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Doc: fix confusion about LEAKPROOF in syntax summaries.

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The syntax summaries for CREATE FUNCTION and allied commands
made it look like LEAKPROOF is an alternative to
IMMUTABLE/STABLE/VOLATILE, when of course it is an orthogonal
option.  Improve that.

Per gripe from aazamrafeeque0.  Thanks to David Johnston for
suggestions.

Discussion: https://postgr.es/m/162444349581.694.5818572718530259025@wrigleys.postgresql.org
This commit is contained in:
Tom Lane
2021-06-23 14:27:13 -04:00
parent 126cdaf47a
commit 2031e1668e
3 changed files with 8 additions and 5 deletions
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3
doc/src/sgml/ref/alter_function.sgml
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@@ -35,7 +35,8 @@ ALTER FUNCTION <replaceable>name</replaceable> [ ( [ [ <replaceable class="param
<phrase>where <replaceable class="parameter">action</replaceable> is one of:</phrase>
CALLED ON NULL INPUT | RETURNS NULL ON NULL INPUT | STRICT
IMMUTABLE | STABLE | VOLATILE | [ NOT ] LEAKPROOF
IMMUTABLE | STABLE | VOLATILE
[ NOT ] LEAKPROOF
[ EXTERNAL ] SECURITY INVOKER | [ EXTERNAL ] SECURITY DEFINER
PARALLEL { UNSAFE | RESTRICTED | SAFE }
COST <replaceable class="parameter">execution_cost</replaceable>