Creates an SQL expression object representing the statement
specified by the statement argument, using the syntax as defined for the Compute
message flow processing node, with the exception that you are not allowed
to use:
- CREATE PROCEDURE
- CREATE MODULE
- CREATE SCHEMA
- CREATE FUNCTION
This function returns a pointer to the SQL expression object, which is
used as input to the functions that execute the statement, namely
cniSqlExecute and
cniSqlSelect.
You can create multiple SQL expression objects in a single message flow processing
node. Although you can create these objects at any time, you would typically
create them when the message flow processing node is instantiated, within
the implementation function
cniCreateNodeContext.