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A NULL value satisfies a clause such as boolcol IS NOT FALSE
Make ALTER FOREIGN TABLE SET SCHEMA move any owned sequences into the new schema (Tom Lane) §
Moving a regular table to a new schema causes any sequences owned by the table to be moved to that schema too (along with indexes and constraints). This was overlooked for foreign tables, however.
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Previously, heap pages that contain no visible tuples were not counted; but it seems more consistent to count all pages returned by the bitmap index scan.
", "text": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan (Melanie Plageman) § Previously, heap pages that contain no visible tuples were not counted; but it seems more consistent to count all pages returned by the bitmap index scan.", "title": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan", "commits": ["992189a3e"], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/13.15/#id-1.11.6.14.5", "source_hash": "4a8309d2ef400ff410be6d718dc351739eb722e34822e3e1448e865486ac59d7", "section_path": ["Changes"], "commit_groups": [["0960ae196", "1f4eb7342", "262757b73", "992189a3e", "d3d95f583", "f3e4581ac"]], "identity_text": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan (Melanie Plageman) Previously, heap pages that contain no visible tuples were not counted; but it seems more consistent to count all pages returned by the bitmap index scan.", "commit_aliases": ["0960ae196", "1f4eb7342", "262757b73", "992189a3e", "d3d95f583", "f3e4581ac"], "source_commits": ["992189a3e"], "source_entry_id": "13.15/changes/004", "db_id": "e29ae7de221052c247dd975fc7572378", "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365", "relations": [{"rule": 2, "type": "equivalent", "target": "1e131317b75bec3af2685bf463b52c95", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}}, {"rule": 2, "type": "equivalent", "target": "55b97633d2336c4182f273c534c4403c", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}}, {"rule": 2, "type": "equivalent", "target": "5d8b1aeb779ca0047404aae006b5aff8", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}}, {"rule": 2, "type": "equivalent", "target": "a6781eb095c0575e3926a5f509629f7e", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}}], "version": "13.15", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": [{"db_id": "1e131317b75bec3af2685bf463b52c95", "kind": "equivalent", "version": "16.3", "label": "16.3", "title": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}, "url": "/docs/compare/?release=16.3#16.3-f9fbf726e413d526", "source_url": "/docs/release/16.3/#RELEASE-16-3-CHANGES"}, {"db_id": "5d8b1aeb779ca0047404aae006b5aff8", "kind": "equivalent", "version": "15.7", "label": "15.7", "title": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}, "url": "/docs/compare/?release=15.7#15.7-8542c116b2fb8276", "source_url": "/docs/release/15.7/#id-1.11.6.18.5"}, {"db_id": "55b97633d2336c4182f273c534c4403c", "kind": "equivalent", "version": "14.12", "label": "14.12", "title": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}, "url": "/docs/compare/?release=14.12#14.12-9ac1a0bebef1e748", "source_url": "/docs/release/14.12/#id-1.11.6.18.5"}, {"db_id": "a6781eb095c0575e3926a5f509629f7e", "kind": "equivalent", "version": "12.19", "label": "12.19", "title": "Fix EXPLAIN's counting of heap pages accessed by a bitmap heap scan", "evidence": {"same_day": true, "patch_ids": ["38a905362c03da47f01e91aea4e43bae"], "statement_hash": "9f50326b7139da9904c367787a6e3cc510e5592a1999bd2ef9efea052016d365"}, "url": "/docs/compare/?release=12.19#12.19-3d95a4f1e9bda0ed", "source_url": "/docs/release/12.19/#id-1.11.6.9.6"}]}, {"id": "13.15-876d2219530d8093", "cves": [], "html": "Avoid deadlock during removal of orphaned temporary tables (Mikhail Zhilin) §
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", "text": "Avoid deadlock during removal of orphaned temporary tables (Mikhail Zhilin) § If the session that creates a temporary table crashes without removing the table, autovacuum will eventually try to remove the orphaned table. However, an incoming session that's been assigned the same temporary namespace will do that too. If a temporary table has a dependency (such as an owned sequence) then a deadlock could result between these two cleanup attempts.", "title": "Avoid deadlock during removal of orphaned temporary tables", "commits": ["4afc2c219"], "section": "Changes", "category": "bugfix", "source_url": "/docs/release/13.15/#id-1.11.6.14.5", "source_hash": "f3ffeab6c0082e9226ccebe7445fe27c391ef1d2ea9e1da274ad697e105a51e9", "section_path": ["Changes"], "commit_groups": [["4afc2c219", "4fb56a734", "6faca9ae2", "ca392df8d", "cbfbb14bd", "f5d9212e5"]], "identity_text": "Avoid deadlock during removal of orphaned temporary tables (Mikhail Zhilin) If the session that creates a temporary table crashes without removing the table, autovacuum will eventually try to remove the orphaned table. However, an incoming session that's been assigned the same temporary namespace will do that too. If a temporary table has a dependency (such as an owned sequence) then a deadlock could result between these two cleanup attempts.", "commit_aliases": ["4afc2c219", "4fb56a734", "6faca9ae2", "ca392df8d", "cbfbb14bd", "f5d9212e5"], "source_commits": ["4afc2c219"], "source_entry_id": "13.15/changes/005", "db_id": "10db092e696e45f9d81a413968b84f80", "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a", "relations": [{"rule": 2, "type": "equivalent", "target": "964b5974ae34a252057bb68172077f3b", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}}, {"rule": 2, "type": "equivalent", "target": "a0720dc32a33a298317c6bc4c4d54695", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}}, {"rule": 2, "type": "equivalent", "target": "a51b29547fb0a3c6e4c7e03971f30b2a", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}}, {"rule": 2, "type": "equivalent", "target": "fe708a1ceaa35d707899a2b3639c12ba", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}}], "version": "13.15", "category_label": "Bug fixes", "also_in": [], "variants": [], "related_changes": [{"db_id": "a51b29547fb0a3c6e4c7e03971f30b2a", "kind": "equivalent", "version": "16.3", "label": "16.3", "title": "Avoid deadlock during removal of orphaned temporary tables", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}, "url": "/docs/compare/?release=16.3#16.3-5468b62e569aaa42", "source_url": "/docs/release/16.3/#RELEASE-16-3-CHANGES"}, {"db_id": "fe708a1ceaa35d707899a2b3639c12ba", "kind": "equivalent", "version": "15.7", "label": "15.7", "title": "Avoid deadlock during removal of orphaned temporary tables", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}, "url": "/docs/compare/?release=15.7#15.7-178852343a784d35", "source_url": "/docs/release/15.7/#id-1.11.6.18.5"}, {"db_id": "a0720dc32a33a298317c6bc4c4d54695", "kind": "equivalent", "version": "14.12", "label": "14.12", "title": "Avoid deadlock during removal of orphaned temporary tables", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}, "url": "/docs/compare/?release=14.12#14.12-dd3d8b7400eb4629", "source_url": "/docs/release/14.12/#id-1.11.6.18.5"}, {"db_id": "964b5974ae34a252057bb68172077f3b", "kind": "equivalent", "version": "12.19", "label": "12.19", "title": "Avoid deadlock during removal of orphaned temporary tables", "evidence": {"same_day": true, "patch_ids": ["a00e878de69d1a19e6ef6073a2362fe6"], "statement_hash": "8fee6f24f6ad4d6a6d08d47e40f856fee7c359c0de64a4bc774737c7cbdb024a"}, "url": "/docs/compare/?release=12.19#12.19-df96b0e59c03c393", "source_url": "/docs/release/12.19/#id-1.11.6.9.6"}]}, {"id": "13.15-6f84d98eb4c86235", "cves": [], "html": "Avoid race condition while examining per-relation frozen-XID values (Noah Misch) §
\nVACUUM's computation of per-database frozen-XID values from per-relation values could get confused by a concurrent update of those values by another VACUUM.
Disallow converting a table to a view within an outer SQL command that is using that table (Tom Lane) §
\nThis avoids possible crashes.
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Avoid unnecessary use of moving-aggregate mode with a non-moving window frame (Vallimaharajan G) §
\nWhen a plain aggregate is used as a window function, and the window frame start is specified as UNBOUNDED PRECEDING, the frame's head cannot move so we do not need to use the special (and more expensive) moving-aggregate mode. This optimization was intended all along, but due to a coding error it never triggered.
Avoid use of already-freed data while planning partition-wise joins under GEQO (Tom Lane) §
\nThis would typically end in a crash or unexpected error message.
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Be more careful with RECORD-returning functions in FROM (Tom Lane) § §
The output columns of such a function call must be defined by an AS clause that specifies the column names and data types. If the actual function output value doesn't match that, an error is supposed to be thrown at runtime. However, some code paths would examine the actual value prematurely, and potentially issue strange errors or suffer assertion failures if it doesn't match expectations.
Fix confusion about the return rowtype of SQL-language procedures (Tom Lane) §
\nA procedure implemented in SQL language that returns a single composite-type column would cause an assertion failure or core dump.
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Some cases that should cause an out-of-range error produced an incorrect result instead.
", "text": "Detect integer overflow when adding or subtracting an interval to/from a timestamp (Joseph Koshakow) § Some cases that should cause an out-of-range error produced an incorrect result instead.", "title": "Detect integer overflow when adding or subtracting an interval to/from a timestamp", "commits": ["440b6251b"], "section": "Changes", "category": "improvement", "source_url": "/docs/release/13.15/#id-1.11.6.14.5", "source_hash": "c663b459fceafe91f29e2a5628df6fc8155c67909914424839479b66e491eb28", "section_path": ["Changes"], "commit_groups": [["1748379b6", "3752e3d21", "4019285c0", "440b6251b", "cb0ccefa0", "e6e3ee5b7"]], "identity_text": "Detect integer overflow when adding or subtracting an interval to/from a timestamp (Joseph Koshakow) Some cases that should cause an out-of-range error produced an incorrect result instead.", "commit_aliases": ["1748379b6", "3752e3d21", "4019285c0", "440b6251b", "cb0ccefa0", "e6e3ee5b7"], "source_commits": ["440b6251b"], "source_entry_id": "13.15/changes/015", "db_id": "df6178817f19dc48b3fed6a672e63792", "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee", "relations": [{"rule": 2, "type": "equivalent", "target": "26d4e765990af2b0549001fc5924723e", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}}, {"rule": 2, "type": "equivalent", "target": "527ac794f555a35f8c1d925520112bf4", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}}, {"rule": 2, "type": "equivalent", "target": "5c05f2d00e0cb5b2f0c779fe379c11a9", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}}, {"rule": 2, "type": "equivalent", "target": "7b4a352125e2617a9dd0d345502056d6", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}}], "version": "13.15", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": [{"db_id": "527ac794f555a35f8c1d925520112bf4", "kind": "equivalent", "version": "16.3", "label": "16.3", "title": "Detect integer overflow when adding or subtracting an interval to/from a timestamp", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}, "url": "/docs/compare/?release=16.3#16.3-ec96482addb1d831", "source_url": "/docs/release/16.3/#RELEASE-16-3-CHANGES"}, {"db_id": "26d4e765990af2b0549001fc5924723e", "kind": "equivalent", "version": "15.7", "label": "15.7", "title": "Detect integer overflow when adding or subtracting an interval to/from a timestamp", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}, "url": "/docs/compare/?release=15.7#15.7-1193db30b90424d3", "source_url": "/docs/release/15.7/#id-1.11.6.18.5"}, {"db_id": "7b4a352125e2617a9dd0d345502056d6", "kind": "equivalent", "version": "14.12", "label": "14.12", "title": "Detect integer overflow when adding or subtracting an interval to/from a timestamp", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}, "url": "/docs/compare/?release=14.12#14.12-d2187459b6f8f1ef", "source_url": "/docs/release/14.12/#id-1.11.6.18.5"}, {"db_id": "5c05f2d00e0cb5b2f0c779fe379c11a9", "kind": "equivalent", "version": "12.19", "label": "12.19", "title": "Detect integer overflow when adding or subtracting an interval to/from a timestamp", "evidence": {"same_day": true, "patch_ids": ["7933aeb736fe753bd78b4df3214cbbf8"], "statement_hash": "7e0dc135eef539553b5ee59e6a9c5a0f5f16bdda59a35071fe4132af8cdbd5ee"}, "url": "/docs/compare/?release=12.19#12.19-2aa330b6a50fb99e", "source_url": "/docs/release/12.19/#id-1.11.6.9.6"}]}, {"id": "13.15-9333974e583b3430", "cves": [], "html": "Avoid race condition in pg_get_expr() (Tom Lane) §
If the relation referenced by the argument is dropped concurrently, the function's intention is to return NULL, but sometimes it failed instead.
", "text": "Avoid race condition in pg_get_expr() (Tom Lane) § If the relation referenced by the argument is dropped concurrently, the function's intention is to return NULL, but sometimes it failed instead.", "title": "Avoid race condition in pg_get_expr()", "commits": ["ceb224b62"], "section": "Changes", "category": "improvement", "source_url": "/docs/release/13.15/#id-1.11.6.14.5", "source_hash": "7822dac31ef7afc36ca9ab96da679687e69d4ab36f1dcd19ecd09e3d73ecd112", "section_path": ["Changes"], "commit_groups": [["26c89d105", "4eb261165", "ce571434a", "ceb224b62", "d21690edb", "f38903d1e"]], "identity_text": "Avoid race condition in pg_get_expr() (Tom Lane) If the relation referenced by the argument is dropped concurrently, the function's intention is to return NULL, but sometimes it failed instead.", "commit_aliases": ["26c89d105", "4eb261165", "ce571434a", "ceb224b62", "d21690edb", "f38903d1e"], "source_commits": ["ceb224b62"], "source_entry_id": "13.15/changes/016", "db_id": "1d7446d118275bf962c1aa3c48308a97", "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093", "relations": [{"rule": 2, "type": "equivalent", "target": "01829a0cebff87a2b9877a415f955076", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}}, {"rule": 2, "type": "equivalent", "target": "29630007fa96642d778f6eafaab40d43", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}}, {"rule": 2, "type": "equivalent", "target": "b47222c52e1a95cbfda045c2adf1e9d6", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}}, {"rule": 2, "type": "equivalent", "target": "b57f7c4322343dc2c18818a94bb79ae4", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}}], "version": "13.15", "category_label": "Improvements", "also_in": [], "variants": [], "related_changes": [{"db_id": "b57f7c4322343dc2c18818a94bb79ae4", "kind": "equivalent", "version": "16.3", "label": "16.3", "title": "Avoid race condition in pg_get_expr()", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}, "url": "/docs/compare/?release=16.3#16.3-3a03ba9e5ef84abb", "source_url": "/docs/release/16.3/#RELEASE-16-3-CHANGES"}, {"db_id": "b47222c52e1a95cbfda045c2adf1e9d6", "kind": "equivalent", "version": "15.7", "label": "15.7", "title": "Avoid race condition in pg_get_expr()", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}, "url": "/docs/compare/?release=15.7#15.7-b8d97a20f9d1514a", "source_url": "/docs/release/15.7/#id-1.11.6.18.5"}, {"db_id": "29630007fa96642d778f6eafaab40d43", "kind": "equivalent", "version": "14.12", "label": "14.12", "title": "Avoid race condition in pg_get_expr()", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}, "url": "/docs/compare/?release=14.12#14.12-3c0a35e3885a4a42", "source_url": "/docs/release/14.12/#id-1.11.6.18.5"}, {"db_id": "01829a0cebff87a2b9877a415f955076", "kind": "equivalent", "version": "12.19", "label": "12.19", "title": "Avoid race condition in pg_get_expr()", "evidence": {"same_day": true, "patch_ids": ["e448e265d1ee703598d5a55fc9b219ca"], "statement_hash": "cacb210a1f757b7b8d7c71a88575c7fd4838c1e2cc115a02f6d5f1292030c093"}, "url": "/docs/compare/?release=12.19#12.19-66e4399a5efbde4f", "source_url": "/docs/release/12.19/#id-1.11.6.9.6"}]}, {"id": "13.15-d5bbda003d57f1df", "cves": [], "html": "Fix detection of old transaction IDs in XID status functions (Karina Litskevich) §
\nTransaction IDs more than 231 transactions in the past could be misidentified as recent, leading to misbehavior of pg_xact_status() or txid_status().
Fix file descriptor leakage when an error is thrown while waiting in WaitEventSetWait (Etsuro Fujita) §
Throw an error if an index is accessed while it is being reindexed (Tom Lane) §
\nPreviously this was just an assertion check, but promote it into a regular runtime error. This will provide a more on-point error message when reindexing a user-defined index expression that attempts to access its own table.
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The value physically stored in the index is truncated, and previously a pointer to that value was returned to callers. This provoked complaints when testing under valgrind. In theory it could result in crashes, though none have been reported.
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Fix PL/pgSQL's parsing of single-line comments (---style comments) following expressions (Erik Wienhold, Tom Lane) §
This mistake caused parse errors if such a comment followed a WHEN expression in a PL/pgSQL CASE statement.
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A variable-length datum in a heap tuple or index tuple could have either a short or a long header, depending on compression parameters that applied when it was made. Treat these cases as equivalent rather than complaining if there's a difference.
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Make contrib/postgres_fdw set the remote session's time zone to GMT not UTC (Tom Lane) §
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In contrib/xml2, avoid use of library functions that have been deprecated in recent versions of libxml2 (Dmitry Koval) §
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