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Do type conversion to match columns in UNION clauses.

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Currently force the type to match the _first_ select in the union.
Move oper_select_candidate() from parse_func.c to parse_oper.c.
Throw error inside of oper_inexact() if no match for binary operators.
Check more carefully that types can be coerced
 even if there is only one candidate operator in oper_inexact().
Fix up error messages for more uniform look.
Remove unused code.
Fix up comments.
This commit is contained in:
Thomas G. Lockhart
1998-05-29 14:00:24 +00:00
parent 329083a97e
commit 8536c96261
8 changed files with 542 additions and 1004 deletions
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6
src/backend/parser/parse_expr.c
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@ -7,7 +7,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.28 1998/05/09 23:29:53 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.29 1998/05/29 14:00:21 thomas Exp $
*
*-------------------------------------------------------------------------
*/
@ -302,12 +302,12 @@ transformExpr(ParseState *pstate, Node *expr, int precedence)
break;
}
/* These nodes do _not_ come from the original parse tree,
/* Some nodes do _not_ come from the original parse tree,
* but result from parser transformation in this phase.
* At least one construct (BETWEEN/AND) puts the same nodes
* into two branches of the parse tree; hence, some nodes
* are transformed twice.
* These cases below come from transforming function calls.
* The three cases below come from transforming function calls.
* Let's try just passing them through...
* - thomas 1998-03-14
*/