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Carry column aliases from the parser frontend. Enables queries like

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SELECT a FROM t1 tx (a);
Allow join syntax, including queries like
  SELECT * FROM t1 NATURAL JOIN t2;
Update RTE structure to hold column aliases in an Attr structure.
This commit is contained in:
Thomas G. Lockhart
2000-02-15 03:38:29 +00:00
parent 92c8437d8d
commit a344a6e7b5
27 changed files with 1102 additions and 324 deletions
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25
src/backend/nodes/makefuncs.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.19 2000/01/26 05:56:31 momjian Exp $
* $Header: /cvsroot/pgsql/src/backend/nodes/makefuncs.c,v 1.20 2000/02/15 03:37:09 thomas Exp $
*
* NOTES
* Creator functions in POSTGRES 4.2 are generated automatically. Most of
@ -141,3 +141,26 @@ makeConst(Oid consttype,
cnst->constiscast = constiscast;
return cnst;
}
/*
* makeAttr -
* creates an Attr node
*/
Attr *
makeAttr(char *relname, char *attname)
{
Attr *a = makeNode(Attr);
a->relname = pstrdup(relname);
a->paramNo = NULL;
if (attname != NULL)
a->attrs = lcons(makeString(pstrdup(attname)), NIL);
a->indirection = NULL;
return a;
}