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Fix up text concatenation so that it accepts all the reasonable cases that

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were accepted by prior Postgres releases.  This takes care of the loose end
left by the preceding patch to downgrade implicit casts-to-text.  To avoid
breaking desirable behavior for array concatenation, introduce a new
polymorphic pseudo-type "anynonarray" --- the added concatenation operators
are actually text || anynonarray and anynonarray || text.
This commit is contained in:
Tom Lane
2007-06-06 23:00:50 +00:00
parent 7dab4f75ca
commit 2d4db3675f
22 changed files with 301 additions and 109 deletions
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8
src/backend/parser/parse_func.c
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@@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_func.c,v 1.196 2007/06/05 21:31:06 tgl Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_func.c,v 1.197 2007/06/06 23:00:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -227,9 +227,9 @@ ParseFuncOrColumn(ParseState *pstate, List *funcname, List *fargs,
}
/*
* enforce consistency with ANYARRAY and ANYELEMENT argument and return
* types, possibly adjusting return type or declared_arg_types (which will
* be used as the cast destination by make_fn_arguments)
* enforce consistency with polymorphic argument and return types,
* possibly adjusting return type or declared_arg_types (which will be
* used as the cast destination by make_fn_arguments)
*/
rettype = enforce_generic_type_consistency(actual_arg_types,
declared_arg_types,