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Make SQL arrays support null elements. This commit fixes the core array

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functionality, but I still need to make another pass looking at places
that incidentally use arrays (such as ACL manipulation) to make sure they
are null-safe.  Contrib needs work too.
I have not changed the behaviors that are still under discussion about
array comparison and what to do with lower bounds.
This commit is contained in:
Tom Lane
2005-11-17 22:14:56 +00:00
parent c859308aba
commit cecb607559
35 changed files with 2149 additions and 950 deletions
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7
src/backend/optimizer/util/clauses.c
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@ -8,7 +8,7 @@
*
*
* IDENTIFICATION
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.201 2005/10/15 02:49:21 momjian Exp $
* $PostgreSQL: pgsql/src/backend/optimizer/util/clauses.c,v 1.202 2005/11/17 22:14:52 tgl Exp $
*
* HISTORY
* AUTHOR DATE MAJOR EVENT
@ -784,7 +784,7 @@ contain_nonstrict_functions_walker(Node *node, void *context)
}
if (IsA(node, ArrayRef))
{
/* array assignment is nonstrict */
/* array assignment is nonstrict, but subscripting is strict */
if (((ArrayRef *) node)->refassgnexpr != NULL)
return true;
/* else fall through to check args */
@ -842,7 +842,8 @@ contain_nonstrict_functions_walker(Node *node, void *context)
return true;
if (IsA(node, CaseWhen))
return true;
/* NB: ArrayExpr might someday be nonstrict */
if (IsA(node, ArrayExpr))
return true;
if (IsA(node, RowExpr))
return true;
if (IsA(node, CoalesceExpr))