{"kind": "psql", "major": "18", "item": {"slug": "cmd-68", "name": "\\h", "name_zh": "", "category": "Scripting and assistance", "summary": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. 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If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. 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If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "12": {"facts": [{"label": "Client", "value": "psql 12.22"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=12", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=12", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=12", "label": "\\help"}, {"url": "/wiki/tool/psql/?v=12", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "label": "12.22", "major": "12", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/12/postgresql-12-A4.pdf", "bytes": 13424351, "pages": 2803, "sha256": "7422cf53fd1939e7a3d2925231a88b0330e468afa5393627cac0ff86158a0621", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/12/postgresql-12-US.pdf", "bytes": 13322565, "pages": 2958, "sha256": "51f3b04e72907fc38512685946223452ea65f84419c60c66241dfa3396035e77", "built_at": "2026-09-26"}}, "tree": "12", "index": "index.html", "major": "12", "pages": 1131, "release": "12.22", "source_url": "https://ftp.postgresql.org/pub/source/v12.22/postgresql-12.22.tar.bz2", "svg_assets": 2, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "revision": "7a827e97cbfacd7febff75f34443e2043e40723de5b6d8c9d81a9430b65a37e4", "evidence_kind": "English manual and source declarations", "source_sha256": "8df3c0474782589d3c6f374b5133b1bd14d168086edbc13c6e72e67dd4527a3b"}, "sources": [{"url": "/docs/12/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "12.22 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "a5cec5a456a98610e98d1f1959d96ce57c8413bb392f0f5d6720fc561bb63627"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "13": {"facts": [{"label": "Client", "value": "psql 13.23"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=13", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=13", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=13", "label": "\\help"}, {"url": "/wiki/tool/psql/?v=13", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "label": "13.23", "major": "13", "channel": "historical", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/13/postgresql-13-A4.pdf", "bytes": 13843239, "pages": 2826, "sha256": "171cc09f90936dbc1cbd503a98ff07ae72ea58ab9771ff051313f1217737799c", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/13/postgresql-13-US.pdf", "bytes": 13739572, "pages": 2984, "sha256": "48d09c6e197d9db4220f41afe83efe848a8661b1b168d3b89419751ecaf6c24d", "built_at": "2026-09-26"}}, "tree": "13", "index": "index.html", "major": "13", "pages": 1139, "release": "13.23", "source_url": "https://ftp.postgresql.org/pub/source/v13.23/postgresql-13.23.tar.bz2", "svg_assets": 3, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "revision": "614ee3133270254e476c118cdf6f72af78d4e4b8bbd9b28ed9ab1e14e4e9c0f6", "evidence_kind": "English manual and source declarations", "source_sha256": "6ec3c82726af92b7dec873fa1cdf881eca92a4219787dfad05acb6b10e041fd6"}, "sources": [{"url": "/docs/13/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "13.23 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "30347083b7a58da020d968643e2479d2dfb534191d4493d454603ca53db151b0"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "14": {"facts": [{"label": "Client", "value": "psql 14.24"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=14", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=14", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=14", "label": "\\help"}, {"url": "/wiki/tool/psql/?v=14", "label": "psql command-line options and complete manual"}], "release": {"ref": "https://ftp.postgresql.org/pub/source/v14.24/postgresql-14.24.tar.bz2", "label": "14.24", "major": "14", "channel": "stable", "manifest": {"pdf": {"A4": {"url": "/files/documentation/pdf/14/postgresql-14-A4.pdf", "bytes": 14354704, "pages": 2944, "sha256": "8bc6b9dd7b246888bb77f0a5e8c39a2eae52e9926569832669c7d1600becb27c", "built_at": "2026-09-26"}, "US": {"url": "/files/documentation/pdf/14/postgresql-14-US.pdf", "bytes": 14242178, "pages": 3102, "sha256": "b7ecb5a5f62d8b9f73a69e25a7d26ba285373bc53168a553bff7b77955506db4", "built_at": "2026-09-26"}}, "tree": "14", "index": "index.html", "major": "14", "pages": 1158, "release": "14.24", "source_url": "https://ftp.postgresql.org/pub/source/v14.24/postgresql-14.24.tar.bz2", "svg_assets": 3, "source_mode": "en HTML verified against the pinned official archive", "source_sha256": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "revision": "588700d46356d8837c77c7c0a4e71e645fe6535983b8f1830aa8f2e4e41c40ae", "evidence_kind": "English manual and source declarations", "source_sha256": "a7fa7ed3d558172355f51406097a7bd4f6b473be80f311ef7cda96bf383d8897"}, "sources": [{"url": "/docs/14/app-psql.html#APP-PSQL-META-COMMANDS", "file": "app-psql.html", "label": "14.24 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMANDS", "sha256": "8da20abaee171c53c05658cfb2580dea645070f40bad6b46a845d710ad74c3ae"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "15": {"facts": [{"label": "Client", "value": "psql 15.19"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=15", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=15", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=15", "label": "\\help"}, {"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": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span></dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMANDS", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "16": {"facts": [{"label": "Client", "value": "psql 16.15"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=16", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=16", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=16", "label": "\\help"}, {"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-HELP", "file": "app-psql.html", "label": "16.15 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "add25957a1dfc97db721f2958782be186ab90dc0f0a47c4b720b2b6c26172493"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\"><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "17": {"facts": [{"label": "Client", "value": "psql 17.11"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=17", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=17", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=17", "label": "\\help"}, {"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-HELP", "file": "app-psql.html", "label": "17.11 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "04c77661f1c96a64e91a27313542c34aff0c7d2a94e350ed98c6f9f35700629b"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\"><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "18": {"facts": [{"label": "Client", "value": "psql 18.6"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=18", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=18", "label": "\\help"}, {"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-HELP", "file": "app-psql.html", "label": "18.6 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "fa2a1d39294b8854318e82e93f71272c645ed88150ecc2786c28902c3f32782c"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\"><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type \\help alter table ."}, "comparison_hash": "b577574b2085fe90e006df02a39f4541a330b0431267a9fe13837edb82fa8cd5"}, "19": {"facts": [{"label": "Client", "value": "psql 19beta4"}, {"label": "Case-sensitive spelling", "value": "\\h"}], "tables": [{"key": "spellings", "rows": [{"command": {"url": "/wiki/psql/cmd-68/?v=19", "text": "\\h"}, "modifiers": "None listed in this signature"}, {"command": {"url": "/wiki/psql/cmd-68-65-6c-70/?v=19", "text": "\\help"}, "modifiers": "None listed in this signature"}], "title": "Spellings in this manual definition", "columns": [{"key": "command", "label": "Command"}, {"key": "modifiers", "label": "Documented suffix modifiers"}]}], "command": "\\h", "related": [{"url": "/wiki/psql/cmd-68-65-6c-70/?v=19", "label": "\\help"}, {"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-HELP", "file": "app-psql.html", "label": "19beta4 English manual \u00b7 app-psql.html", "anchor": "APP-PSQL-META-COMMAND-HELP", "sha256": "312975c12d6e4d62aeebcb5e98e7ca795c6d07ecb743b4bc64403dc42bc2a6e9"}], "sections": [], "modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "description": ["Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\"><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown. Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of \\help , and neither variable interpolation nor backquote expansion are performed in the arguments. Note To simplify typing, commands that consists of several words do not have to be quoted. 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If command is not specified, then psql will list all the commands for which syntax help is available. If command is an asterisk ( * ), then syntax help on all SQL commands is shown."], "manual_html": "<div><dl class=\"variablelist\"><dt id=\"APP-PSQL-META-COMMAND-HELP\"><span class=\"term\"><code class=\"literal\">\\h</code> or <code class=\"literal\">\\help</code> <code class=\"literal\">[ <em class=\"replaceable\"><code>command</code></em> ]</code></span> </dt><dd>\n<p>Gives syntax help on the specified SQL command. If <em class=\"replaceable\"><code>command</code></em> is not specified, then <span class=\"application\">psql</span> will list all the commands for which syntax help is available. If <em class=\"replaceable\"><code>command</code></em> is an asterisk (<code class=\"literal\">*</code>), then syntax help on all SQL commands is shown.</p>\n<p>Unlike most other meta-commands, the entire remainder of the line is always taken to be the argument(s) of <code class=\"command\">\\help</code>, and neither variable interpolation nor backquote expansion are performed in the arguments.</p>\n<div class=\"note\">\n<h3 class=\"title\">Note</h3>\n<p>To simplify typing, commands that consists of several words do not have to be quoted. Thus it is fine to type <strong class=\"userinput\"><code>\\help alter table</code></strong>.</p>\n</div>\n</dd></dl></div>", "manual_path": "app-psql.html#APP-PSQL-META-COMMAND-HELP", "comparison_data": {"modifiers": [], "signature": "\\h or \\help [ command ]", "spellings": ["\\h", "\\help"], "definition": "Gives syntax help on the specified SQL command. 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