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Trial implementation of ALTER DROP COLUMN.

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They are #ifdef'd.
Add -D_DROP_COLUMN_HACK__ compile option
to evaluate it.
This commit is contained in:
Hiroshi Inoue
2000-03-09 05:00:26 +00:00
parent 6513946cbb
commit fd9ff86bd9
8 changed files with 514 additions and 10 deletions
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10
src/backend/parser/parse_relation.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.35 2000/02/15 03:37:47 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_relation.c,v 1.36 2000/03/09 05:00:24 inoue Exp $
*
*-------------------------------------------------------------------------
*/
@ -359,6 +359,10 @@ expandTable(ParseState *pstate, char *refname, bool getaliases)
{
char *attrname;
#ifdef _DROP_COLUMN_HACK__
if (COLUMN_IS_DROPPED(rel->rd_att->attrs[varattno]))
continue;
#endif /* _DROP_COLUMN_HACK__ */
attrname = pstrdup(NameStr(rel->rd_att->attrs[varattno]->attname));
attr->attrs = lappend(attr->attrs, makeString(attrname));
}
@ -404,6 +408,10 @@ expandAll(ParseState *pstate, char *relname, Attr *ref, int *this_resno)
Var *varnode;
TargetEntry *te = makeNode(TargetEntry);
#ifdef _DROP_COLUMN_HACK__
if (COLUMN_IS_DROPPED(rel->rd_att->attrs[varattno]))
continue;
#endif /* _DROP_COLUMN_HACK__ */
attrname = pstrdup(NameStr(rel->rd_att->attrs[varattno]->attname));
/* varattno is zero-based, so check that length() is always greater */