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By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. 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By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. 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If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\dO[S+] [ <a class=\"link\" href=\"/docs/14/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span></dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."}, "comparison_hash": "1adcb7b4fd500797a318acc803eb93ef45bb2246ead6eb27ea47a319855052fa"}, "15": {"facts": [{"label": "Client", "value": "psql 15.19"}, {"label": "Case-sensitive spelling", "value": "\\dO"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-64-4f/?v=15", "text": "\\dO"}, "modifiers": "S+"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\dO", "related": [{"url": "/wiki/tool/psql/?v=15", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v15.19/postgresql-15.19.tar.bz2", "label": "15.19", "major": "15", "channel": "stable", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/15/postgresql-15-A4.pdf", "bytes": 14609140, "pages": 2987, "sha256": "66228564a4d16efb47d6a914085716ecfe22ca1566db56bc7c3d82f790646d72", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/15/postgresql-15-US.pdf", "bytes": 14495690, "pages": 3153, "sha256": "645a498c2390d47a6223ec74770631185807a19c484edb0fc5a295d9f460bc02", "built_at": "2026-09-26"}}, "tree": "15", "index": "index.html", "major": "15", "pages": 1168, "release": "15.19", "source_url": "https://ftp.postgresql.org/pub/source/v15.19/postgresql-15.19.tar.bz2", "svg_assets": 3, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "revision": "6af958c6520151fc7697d56e0616b03fb00522c4568158674d452ae0644ba545", "evidence_kind": "English manual and source declarations", "source_sha256": "e1a64a87a46b825b88c082e4518161a47aab53c45694964f8ba1df28f7859f89"}, "sources": [{"url": "/docs/15/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "15.19 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "cb07228edb4914a53530afca316fd700a250cc062af2d5a74d24add93afbd0c8"}], "sections": [], "modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "description": ["Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\dO[S+] [ <a class=\"link\" href=\"/docs/15/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span></dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."}, "comparison_hash": "1adcb7b4fd500797a318acc803eb93ef45bb2246ead6eb27ea47a319855052fa"}, "16": {"facts": [{"label": "Client", "value": "psql 16.15"}, {"label": "Case-sensitive spelling", "value": "\\dO"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-64-4f/?v=16", "text": "\\dO"}, "modifiers": "S+"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\dO", "related": [{"url": "/wiki/tool/psql/?v=16", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v16.15/postgresql-16.15.tar.bz2", "label": "16.15", "major": "16", "channel": "stable", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/16/postgresql-16-A4.pdf", "bytes": 15282337, "pages": 3055, "sha256": "4bb6c1f63deedac98736d8c4c7bc0fad0ac24e85b07e21ee10411872f06afd06", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/16/postgresql-16-US.pdf", "bytes": 15164148, "pages": 3220, "sha256": "5b6b6166c89991199e144bb0ae34c17a5f29826251dbf19db1abc0df3a3e771b", "built_at": "2026-09-26"}}, "tree": "16", "index": "index.html", "major": "16", "pages": 1169, "release": "16.15", "source_url": "https://ftp.postgresql.org/pub/source/v16.15/postgresql-16.15.tar.bz2", "svg_assets": 3, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "revision": "3c21e58b35318021716440e67bb8bafd392b6a2b965a244d90e9e33c99e0bdef", "evidence_kind": "English manual and source declarations", "source_sha256": "c1575341fa7bd40f5274ea465b34390f4dc64cdd0770af327005caaeb9f6b7ed"}, "sources": [{"url": "/docs/16/app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "file": "app-psql.html", "label": "16.15 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-DO-UC", "sha256": "add25957a1dfc97db721f2958782be186ab90dc0f0a47c4b720b2b6c26172493"}], "sections": [], "modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "description": ["Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-DO-UC\"><span class=\"term\"><code class=\"literal\">\\dO[S+] [ <a class=\"link\" href=\"/docs/16/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span> </dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."}, "comparison_hash": "1adcb7b4fd500797a318acc803eb93ef45bb2246ead6eb27ea47a319855052fa"}, "17": {"facts": [{"label": "Client", "value": "psql 17.11"}, {"label": "Case-sensitive spelling", "value": "\\dO"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-64-4f/?v=17", "text": "\\dO"}, "modifiers": "S+"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\dO", "related": [{"url": "/wiki/tool/psql/?v=17", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v17.11/postgresql-17.11.tar.bz2", "label": "17.11", "major": "17", "channel": "stable", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/17/postgresql-17-A4.pdf", "bytes": 15521293, "pages": 3099, "sha256": "1991354df0dc89e70ec39328c28988ef8b19c6a93671dab3893650b63e9f4e36", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/17/postgresql-17-US.pdf", "bytes": 15398150, "pages": 3270, "sha256": "07696c8f38abf31babf22d2db337093936e7c472d2af36d050b000c49bbcf52c", "built_at": "2026-09-26"}}, "tree": "17", "index": "index.html", "major": "17", "pages": 1143, "release": "17.11", "source_url": "https://ftp.postgresql.org/pub/source/v17.11/postgresql-17.11.tar.bz2", "svg_assets": 3, "source_mode": "en SGML built with pinned official archive", "source_sha256": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "revision": "58419c9b0dd42cb34c8d53695bb025a7e582edf55ccd4c5bcb1c2c7c71a37487", "evidence_kind": "English manual and source declarations", "source_sha256": "dd27f2b3c59e73ed14aa3324901242bf69a032a6347805f274e6260322d42979"}, "sources": [{"url": "/docs/17/app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "file": "app-psql.html", "label": "17.11 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-DO-UC", "sha256": "04c77661f1c96a64e91a27313542c34aff0c7d2a94e350ed98c6f9f35700629b"}], "sections": [], "modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "description": ["Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-DO-UC\"><span class=\"term\"><code class=\"literal\">\\dO[S+] [ <a class=\"link\" href=\"/docs/17/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span> </dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "S+"}], "signature": "\\dO[S+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."}, "comparison_hash": "1adcb7b4fd500797a318acc803eb93ef45bb2246ead6eb27ea47a319855052fa"}, "18": {"facts": [{"label": "Client", "value": "psql 18.6"}, {"label": "Case-sensitive spelling", "value": "\\dO"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-64-4f/?v=18", "text": "\\dO"}, "modifiers": "Sx+"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\dO", "related": [{"url": "/wiki/tool/psql/?v=18", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "label": "18.6", "major": "18", "channel": "stable", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/18/postgresql-18-A4.pdf", "bytes": 15865106, "pages": 3154, "sha256": "19512c405da53f9f7fcf0abba359223aa65f021be025bf3411381918f92e3190", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/18/postgresql-18-US.pdf", "bytes": 15748059, "pages": 3328, "sha256": "facbe6c229e598b872d3d98bef53308f46e06746006fa4590de9a7de9dd46319", "built_at": "2026-09-26"}}, "tree": "18", "index": "index.html", "major": "18", "pages": 1148, "release": "18.6", "source_url": "https://ftp.postgresql.org/pub/source/v18.6/postgresql-18.6.tar.bz2", "svg_assets": 3, "source_mode": "en SGML built with pinned official archive", "source_sha256": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "revision": "ee8d1a3612338fd9adf250730cb640fcc5233b5491337cc00a316a44e3a0b9f8", "evidence_kind": "English manual and source declarations", "source_sha256": "555610c24d53e4316da5b7d3fc25c279d96856d5e0e23ee308c328c5fa881d9f"}, "sources": [{"url": "/docs/18/app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "file": "app-psql.html", "label": "18.6 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-DO-UC", "sha256": "fa2a1d39294b8854318e82e93f71272c645ed88150ecc2786c28902c3f32782c"}], "sections": [], "modifiers": [{"command": "\\dO", "modifiers": "Sx+"}], "signature": "\\dO[Sx+] [ pattern ]", "spellings": ["\\dO"], "description": ["Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-DO-UC\"><span class=\"term\"><code class=\"literal\">\\dO[Sx+] [ <a class=\"link\" href=\"/docs/18/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span> </dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">x</code> is appended to the command name, the results are displayed in expanded mode. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "Sx+"}], "signature": "\\dO[Sx+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."}, "comparison_hash": "7ffee9384db69fa704dfc81f86e9d4367d1b22c4ec0fdf9c1f947556144ee766"}, "19": {"facts": [{"label": "Client", "value": "psql 19beta4"}, {"label": "Case-sensitive spelling", "value": "\\dO"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-64-4f/?v=19", "text": "\\dO"}, "modifiers": "Sx+"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\dO", "related": [{"url": "/wiki/tool/psql/?v=19", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v19beta4/postgresql-19beta4.tar.bz2", "label": "19beta4", "major": "19", "channel": "preview", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/19/postgresql-19-A4.pdf", "bytes": 16064841, "pages": 3052, "sha256": "4dd099e4125c591128fc5f3ebd02178dc24781f9e5ae629f96d67c4c8547427b", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/19/postgresql-19-US.pdf", "bytes": 15974616, "pages": 3225, "sha256": "61971fa857f0956d47341a0388fa6af9ae10acf691d4b2fc009007d384b0342b", "built_at": "2026-09-26"}}, "tree": "19", "index": "index.html", "major": "19", "pages": 1155, "release": "19beta4", "source_url": "https://ftp.postgresql.org/pub/source/v19beta4/postgresql-19beta4.tar.bz2", "svg_assets": 5, "source_mode": "en SGML built with pinned official archive", "source_sha256": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}, "revision": "1bbbbf4133d426f0e4304010688d2984c30fb67df0cc3a61b3e37eb3f6f37833", "evidence_kind": "English manual and source declarations", "source_sha256": "83157ee9c599d03b2f7a3d73ef3a56ec24e0e79cc2b3501a64d1364f56398c86"}, "sources": [{"url": "/docs/19/app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "file": "app-psql.html", "label": "19beta4 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-DO-UC", "sha256": "312975c12d6e4d62aeebcb5e98e7ca795c6d07ecb743b4bc64403dc42bc2a6e9"}], "sections": [], "modifiers": [{"command": "\\dO", "modifiers": "Sx+"}], "signature": "\\dO[Sx+] [ pattern ]", "spellings": ["\\dO"], "description": ["Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. If x is appended to the command name, the results are displayed in expanded mode. If + is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-DO-UC\"><span class=\"term\"><code class=\"literal\">\\dO[Sx+] [ <a class=\"link\" href=\"/docs/19/app-psql.html#APP-PSQL-PATTERNS\" title=\"Patterns\"><em class=\"replaceable\"><code>pattern</code></em></a> ]</code></span> </dt><dd>\n<p>Lists collations. If <em class=\"replaceable\"><code>pattern</code></em> is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the <code class=\"literal\">S</code> modifier to include system objects. If <code class=\"literal\">x</code> is appended to the command name, the results are displayed in expanded mode. If <code class=\"literal\">+</code> is appended to the command name, each collation is listed with its associated description, if any. Note that only collations usable with the current database's encoding are shown, so the results may vary in different databases of the same installation.</p>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-DO-UC", "comparison_data": {"modifiers": [{"command": "\\dO", "modifiers": "Sx+"}], "signature": "\\dO[Sx+] [ pattern ]", "spellings": ["\\dO"], "definition": "Lists collations. If pattern is specified, only collations whose names match the pattern are listed. By default, only user-created objects are shown; supply a pattern or the S modifier to include system objects. 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