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Code Issues

A more generic solution for CORE-1245: Incorrect column values with outer joins and views. It also fixes CORE-3981: Sub-optimal predicate checking while selecting from a view.

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dimitr 2012-11-14 08:24:18 +00:00
parent 41925536c7
commit 606ae96e9f
1 changed files with 16 additions and 6 deletions
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22
src/dsql/ExprNodes.cpp
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@ -5536,13 +5536,23 @@ ValueExprNode* FieldNode::pass1(thread_db* tdbb, CompilerScratch* csb)
AutoSetRestore<jrd_rel*> autoView(&csb->csb_view, relation);
AutoSetRestore<StreamType> autoViewStream(&csb->csb_view_stream, stream);
// ASF: If the view field doesn't reference an item of a stream, evaluate it
// based on the view dbkey - CORE-1245.
RecordKeyNode* recNode;
// ASF: If the view field doesn't reference any of the view streams,
// evaluate it based on the view dbkey - CORE-1245.
SortedStreamList streams;
sub->jrdStreamsCollector(streams);
bool view_refs = false;
for (size_t i = 0; i < streams.getCount(); i++)
{
const CompilerScratch::csb_repeat* const sub_tail = &csb->csb_rpt[streams[i]];
if (!sub->is<FieldNode>() &&
(!(recNode = sub->as<RecordKeyNode>()) ||
(recNode->blrOp != blr_dbkey && recNode->blrOp != blr_record_version2)))
if (sub_tail->csb_view && sub_tail->csb_view_stream == csb->csb_view_stream)
{
view_refs = true;
break;
}
}
if (!view_refs)
{
ValueExprNodeStack stack;
CMP_expand_view_nodes(tdbb, csb, stream, stack, blr_dbkey, true);