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Cause schema-qualified FROM items and schema-qualified variable references

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to behave according to SQL92 (or according to my current understanding
of same, anyway).  Per pghackers discussion way back in March 2002:
thread 'Do FROM items of different schemas conflict?'
This commit is contained in:
Tom Lane
2002-08-08 01:44:31 +00:00
parent e42f8e32e9
commit b084cc3504
8 changed files with 375 additions and 86 deletions
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17
src/backend/parser/parse_expr.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.124 2002/08/04 06:46:12 thomas Exp $
* $Header: /cvsroot/pgsql/src/backend/parser/parse_expr.c,v 1.125 2002/08/08 01:44:30 tgl Exp $
*
*-------------------------------------------------------------------------
*/
@ -709,6 +709,7 @@ transformColumnRef(ParseState *pstate, ColumnRef *cref)
/* Try to identify as an unqualified column */
node = colnameToVar(pstate, name);
if (node == NULL)
{
/*
@ -716,11 +717,15 @@ transformColumnRef(ParseState *pstate, ColumnRef *cref)
* try to find the name as a relation ... but not if
* subscripts appear. Note also that only relations
* already entered into the rangetable will be recognized.
*
* This is a hack for backwards compatibility with PostQUEL-
* inspired syntax. The preferred form now is "rel.*".
*/
int levels_up;
if (cref->indirection == NIL &&
refnameRangeTblEntry(pstate, name, &levels_up) != NULL)
refnameRangeTblEntry(pstate, NULL, name,
&levels_up) != NULL)
{
rv = makeNode(RangeVar);
rv->relname = name;
@ -748,7 +753,7 @@ transformColumnRef(ParseState *pstate, ColumnRef *cref)
}
/* Try to identify as a once-qualified column */
node = qualifiedNameToVar(pstate, name1, name2, true);
node = qualifiedNameToVar(pstate, NULL, name1, name2, true);
if (node == NULL)
{
/*
@ -784,8 +789,7 @@ transformColumnRef(ParseState *pstate, ColumnRef *cref)
}
/* Try to identify as a twice-qualified column */
/* XXX do something with schema name here */
node = qualifiedNameToVar(pstate, name2, name3, true);
node = qualifiedNameToVar(pstate, name1, name2, name3, true);
if (node == NULL)
{
/* Try it as a function call */
@ -825,8 +829,7 @@ transformColumnRef(ParseState *pstate, ColumnRef *cref)
}
/* Try to identify as a twice-qualified column */
/* XXX do something with schema name here */
node = qualifiedNameToVar(pstate, name3, name4, true);
node = qualifiedNameToVar(pstate, name2, name3, name4, true);
if (node == NULL)
{
/* Try it as a function call */