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Merge Resdom nodes into TargetEntry nodes to simplify code and save a

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few palloc's.  I also chose to eliminate the restype and restypmod fields
entirely, since they are redundant with information stored in the node's
contained expression; re-examining the expression at need seems simpler
and more reliable than trying to keep restype/restypmod up to date.

initdb forced due to change in contents of stored rules.
This commit is contained in:
Tom Lane
2005-04-06 16:34:07 +00:00
parent 0f3748a28c
commit ad161bcc8a
43 changed files with 537 additions and 799 deletions
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6
src/include/nodes/parsenodes.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2005, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.275 2005/03/29 17:58:51 tgl Exp $
* $PostgreSQL: pgsql/src/include/nodes/parsenodes.h,v 1.276 2005/04/06 16:34:07 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@@ -552,11 +552,11 @@ typedef struct RangeTblEntry
* SortClause -
* representation of ORDER BY clauses
*
* tleSortGroupRef must match ressortgroupref of exactly one Resdom of the
* tleSortGroupRef must match ressortgroupref of exactly one entry of the
* associated targetlist; that is the expression to be sorted (or grouped) by.
* sortop is the OID of the ordering operator.
*
* SortClauses are also used to identify Resdoms that we will do a "Unique"
* SortClauses are also used to identify targets that we will do a "Unique"
* filter step on (for SELECT DISTINCT and SELECT DISTINCT ON). The
* distinctClause list is simply a copy of the relevant members of the
* sortClause list. Note that distinctClause can be a subset of sortClause,