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doc: FOR UPDATE / KEY / SHARE / KEY SHARE takes an table alias 

Previously only a table name was documented for this SELECT clause.

Reported-by: robert <lists@humanleg.org.uk>

Discussion: https://postgr.es/m/152483686904.19805.3369061025704720797@wrigleys.postgresql.org

Backpatch-through: master
This commit is contained in:
Bruce Momjian 2023-12-07 19:43:04 -05:00
parent 651030a3d7
commit 5134e9d295
1 changed files with 7 additions and 4 deletions
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11
doc/src/sgml/ref/select.sgml
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@ -45,7 +45,7 @@ SELECT [ ALL | DISTINCT [ ON ( <replaceable class="parameter">expression</replac
[ LIMIT { <replaceable class="parameter">count</replaceable> | ALL } ]
[ OFFSET <replaceable class="parameter">start</replaceable> [ ROW | ROWS ] ]
[ FETCH { FIRST | NEXT } [ <replaceable class="parameter">count</replaceable> ] { ROW | ROWS } { ONLY | WITH TIES } ]
[ FOR { UPDATE | NO KEY UPDATE | SHARE | KEY SHARE } [ OF <replaceable class="parameter">table_name</replaceable> [, ...] ] [ NOWAIT | SKIP LOCKED ] [...] ]
[ FOR { UPDATE | NO KEY UPDATE | SHARE | KEY SHARE } [ OF <replaceable class="parameter">from_reference</replaceable> [, ...] ] [ NOWAIT | SKIP LOCKED ] [...] ]
<phrase>where <replaceable class="parameter">from_item</replaceable> can be one of:</phrase>
@ -1577,7 +1577,7 @@ FETCH { FIRST | NEXT } [ <replaceable class="parameter">count</replaceable> ] {
The locking clause has the general form
<synopsis>
FOR <replaceable>lock_strength</replaceable> [ OF <replaceable class="parameter">table_name</replaceable> [, ...] ] [ NOWAIT | SKIP LOCKED ]
FOR <replaceable>lock_strength</replaceable> [ OF <replaceable class="parameter">from_reference</replaceable> [, ...] ] [ NOWAIT | SKIP LOCKED ]
</synopsis>
where <replaceable>lock_strength</replaceable> can be one of
@ -1591,8 +1591,11 @@ KEY SHARE
</para>
<para>
For more information on each row-level lock mode, refer to
<xref linkend="locking-rows"/>.
<replaceable class="parameter">from_reference</replaceable> must be a
table <replaceable class="parameter">alias</replaceable> or non-hidden
<replaceable class="parameter">table_name</replaceable> referenced
in the <literal>FROM</literal> clause. For more information on each
row-level lock mode, refer to <xref linkend="locking-rows"/>.
</para>
<para>