Description:
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I generate a SQL statement dynamically in PHP script.
When I execute this SQL query, the system crash with error "Query Processor Error: The query processor could not produce a query plan".
If I execute the same query directly on SQL server, it works.

The SQL string is:
  $sql = "BEGIN TRY 
	  BEGIN TRANSACTION 
		DELETE FROM EEES_AprenAssigPE WHERE IdAssig like '200166' AND Curs=2009;
		INSERT INTO EEES_AprenAssigPE (IdPlaEst, IdAssig, CodiRes, Curs) VALUES ('GEL01', '200166', 'C2', 2009);
		INSERT INTO EEES_AprenAssigPE (IdPlaEst, IdAssig, CodiRes, Curs) VALUES ('GEL01', '200166', 'E23', 2009);
		INSERT INTO EEES_AprenAssigPE (IdPlaEst, IdAssig, CodiRes, Curs) VALUES ('GEL01', '200166', 'E23.7', 2009); 
		SELECT 1 AS OK; 
	COMMIT TRANSACTION; 
END TRY 
BEGIN CATCH 
	SELECT -1 AS OK; 
	ROLLBACK TRANSACTION; 
END CATCH";