SQL DB2 / 400：检查是否存在全局临时表

Question

SQL DB2/400 : Does anyone knows how to check existence globale temporary table before déclare instruction in a SQL function ?

The statement "DECALRE" causes a crash of the SQL function if the temporary table is already created.

I use the instruction: "if not exists ((select count (*) from session.TEMP_IDX)) then ..." but I have the impression that it does not work ...

Answer 1

Use the with replace clause of the DECLARE GLOBAL TEMPORARY TABLE statement

That way it won't matter if the table is there or not.