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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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4
src/backend/parser/parse_agg.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/parser/parse_agg.c,v 1.77 2007/02/01 19:10:27 momjian Exp $
* $PostgreSQL: pgsql/src/backend/parser/parse_agg.c,v 1.78 2007/06/06 23:00:37 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -363,7 +363,7 @@ check_ungrouped_columns_walker(Node *node,
*
* agg_input_types, agg_state_type, agg_result_type identify the input,
* transition, and result types of the aggregate. These should all be
* resolved to actual types (ie, none should ever be ANYARRAY or ANYELEMENT).
* resolved to actual types (ie, none should ever be ANYELEMENT etc).
*
* transfn_oid and finalfn_oid identify the funcs to be called; the latter
* may be InvalidOid.