SQLCODE function

Syntax

>>-SQLCODE-----------------------------------------------------><

Within a message flow, you can access and update an external database resource using the available ESQL database functions in the Filter, Database, and Compute nodes. When making calls to an external database, you might get errors, such as a table does not exist, a database is not available, or an insert for a key that already exists.

When these errors occur, the default action of the broker is to generate an exception. This behavior is determined by how you have set the property Throw exception on database error. If this check box is selected, the broker stops processing the node, propagates the message to the node's failure terminal, and writes the details of the error to the ExceptionList. If you want to override the default behavior and handle a database error in the ESQL in the node, clear the Throw exception on database error check box. The broker does not throw an exception and you must include the THROW statement to throw an exception if a certain SQL state code is not expected. See THROW statement for a description of THROW.

If you choose to handle database errors in a node, you can use the database state function SQLCODE to receive information about the status of the DBMS call made in ESQL. You can include it in conditional statements in current node's ESQL to recognize and handle possible errors.