c-treeACE V11.0 Update Guide

c-treeACE SQL Direct SQL ctsqlIsParameterNull

In V11 and later, DSQL exposes a method to verify if a parameter has been set to NULL.

Function:

ctsqlIsParameterNull

Retrieve the parameter.

Parameters:

• hCmd [IN] - Command handle.
• index [IN] - Parameter number. Must be a number greater or equal to zero but less than parameter count.

Return:

Return CTSQL_TRUE if the parameter is set to NULL.