "statement_hash": "cb58a49fe84dfcfb6cc12c38baf94e9802bfd0cad091dadda2b944e84d7ff1fa", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-8ae45abdddd21a86", "migration": true}, {"id": "9.4.0-c3719ef33ef1aebc", "cves": [], "html": "Prevent CHECK constraints from referencing system columns, except tableoid (Amit Kapila)
\nPreviously such check constraints were allowed, but they would often cause errors during restores.
", "text": "Prevent CHECK constraints from referencing system columns, except tableoid (Amit Kapila) Previously such check constraints were allowed, but they would often cause errors during restores.", "title": "Prevent CHECK constraints from referencing system columns, except tableoid", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "29fed6f189a72c24e85ada0cc4cd0f16b403e923cdd0eaa0a2fa81e4b20c9e6b", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Prevent CHECK constraints from referencing system columns, except tableoid (Amit Kapila) Previously such check constraints were allowed, but they would often cause errors during restores.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/013", "db_id": "a8d48fe017675fcfa19b7dd16491d900", "patch_ids": [], "statement_hash": "a8881da2f282c478313e6680a2f91fc6572ea1359c67abd1cf115cc5d8c5d513", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-c3719ef33ef1aebc", "migration": true}, {"id": "9.4.0-db346d1c3e024574", "cves": [], "html": "Use the last specified recovery target parameter if multiple target parameters are specified (Heikki Linnakangas)
\nPreviously, there was an undocumented precedence order among the recovery_target_xxx parameters.
", "text": "Use the last specified recovery target parameter if multiple target parameters are specified (Heikki Linnakangas) Previously, there was an undocumented precedence order among the recovery_target_xxx parameters.", "title": "Use the last specified recovery target parameter if multiple target parameters are specified", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "be844843a12369fb1c2618b52df22f4ccccf1b88e3a7c76f3e675e1ca6f514ef", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "Use the last specified recovery target parameter if multiple target parameters are specified (Heikki Linnakangas) Previously, there was an undocumented precedence order among the recovery_target_xxx parameters.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/014", "db_id": "2e5d7aa302315bc05e8b897097175ced", "patch_ids": [], "statement_hash": "3b4972194cf290f6d7ee06bc11d1b13bef964e3d550d66214f635c240178c10b", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-db346d1c3e024574", "migration": true}, {"id": "9.4.0-a51f6bad2d0d7c57", "cves": [], "html": "On Windows, automatically preserve quotes in command strings supplied by the user (Heikki Linnakangas)
\nUser commands that did their own quote preservation might need adjustment. This is likely to be an issue for commands used in archive_command, restore_command, and COPY TO/FROM PROGRAM.
", "text": "On Windows, automatically preserve quotes in command strings supplied by the user (Heikki Linnakangas) User commands that did their own quote preservation might need adjustment. This is likely to be an issue for commands used in archive_command, restore_command, and COPY TO/FROM PROGRAM.", "title": "On Windows, automatically preserve quotes in command strings supplied by the user", "commits": [], "section": "Compatibility", "category": "compatibility", "source_url": "/docs/release/9.4.0/#AEN123794", "source_hash": "00251af05f5b7ecfe6ce7d9fa20cef4d16f5d8084f899602d4b74aaa294e93c8", "section_path": ["Compatibility"], "commit_groups": [], "identity_text": "On Windows, automatically preserve quotes in command strings supplied by the user (Heikki Linnakangas) User commands that did their own quote preservation might need adjustment. This is likely to be an issue for commands used in guc-archive-command , restore-command , and COPY TO/FROM PROGRAM.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/migration/015", "db_id": "f7492d5286f9661bee0a916fbe4ad5a8", "patch_ids": [], "statement_hash": "9e9f60e65b444ee713581ace317453022d908038c62b0d27188a635a26ef3b86", "relations": [], "category_label": "Compatibility", "url": "/docs/compare/?release=9.4.0#9.4.0-a51f6bad2d0d7c57", "migration": true}, {"id": "9.4.0-a01eefcd32ddcd7f", "cves": [], "html": "Remove catalog column pg_class.reltoastidxid (Michael Paquier)
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\nThis feature is illustrated in the test_shm_mq module.
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\nPreviously these were reported as live rows.
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\nSuch indexes improve subnet and supernet lookups and ordering comparisons.
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", "text": "Improve SSL renegotiation handling (\u00c1lvaro Herrera)", "title": "Improve SSL renegotiation handling", "commits": [], "section": "Server / SSL", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124077", "source_hash": "7ff291274ea2c0743c98492da667129a373fdf557a0850986569426835d2cb22", "section_path": ["Server", "SSL"], "commit_groups": [], "identity_text": "Improve SSL renegotiation handling (\u00c1lvaro Herrera)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/030", "db_id": "5ca7f6281c78dcd84d46b8109020af8d", "patch_ids": [], "statement_hash": "5d081f14cf911b039417a77dee33028c6d79ccffadbbf1c0520998baaaf80218", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-15f3f0e7faf30cbc", "migration": false}, {"id": "9.4.0-89c2b4601ebdf154", "cves": [], "html": "Add new SQL command ALTER SYSTEM for changing postgresql.conf configuration file entries (Amit Kapila)
\nPreviously such settings could only be changed by manually editing postgresql.conf.
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\nThis can improve performance on large-memory systems.
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\nThis is helpful in configuring a standby server to have the required number of worker processes (the same as the primary).
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\nIn contrast to local_preload_libraries, this parameter can load any shared library, not just those in the $libdir/plugins directory.
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", "text": "Add wal_log_hints parameter to enable WAL logging of hint-bit changes (Sawada Masahiko) Hint bit changes are not normally logged, except when checksums are enabled. This is useful for external tools like pg_rewind.", "title": "Add wal_log_hints parameter to enable WAL logging of hint-bit changes", "commits": [], "section": "Server / Server Settings", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124106", "source_hash": "ca54aad36687981af8239bddac985bdc6a22790642058f70eb824c76d239cdf5", "section_path": ["Server", "Server Settings"], "commit_groups": [], "identity_text": "Add guc-wal-log-hints parameter to enable WAL logging of hint-bit changes (Sawada Masahiko) Hint bit changes are not normally logged, except when checksums are enabled. This is useful for external tools like pg_rewind.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/036", "db_id": "a1bd9396deaa83aa33410939f61d2fda", "patch_ids": [], "statement_hash": "acc3c9657644ebdf185a4f0ffa92cc51537ddc5c05b4cfc3e76b270e655add90", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-ef21d5cb1d8fbee3", "migration": false}, {"id": "9.4.0-5c7f577502244342", "cves": [], "html": "Increase the default settings of work_mem and maintenance_work_mem by four times (Bruce Momjian)
\nThe new defaults are 4MB and 64MB respectively.
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Allow terabyte units (TB) to be used when specifying configuration variable values (Simon Riggs)
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\nPreviously these messages were output in the Windows ANSI code page.
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\nReplication slots allow preservation of resources like WAL files on the primary until they are no longer needed by standby servers.
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\nDelaying replay on standby servers can be useful for recovering from user errors.
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", "text": "Fully implement the line data type (Peter Eisentraut) The line segment data type (lseg) has always been fully supported. The previous line data type (which was enabled only via a compile-time option) is not binary or dump-compatible with the new implementation.", "title": "Fully implement the line data type", "commits": [], "section": "Data Types", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124368", "source_hash": "9254a43e407b84ae0f638886c04fde301f7b55576aea2a0287da1115645e24a4", "section_path": ["Data Types"], "commit_groups": [], "identity_text": "Fully implement the line data type (Peter Eisentraut) The line segment data type (lseg) has always been fully supported. The previous line data type (which was enabled only via a compile-time option) is not binary or dump-compatible with the new implementation.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/080", "db_id": "9e9dc90134e6ad791232823d94272e6b", "patch_ids": [], "statement_hash": "fe712fe8daab22bbd350e7b79bb6a62b8c4a87a20f156141dad2695b2c1a7d05", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-e25ca381fc97b9e5", "migration": false}, {"id": "9.4.0-b8d4ff40d0ddcc1a", "cves": [], "html": "Add pg_lsn data type to represent a WAL log sequence number (LSN) (Robert Haas, Michael Paquier)
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", "text": "Allow single-point polygons to be converted to circles (Bruce Momjian)", "title": "Allow single-point polygons to be converted to circles", "commits": [], "section": "Data Types", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124368", "source_hash": "c757d7d34038f11ba75e89adf73554940437d4e49a7f0af10f78a3e41836d84f", "section_path": ["Data Types"], "commit_groups": [], "identity_text": "Allow single-point polygons to be converted to circles (Bruce Momjian)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/082", "db_id": "d61fea5ee1b6ff8df755b16c69459e05", "patch_ids": [], "statement_hash": "2fb35c8f002e764043840008316ec4fdc38b9682581ffd71f95fecdb9ac7584f", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-ad10fa8b80732bfa", "migration": false}, {"id": "9.4.0-c19063098a6a92aa", "cves": [], "html": "Support time zone abbreviations that change UTC offset from time to time (Tom Lane)
\nPreviously, PostgreSQL assumed that the UTC offset associated with a time zone abbreviation (such as EST) never changes in the usage of any particular locale. However this assumption fails in the real world, so introduce the ability for a zone abbreviation to represent a UTC offset that sometimes changes. Update the zone abbreviation definition files to make use of this feature in timezone locales that have changed the UTC offset of their abbreviations since 1970 (according to the IANA timezone database). In such timezones, PostgreSQL will now associate the correct UTC offset with the abbreviation depending on the given date.
", "text": "Support time zone abbreviations that change UTC offset from time to time (Tom Lane) Previously, PostgreSQL assumed that the UTC offset associated with a time zone abbreviation (such as EST) never changes in the usage of any particular locale. However this assumption fails in the real world, so introduce the ability for a zone abbreviation to represent a UTC offset that sometimes changes. Update the zone abbreviation definition files to make use of this feature in timezone locales that have changed the UTC offset of their abbreviations since 1970 (according to the IANA timezone database). In such timezones, PostgreSQL will now associate the correct UTC offset with the abbreviation depending on the given date.", "title": "Support time zone abbreviations that change UTC offset from time to time", "commits": [], "section": "Data Types", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124368", "source_hash": "c580fb854e262b8d63d2f5221441fa934e981569285b648e1029ac8863a4fba5", "section_path": ["Data Types"], "commit_groups": [], "identity_text": "Support time zone abbreviations that change UTC offset from time to time (Tom Lane) Previously, PostgreSQL assumed that the UTC offset associated with a time zone abbreviation (such as EST) never changes in the usage of any particular locale. However this assumption fails in the real world, so introduce the ability for a zone abbreviation to represent a UTC offset that sometimes changes. Update the zone abbreviation definition files to make use of this feature in timezone locales that have changed the UTC offset of their abbreviations since 1970 (according to the IANA timezone database). In such timezones, PostgreSQL will now associate the correct UTC offset with the abbreviation depending on the given date.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/083", "db_id": "9748c3469a93c312976363e45183b404", "patch_ids": [], "statement_hash": "a6501e3be8faaec1aef9006ff3436c99d826569caaba0e379a16ca0000209bff", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-c19063098a6a92aa", "migration": false}, {"id": "9.4.0-699b8da24d0e4c79", "cves": [], "html": "Allow 5+ digit years for non-ISO timestamp and date strings, where appropriate (Bruce Momjian)
", "text": "Allow 5+ digit years for non-ISO timestamp and date strings, where appropriate (Bruce Momjian)", "title": "Allow 5+ digit years for non-ISO timestamp and date strings, where appropriate", "commits": [], "section": "Data Types", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124368", "source_hash": "cc16475f90c5d6ab73e41927cb986a8afb0d4ef0fd5189e96340e9495ac5264f", "section_path": ["Data Types"], "commit_groups": [], "identity_text": "Allow 5+ digit years for non-ISO timestamp and date strings, where appropriate (Bruce Momjian)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/084", "db_id": "7f8bfa51bef64e75678000b0117362f4", "patch_ids": [], "statement_hash": "ddad46c60eb37d3ed3bdec9cca426543d4c0bc74c6d5fb87367e7845f5c3f579", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-699b8da24d0e4c79", "migration": false}, {"id": "9.4.0-7d332396f80fb46f", "cves": [], "html": "Add checks for overflow/underflow of interval values (Bruce Momjian)
", "text": "Add checks for overflow/underflow of interval values (Bruce Momjian)", "title": "Add checks for overflow/underflow of interval values", "commits": [], "section": "Data Types", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124368", "source_hash": "b4365baa794f1fd3d06626dacfc06ce2a71fe43df0f294c716c5a7812c51d3b5", "section_path": ["Data Types"], "commit_groups": [], "identity_text": "Add checks for overflow/underflow of interval values (Bruce Momjian)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/085", "db_id": "5768b1f3d23ee6552b64871f76a0e483", "patch_ids": [], "statement_hash": "93fbb6837692daea7c91965307573906d656e399aedf5e9e6286eaf774e25b18", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-7d332396f80fb46f", "migration": false}, {"id": "9.4.0-4b46639a81d0a214", "cves": [], "html": "Add jsonb, a more capable and efficient data type for storing JSON data (Oleg Bartunov, Teodor Sigaev, Alexander Korotkov, Peter Geoghegan, Andrew Dunstan)
\nThis new type allows faster access to values within a JSON document, and faster and more useful indexing of JSON columns. Scalar values in jsonb documents are stored as appropriate scalar SQL types, and the JSON document structure is pre-parsed rather than being stored as text as in the original json data type.
", "text": "Add jsonb, a more capable and efficient data type for storing JSON data (Oleg Bartunov, Teodor Sigaev, Alexander Korotkov, Peter Geoghegan, Andrew Dunstan) This new type allows faster access to values within a JSON document, and faster and more useful indexing of JSON columns. Scalar values in jsonb documents are stored as appropriate scalar SQL types, and the JSON document structure is pre-parsed rather than being stored as text as in the original json data type.", "title": "Add jsonb, a more capable and efficient data type for storing JSON data", "commits": [], "section": "Data Types / JSON", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124408", "source_hash": "36e84e7530cb26b93c487d6e6b560d89244d8ed6fc85861182e5dd6cde181285", "section_path": ["Data Types", "JSON"], "commit_groups": [], "identity_text": "Add jsonb, a more capable and efficient data type for storing JSON data (Oleg Bartunov, Teodor Sigaev, Alexander Korotkov, Peter Geoghegan, Andrew Dunstan) This new type allows faster access to values within a JSON document, and faster and more useful indexing of JSON columns. Scalar values in jsonb documents are stored as appropriate scalar SQL types, and the JSON document structure is pre-parsed rather than being stored as text as in the original json data type.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/086", "db_id": "c005a1586946218de524236bea2f4df3", "patch_ids": [], "statement_hash": "378a2dc1a3f3bca6bd3c7067d9e4d8415c69e0f08393c1a025ede56e19b8b85a", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-4b46639a81d0a214", "migration": false}, {"id": "9.4.0-6c215cba8300330c", "cves": [], "html": "Add new JSON functions to allow for the construction of arbitrarily complex JSON trees (Andrew Dunstan, Laurence Rowe)
\nNew functions include json_array_elements_text(), json_build_array(), json_object(), json_object_agg(), json_to_record(), and json_to_recordset().
Add json_typeof() to return the data type of a json value (Andrew Tipton)
Add pg_sleep_for(interval) and pg_sleep_until(timestamp) to specify delays more flexibly (Vik Fearing, Julien Rouhaud)
The existing pg_sleep() function only supports delays specified in seconds.
Add cardinality() function for arrays (Marko Tiikkaja)
This returns the total number of elements in the array, or zero for an array with no elements.
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", "text": "Add SQL functions to allow large object reads/writes at arbitrary offsets (Pavel Stehule)", "title": "Add SQL functions to allow large object reads/writes at arbitrary offsets", "commits": [], "section": "Functions", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124436", "source_hash": "b261dc64b4c360aef165296785bbcb778ef08055012f4ebdbbbd73cb63dc7bf7", "section_path": ["Functions"], "commit_groups": [], "identity_text": "Add SQL functions to allow large object reads/writes at arbitrary offsets (Pavel Stehule)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/091", "db_id": "726bc75348444a9e6125a40cba7178eb", "patch_ids": [], "statement_hash": "856be3c1b2ee8781fe300f9ab531d4fc32ec0a651f7482d53be30667b6b5afd6", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-5d7ff226b1f17a10", "migration": false}, {"id": "9.4.0-ecc7b32c2db96f34", "cves": [], "html": "Allow unnest() to take multiple arguments, which are individually unnested then horizontally concatenated (Andrew Gierth)
Add functions to construct times, dates, timestamps, timestamptzs, and intervals from individual values, rather than strings (Pavel Stehule)
\nThese functions' names are prefixed with make_, e.g. make_date().
Make to_char()'s TZ format specifier return a useful value for simple numeric time zone offsets (Tom Lane)
Previously, to_char(CURRENT_TIMESTAMP, 'TZ') returned an empty string if the timezone was set to a constant like -4.
", "text": "Make to_char()'s TZ format specifier return a useful value for simple numeric time zone offsets (Tom Lane) Previously, to_char(CURRENT_TIMESTAMP, 'TZ') returned an empty string if the timezone was set to a constant like -4.", "title": "Make to_char()'s TZ format specifier return a useful value for simple numeric time zone offsets", "commits": [], "section": "Functions", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124436", "source_hash": "4bba0708133968aa4a7b2609d8b98bbd146ed8fefeb980211f0799c19151a56a", "section_path": ["Functions"], "commit_groups": [], "identity_text": "Make to_char()'s TZ format specifier return a useful value for simple numeric time zone offsets (Tom Lane) Previously, to_char(CURRENT_TIMESTAMP, 'TZ') returned an empty string if the timezone was set to a constant like -4.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/094", "db_id": "3cd6a7314c12fa1fa024581b84fc491f", "patch_ids": [], "statement_hash": "8d242e7e4c06cd1528dca6fa1ab36c1ef7d2e2fce8dd5d0a8880f825300a7b16", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-d847aaf680a92708", "migration": false}, {"id": "9.4.0-08c61781110e8ed9", "cves": [], "html": "Add timezone offset format specifier OF to to_char() (Bruce Momjian)
Improve the random seed used for random() (Honza Horak)
Tighten validity checking for Unicode code points in chr(int) (Tom Lane)
This function now only accepts values that are valid UTF8 characters according to RFC 3629.
", "text": "Tighten validity checking for Unicode code points in chr(int) (Tom Lane) This function now only accepts values that are valid UTF8 characters according to RFC 3629.", "title": "Tighten validity checking for Unicode code points in chr(int)", "commits": [], "section": "Functions", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124436", "source_hash": "0dd7b4ee7b25c564e707ceef10181b3857731654bc3d96d8cf241cdb4d765787", "section_path": ["Functions"], "commit_groups": [], "identity_text": "Tighten validity checking for Unicode code points in chr(int) (Tom Lane) This function now only accepts values that are valid UTF8 characters according to RFC 3629.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/097", "db_id": "2158dcf319aa4a10e69a70073fa41b8b", "patch_ids": [], "statement_hash": "0a861a7837b92a9b576ecd7f327c390686b9d8472814be85c79f4e77c0778382", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-b431b85e3eb43e98", "migration": false}, {"id": "9.4.0-657f8fb03c14031e", "cves": [], "html": "Add functions for looking up objects in pg_class, pg_proc, pg_type, and pg_operator that do not generate errors for non-existent objects (Yugo Nagata, Nozomi Anzai, Robert Haas)
\nFor example, to_regclass() does a lookup in pg_class similarly to the regclass input function, but it returns NULL for a non-existent object instead of failing.
Add function pg_filenode_relation() to allow for more efficient lookup of relation names from filenodes (Andres Freund)
Add parameter_default column to information_schema.parameters view (Peter Eisentraut)
", "text": "Add parameter_default column to information_schema.parameters view (Peter Eisentraut)", "title": "Add parameter_default column to information_schema.parameters view", "commits": [], "section": "Functions / System Information Functions", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124493", "source_hash": "4f85410358dc5036f211033aae25f652511eb9aebe1f2ca7b2afbf7d6e7d3103", "section_path": ["Functions", "System Information Functions"], "commit_groups": [], "identity_text": "Add parameter_default column to information_schema.parameters view (Peter Eisentraut)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/100", "db_id": "e107731cc8a47517e39123f11e1b588d", "patch_ids": [], "statement_hash": "f5f28d4b8ed323040c5cd4921b17eee8407407021f71c755f3cdf6de0406f0bd", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-5f9f5c2f8a490583", "migration": false}, {"id": "9.4.0-9f9cbe21f87d5ce3", "cves": [], "html": "Make information_schema.schemata show all accessible schemas (Peter Eisentraut)
\nPreviously it only showed schemas owned by the current user.
", "text": "Make information_schema.schemata show all accessible schemas (Peter Eisentraut) Previously it only showed schemas owned by the current user.", "title": "Make information_schema.schemata show all accessible schemas", "commits": [], "section": "Functions / System Information Functions", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124493", "source_hash": "686f23b7c21ff1dd8caca72587f204a6ba98e36b87a3de585c69fceecb189a65", "section_path": ["Functions", "System Information Functions"], "commit_groups": [], "identity_text": "Make information_schema.schemata show all accessible schemas (Peter Eisentraut) Previously it only showed schemas owned by the current user.", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/101", "db_id": "a1e247eed38fa99b63b18eb8d91cb212", "patch_ids": [], "statement_hash": "db1264117e55210780b87120b4b7f63aee5eca519e6044f4f9334135e87ac7e0", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-9f9cbe21f87d5ce3", "migration": false}, {"id": "9.4.0-70b2a7680ac89a22", "cves": [], "html": "Add control over which rows are passed into aggregate functions via the FILTER clause (David Fetter)
", "text": "Add control over which rows are passed into aggregate functions via the FILTER clause (David Fetter)", "title": "Add control over which rows are passed into aggregate functions via the FILTER clause", "commits": [], "section": "Functions / Aggregates", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124521", "source_hash": "60b9327318a6520aca80ebe660e65e6abc23fe6c532ef55b691e3891891e97e5", "section_path": ["Functions", "Aggregates"], "commit_groups": [], "identity_text": "Add control over which rows are passed into aggregate functions via the FILTER clause (David Fetter)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/102", "db_id": "6177fad2f9762cc4db8d015dee61f685", "patch_ids": [], "statement_hash": "dd418aa1c2469092a39057f243180fac6e3f75750ddf857c3dc262442e6f197b", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-70b2a7680ac89a22", "migration": false}, {"id": "9.4.0-97f766672027840f", "cves": [], "html": "Support ordered-set (WITHIN GROUP) aggregates (Atri Sharma, Andrew Gierth, Tom Lane)
", "text": "Support ordered-set (WITHIN GROUP) aggregates (Atri Sharma, Andrew Gierth, Tom Lane)", "title": "Support ordered-set (WITHIN GROUP) aggregates", "commits": [], "section": "Functions / Aggregates", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124521", "source_hash": "9583c24056287c698bcc4480a9c61cef012061647a0b09a342233b2b41e3d845", "section_path": ["Functions", "Aggregates"], "commit_groups": [], "identity_text": "Support ordered-set (WITHIN GROUP) aggregates (Atri Sharma, Andrew Gierth, Tom Lane)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/103", "db_id": "dcbb81a9b1f68b4d97be83e9af660b11", "patch_ids": [], "statement_hash": "d7b18af36efee53af1759257991e07415c00ca38c342f1ead6fe4f5b6abb99d7", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-97f766672027840f", "migration": false}, {"id": "9.4.0-598af44200411c43", "cves": [], "html": "Add standard ordered-set aggregates percentile_cont(), percentile_disc(), mode(), rank(), dense_rank(), percent_rank(), and cume_dist() (Atri Sharma, Andrew Gierth)
Support VARIADIC aggregate functions (Tom Lane)
", "text": "Support VARIADIC aggregate functions (Tom Lane)", "title": "Support VARIADIC aggregate functions", "commits": [], "section": "Functions / Aggregates", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124521", "source_hash": "a9641bd6a27b6875f7cf377ab79b69507a10161bfc1b535436636028d26bc5f2", "section_path": ["Functions", "Aggregates"], "commit_groups": [], "identity_text": "Support VARIADIC aggregate functions (Tom Lane)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/105", "db_id": "a1fc4365390bf56a216e06968955c0d3", "patch_ids": [], "statement_hash": "4f4e973ded498088a5a3326eaafb6d847cc5c637fd8ad0a41eee97c28bd10dfd", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-dbe889aedb820a1c", "migration": false}, {"id": "9.4.0-9ec87575f8551f4b", "cves": [], "html": "Allow polymorphic aggregates to have non-polymorphic state data types (Tom Lane)
\nThis allows proper declaration in SQL of aggregates like the built-in aggregate array_agg().
Add event trigger support to PL/Perl and PL/Tcl (Dimitri Fontaine)
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", "text": "Show the SSL protocol version in \\conninfo (Marko Kreen)", "title": "Show the SSL protocol version in \\conninfo", "commits": [], "section": "Client Applications / psql / Backslash Commands", "category": "feature", "source_url": "/docs/release/9.4.0/#AEN124650", "source_hash": "8c3ef281649a2f384ddb9a3c0752cc54fbbd3ad016ee13b2fda62dd4e8bdee91", "section_path": ["Client Applications", "psql", "Backslash Commands"], "commit_groups": [], "identity_text": "Show the SSL protocol version in \\conninfo (Marko Kreen)", "commit_aliases": [], "source_commits": [], "source_entry_id": "9.4.0/changes/131", "db_id": "af81750948346ede35ca77a204f04047", "patch_ids": [], "statement_hash": "fb5fd2a812c7af8b86e6343b455adcfce35057d2f7cbc8799f7dbf8af72300e1", "relations": [], "category_label": "Features", "url": "/docs/compare/?release=9.4.0#9.4.0-2d4a926ff886e16e", "migration": false}, {"id": "9.4.0-c8d1748dddd5b015", "cves": [], "html": "Add tab completion for \\pset (Pavel Stehule)
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\nThis can be controlled with the pg_basebackup --max-rate parameter.
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\nThis change removes the main objection to freezing tuples as soon as possible. Code that inspects tuple flag bits will need to be modified.
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Remove SnapshotNow and HeapTupleSatisfiesNow() (Robert Haas)
All existing uses have been switched to more appropriate snapshot types. Catalog scans now use MVCC snapshots.
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Support printf() size modifier z to print size_t values (Andres Freund)
Change API of appendStringInfoVA() to better use vsnprintf() (David Rowley, Tom Lane)
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One can work around the vulnerability by setting environment variable OPENSSL_CONF to \"NUL:/openssl.cnf\" or any other name that cannot exist as a file.\n\nThe PostgreSQL project thanks Daniel Gustafsson of the curl security team for reporting this problem.", "fixed": "9.4.24", "fixed_url": "/docs/compare/?release=9.4.24", "affected": "9.4", "component": "packaging", "mentions": [], "evidence": "branch-matrix"}, {"id": "CVE-2019-10210", "title": "Windows installer writes superuser password to unprotected temporary file", "url": "https://www.postgresql.org/support/security/CVE-2019-10210/", "score": 6.7, "vector": "AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H", "description": "The EnterpriseDB Windows installer writes a password to a temporary file in its installation directory, creates initial databases, and deletes the file. 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The attack pattern and fix are similar to that for CVE-2007-2138 .\n\nWriting SECURITY DEFINER functions continues to require following the considerations noted in the documentation:\n\nhttps://www.postgresql.org/docs/current/sql-createfunction.html#SQL-CREATEFUNCTION-SECURITY\n\nThe PostgreSQL project thanks Tom Lane for reporting this problem.", "fixed": "9.4.24", "fixed_url": "/docs/compare/?release=9.4.24", "affected": "9.4", "component": "core server", "mentions": [{"build": "9.4.24", "version": "9.4.24", "title": "Require schema qualification to cast to a temporary type when using functional cast syntax", "url": "/docs/compare/?release=9.4.24#9.4.24-df1e4670d6c8f5ec"}], "evidence": "branch-matrix"}, {"id": "CVE-2019-10128", "title": "EnterpriseDB Windows installer does not clear permissive ACL entries", "url": "https://www.postgresql.org/support/security/CVE-2019-10128/", "score": 7.0, "vector": "AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "description": "Due to both the EnterpriseDB and BigSQL Windows installers not locking down the permissions of the PostgreSQL binary installation directory and the data directory, an unprivileged Windows user account and an unprivileged PostgreSQL account could cause the PostgreSQL service account to execute arbitrary code.\n\nThis vulnerability is present in all supported versions of PostgreSQL for these installers, and possibly exists in older versions. Both sets of installers have fixed the permissions for these directories for both new and existing installations. If you have installed PostgreSQL on Windows using other methods, we advise that you check that your PostgreSQL binary directories are writable only to trusted users and that your data directories are only accessible to trusted users.\n\nThe PostgreSQL project thanks Conner Jones for reporting this problem.", "fixed": "9.4.22", "fixed_url": "/docs/compare/?release=9.4.22", "affected": "9.4", "component": "packaging", "mentions": [], "evidence": "branch-matrix"}, {"id": "CVE-2019-10127", "title": "BigSQL Windows installer does not clear permissive ACL entries.", "url": "https://www.postgresql.org/support/security/CVE-2019-10127/", "score": 7.0, "vector": "AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H", "description": "Due to both the EnterpriseDB and BigSQL Windows installers not locking down the permissions of the PostgreSQL binary installation directory and the data directory, an unprivileged Windows user account and an unprivileged PostgreSQL account could cause the PostgreSQL service account to execute arbitrary code.\n\nThis vulnerability is present in all supported versions of PostgreSQL for these installers, and possibly exists in older versions. 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target large object", "url": "/docs/compare/?release=9.4.13#9.4.13-a943a5910c9b2907"}], "evidence": "branch-matrix"}, {"id": "CVE-2017-7547", "title": "pg_user_mappings view discloses passwords to users lacking server privileges", "url": "https://www.postgresql.org/support/security/CVE-2017-7547/", "score": 8.5, "vector": "AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "description": "", "fixed": "9.4.13", "fixed_url": "/docs/compare/?release=9.4.13", "affected": "9.4", "component": "core server", "mentions": [{"build": "9.4.13", "version": "9.4.13", "title": "Further restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options", "url": "/docs/compare/?release=9.4.13#9.4.13-a58d7f58ef83d6db"}, {"build": "9.4.12", "version": "9.4.12", "title": "Restrict visibility of pg_user_mappings.umoptions, to protect passwords stored as user mapping options", "url": "/docs/compare/?release=9.4.12#9.4.12-3578fe21dc58d774"}], "evidence": "branch-matrix"}, {"id": "CVE-2017-7546", "title": "empty password accepted in some authentication methods", "url": "https://www.postgresql.org/support/security/CVE-2017-7546/", "score": 8.1, "vector": "AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H", "description": "", "fixed": "9.4.13", "fixed_url": "/docs/compare/?release=9.4.13", "affected": "9.4", "component": "core server", "mentions": [{"build": "9.4.13", "version": "9.4.13", "title": "Disallow empty passwords in all password-based authentication methods", "url": "/docs/compare/?release=9.4.13#9.4.13-dd9fc2f4e5939b2d"}], "evidence": "branch-matrix"}, {"id": "CVE-2017-7486", "title": "pg_user_mappings view discloses foreign server passwords", "url": "https://www.postgresql.org/support/security/CVE-2017-7486/", "score": 8.5, "vector": "AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H", "description": "", "fixed": "9.4.12", "fixed_url": "/docs/compare/?release=9.4.12", "affected": "9.4", "component": "core server", "mentions": [{"build": "9.4.13", "version": "9.4.13", "title": 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