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Commit23ef119

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Revise the header comment for match_clause_to_indexcol()
Sinced4378c0, match_clause_to_indexcol() doesn't always return NULLfor an OR clause. This commit reflects that in the function header comment.Reported-by: Pavel Borisov <pashkin.elfe@gmail.com>
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‎src/backend/optimizer/path/indxpath.c

Lines changed: 3 additions & 2 deletions
Original file line numberDiff line numberDiff line change
@@ -2639,8 +2639,9 @@ match_clause_to_index(PlannerInfo *root,
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* Returns an IndexClause if the clause can be used with this index key,
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* or NULL if not.
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*
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* NOTE: returns NULL if clause is an OR or AND clause; it is the
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* responsibility of higher-level routines to cope with those.
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* NOTE: This routine always returns NULL if the clause is an AND clause.
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* Higher-level routines deal with OR and AND clauses. OR clause can be
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* matched as a whole by match_orclause_to_indexcol() though.
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*/
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staticIndexClause*
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match_clause_to_indexcol(PlannerInfo*root,

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