BCP fix done token spanning packet boundaries (babelfish-for-postgresql#4478)

Problem: When DONE token (13 bytes) was split across TDS packet boundaries, only the first byte (0xFD) would be checked, causing the remaining bytes in the next packet to be misinterpreted.
Actually we have always seen that done token gets truncated to fit in available space, I can see in some cases the done token is only 8 bytes at the end of the message - packet marked with EOM. If we're at EOM with incomplete DONE token, that's actually acceptable.

Solution:

Check if DONE token is present
Only fetch additional bytes if NOT at EOM and buffer has < 13 bytes
Accept incomplete DONE tokens at EOM (handles truncated tokens from optimizing clients)

JIRA: BABEL-6317

Author: KushaalShroff

contrib/babelfishpg_tds/src/backend/tds/tdsbulkload.c

@@ -895,13 +895,28 @@ SetBulkLoadRowData(TDSRequestBulkLoad request, StringInfo message)
 	 */
 	CheckMessageHasEnoughBytesToReadRows(&message, 1);
 	if (request->rowCount < pltsql_plugin_handler_ptr->get_insert_bulk_rows_per_batch()
-		&& request->currentBatchSize < pltsql_plugin_handler_ptr->get_insert_bulk_kilobytes_per_batch() * 1024
-		&& (uint8_t) message->data[bcpOffset] != TDS_TOKEN_DONE)
-		ereport(ERROR,
-				(errcode(ERRCODE_PROTOCOL_VIOLATION),
-				 errmsg("The incoming tabular data stream (TDS) Bulk Load Request (BulkLoadBCP) protocol stream is incorrect. "
-						"Row %d, unexpected token encountered processing the request. %d",
-						request->rowCount, (uint8_t) message->data[bcpOffset])));
+		&& request->currentBatchSize < pltsql_plugin_handler_ptr->get_insert_bulk_kilobytes_per_batch() * 1024)
+	{
+		if ((uint8_t) message->data[bcpOffset] == TDS_TOKEN_DONE)
+		{
+			/*
+			 * DONE token found (0xFD). Clients send variable-length DONE (8-13 bytes).
+			 * Fetch next packet ONLY if: incomplete DONE AND NOT at EOM.
+			 */
+			if (message->len - bcpOffset < 13 && !TdsGetRecvPacketEomStatus())
+			{
+				CheckMessageHasEnoughBytesToReadRows(&message, message->len - bcpOffset + 1);
+			}
+		}
+		else
+		{
+			ereport(ERROR,
+					(errcode(ERRCODE_PROTOCOL_VIOLATION),
+					 errmsg("The incoming tabular data stream (TDS) Bulk Load Request (BulkLoadBCP) protocol stream is incorrect. "
+							"Row %d, unexpected token encountered processing the request. %d",
+							request->rowCount, (uint8_t) message->data[bcpOffset])));
+		}
+	}
 
 	pfree(temp);
 	return message;

test/dotnet/ExpectedOutput/bcp.out

@@ -913,3 +913,16 @@ bcp -h "CHECK_CONSTRAINTS"#!#in#!#bcp_source#!#destinationTable
 1
 #Q#drop table sourceTable
 #Q#drop table destinationTable
+#Q#Create table sourceTable(a text)
+#Q#Create table destinationTable(a text)
+#Q#Insert into sourceTable values ('abcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabca')
+bcp#!#out#!#bcp_source#!#sourceTable
+bcp#!#in#!#bcp_source#!#destinationTable
+#Q#Select * from sourceTable
+#D#text
+abcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabca
+#Q#Select * from destinationTable
+#D#text
+abcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabcaabca
+#Q#drop table sourceTable
+#Q#drop table destinationTable