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Add an optional missing_ok argument to SQL function current_setting().

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This allows convenient checking for existence of a GUC from SQL, which is
particularly useful when dealing with custom variables.

David Christensen, reviewed by Jeevan Chalke
This commit is contained in:
Tom Lane
2015-07-02 16:40:55 -04:00
parent 7261172430
commit 10fb48d66d
9 changed files with 101 additions and 17 deletions
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contrib/tsearch2/tsearch2.c
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@ -363,7 +363,7 @@ tsa_tsearch2(PG_FUNCTION_ARGS)
tgargs[i + 1] = trigger->tgargs[i];
tgargs[1] = pstrdup(GetConfigOptionByName("default_text_search_config",
NULL));
NULL, false));
tgargs_old = trigger->tgargs;
trigger->tgargs = tgargs;
trigger->tgnargs++;