C# 执行查询语句报错There is no row at position 1.
string SQLZ = "SELECT PROCESS_ID,PDLINE_ID,MACHINE_ID,SHIFT_ID,WORK_DATE FROM TEST_B WHERE MANHOUR_ID = '"+manhour_id+"' AND ENABLED='Y'";
DataTable dsTemp_S1 = DBhelp.ExecuteSQL(SQLZ).Tables[0];