Notice: Undefined index: balnum in C:\Apache24\htdocs\test\informes\comvendant.php on line 159

Fatal error: Uncaught PDOException: SQLSTATE[42000]: [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Incorrect syntax near '='. in C:\Apache24\htdocs\test\informes\comvendant.php:167 Stack trace: #0 C:\Apache24\htdocs\test\informes\comvendant.php(167): PDOStatement->execute() #1 {main} thrown in C:\Apache24\htdocs\test\informes\comvendant.php on line 167