Notice: Undefined index: codclien in C:\Apache24\htdocs\test\ventas\ponecuotas2.php on line 135

Fatal error: Uncaught PDOException: SQLSTATE[42000]: [Microsoft][ODBC Driver 17 for SQL Server][SQL Server]Incorrect syntax near the keyword 'ORDER'. in C:\Apache24\htdocs\test\ventas\ponecuotas2.php:87 Stack trace: #0 C:\Apache24\htdocs\test\ventas\ponecuotas2.php(87): PDOStatement->execute() #1 C:\Apache24\htdocs\test\ventas\ponecuotas2.php(138): calcInt('') #2 {main} thrown in C:\Apache24\htdocs\test\ventas\ponecuotas2.php on line 87