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author | Tom Lane <tgl@sss.pgh.pa.us> | 2020-11-06 16:17:56 -0500 |
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committer | Tom Lane <tgl@sss.pgh.pa.us> | 2020-11-06 16:17:56 -0500 |
commit | eeda7f6338095701cfe1ba3da37070508efe019e (patch) | |
tree | dd4b0d7fa52b8edd88a94ce717456cba291741b3 /doc/src | |
parent | d3adaabaf7d555ec8bb1d83c43f72e79f1bf0b7d (diff) | |
download | postgresql-eeda7f6338095701cfe1ba3da37070508efe019e.tar.gz postgresql-eeda7f6338095701cfe1ba3da37070508efe019e.zip |
Revert "Accept relations of any kind in LOCK TABLE".
Revert 59ab4ac32, as well as the followup fix 33862cb9c, in all
branches. We need to think a bit harder about what the behavior
of LOCK TABLE on views should be, and there's no time for that
before next week's releases. We'll take another crack at this
later.
Discussion: https://postgr.es/m/16703-e348f58aab3cf6cc@postgresql.org
Diffstat (limited to 'doc/src')
-rw-r--r-- | doc/src/sgml/ref/lock.sgml | 15 |
1 files changed, 6 insertions, 9 deletions
diff --git a/doc/src/sgml/ref/lock.sgml b/doc/src/sgml/ref/lock.sgml index 37881f25ac5..4cdfae2279e 100644 --- a/doc/src/sgml/ref/lock.sgml +++ b/doc/src/sgml/ref/lock.sgml @@ -16,7 +16,7 @@ PostgreSQL documentation <refnamediv> <refname>LOCK</refname> - <refpurpose>lock a named relation (table, etc)</refpurpose> + <refpurpose>lock a table</refpurpose> </refnamediv> <refsynopsisdiv> @@ -34,9 +34,7 @@ LOCK [ TABLE ] [ ONLY ] <replaceable class="parameter">name</replaceable> [ * ] <title>Description</title> <para> - <command>LOCK TABLE</command> obtains a table-level lock on a - relation (table, partitioned table, foreign table, view, - materialized view, index, composite type, sequence), waiting + <command>LOCK TABLE</command> obtains a table-level lock, waiting if necessary for any conflicting locks to be released. If <literal>NOWAIT</literal> is specified, <command>LOCK TABLE</command> does not wait to acquire the desired lock: if it @@ -117,18 +115,17 @@ LOCK [ TABLE ] [ ONLY ] <replaceable class="parameter">name</replaceable> [ * ] <term><replaceable class="parameter">name</replaceable></term> <listitem> <para> - The name (optionally schema-qualified) of an existing relation to - lock. If <literal>ONLY</literal> is specified before a table name, only that + The name (optionally schema-qualified) of an existing table to + lock. If <literal>ONLY</literal> is specified before the table name, only that table is locked. If <literal>ONLY</literal> is not specified, the table and all its descendant tables (if any) are locked. Optionally, <literal>*</literal> can be specified after the table name to explicitly indicate that - descendant tables are included. When locking a view, all relations appearing - in the view definition are locked, regardless of <literal>ONLY</literal>. + descendant tables are included. </para> <para> The command <literal>LOCK TABLE a, b;</literal> is equivalent to - <literal>LOCK TABLE a; LOCK TABLE b;</literal>. The relations are locked + <literal>LOCK TABLE a; LOCK TABLE b;</literal>. The tables are locked one-by-one in the order specified in the <command>LOCK TABLE</command> command. </para> |