Fix problem with DLTT and blobs - thanks Pavel Zotov

Author: asfernandes

src/dsql/StmtNodes.cpp

@@ -9119,6 +9119,10 @@ const StmtNode* ModifyNode::modify(thread_db* tdbb, Request* request, WhichTrigg
 
 		if (!newRpb->rpb_relation)
 			newRpb->rpb_relation = relation;
+
+		const auto tempInstanceId = localTableRequest->getLocalTableInstanceId(tdbb);
+		orgRpb->rpb_temp_instance_id = tempInstanceId;
+		newRpb->rpb_temp_instance_id = tempInstanceId;
 	}
 
 	AutoLocalTableContext autoTransaction(tdbb, request, localTable, localTableRequest, transaction);
@@ -10319,6 +10323,7 @@ const StmtNode* StoreNode::store(thread_db* tdbb, Request* request, WhichTrigger
 	{
 		transaction = localTableRequest->getLocalTableTransaction();
 		relation = rpb->rpb_relation = localTable->getRelation(tdbb, localTableRequest);
+		rpb->rpb_temp_instance_id = localTableRequest->getLocalTableInstanceId(tdbb);
 	}
 
 	AutoLocalTableContext autoTransaction(tdbb, request, localTable, localTableRequest, transaction);

src/jrd/exe.cpp

@@ -473,6 +473,7 @@ void EXE_assignment(thread_db* tdbb, const ValueExprNode* to, dsc* from_desc,
 			jrd_rel* relation = nullptr;
 			Record* record = nullptr;
 			USHORT fieldId = 0;
+			FB_UINT64 tempInstanceId = 0;
 
 			if (to)
 			{
@@ -483,12 +484,19 @@ void EXE_assignment(thread_db* tdbb, const ValueExprNode* to, dsc* from_desc,
 					relation = rpb->rpb_relation;
 					record = rpb->rpb_record;
 					fieldId = toField->fieldId;
+					tempInstanceId = rpb->rpb_temp_instance_id;
 				}
 				else if (!(nodeAs<ParameterNode>(to) || nodeAs<VariableNode>(to)))
 					BUGCHECK(199);	// msg 199 expected field node
 			}
 
-			blb::move(tdbb, from_desc, to_desc, relation, record, fieldId);
+			if (tempInstanceId)
+			{
+				AutoSetRestore<FB_UINT64> autoFrameId(&tdbb->tdbb_temp_frame_id, tempInstanceId);
+				blb::move(tdbb, from_desc, to_desc, relation, record, fieldId);
+			}
+			else
+				blb::move(tdbb, from_desc, to_desc, relation, record, fieldId);
 		}
 		else if (!DSC_EQUIV(from_desc, to_desc, false))
 		{

src/jrd/recsrc/LocalTableStream.cpp

@@ -66,10 +66,12 @@ void LocalTableStream::internalOpen(thread_db* tdbb) const
 
 	if (m_table->useLtt)
 	{
+		const auto tempInstanceId = localTableRequest->getLocalTableInstanceId(tdbb);
 		AutoSetRestore<FB_UINT64> autoFrameId(
-			&tdbb->tdbb_temp_frame_id, localTableRequest->getLocalTableInstanceId(tdbb));
+			&tdbb->tdbb_temp_frame_id, tempInstanceId);
 
 		rpb->rpb_relation = m_table->getRelation(tdbb, localTableRequest);
+		rpb->rpb_temp_instance_id = tempInstanceId;
 	}
 
 	rpb->rpb_number.setValue(BOF_NUMBER);

src/jrd/req.h

@@ -60,6 +60,7 @@ struct RecordParameterBase
 	RecordParameterBase()
 		: rpb_transaction_nr(0), rpb_record(NULL), rpb_prior(NULL),
 		  rpb_undo(NULL), rpb_format_number(0),
+		  rpb_temp_instance_id(0),
 		  rpb_page(0), rpb_line(0),
 		  rpb_f_page(0), rpb_f_line(0),
 		  rpb_b_page(0), rpb_b_line(0),
@@ -75,6 +76,7 @@ struct RecordParameterBase
 	Record*		rpb_prior;			// prior record block if this is a delta record
 	Record*		rpb_undo;			// our first version of data if this is a second modification
 	USHORT		rpb_format_number;	// format number in relation
+	FB_UINT64	rpb_temp_instance_id;	// declared local table page instance
 
 	ULONG rpb_page;					// page number
 	USHORT rpb_line;				// line number on page