Use the following rules and guidelines when pushing functions to the relational database:
When you push LAST_DAY() to Oracle, Oracle returns the date up to the second. If the input date contains subseconds, Oracle trims the date to the second.
When you push LTRIM, RTRIM, or SOUNDEX to a database, the database treats the argument (' ') as NULL, but the PowerCenter Integration Service treats the argument (' ') as spaces.
When you push SYSDATE or SYSTIMESTAMP to the database, the database server returns the timestamp in the time zone of the database server, not the PowerCenter Integration Service.
If you push SYSTIMESTAMP to an IBM DB2 or a Sybase database, and you specify the format for SYSTIMESTAMP, the database ignores the format and returns the complete time stamp.
An IBM DB2 database and the PowerCenter Integration Service produce different results for STDDEV and VARIANCE. IBM DB2 uses a different algorithm than other databases to calculate STDDEV and VARIANCE.
To push TO_DATE() function to an IBM DB2 database, you must use formats such as YYYYMMDD, YYYYMMDD HH24MISS, YYYY-MM-DD HH24MISS, YYYYMMDD HH24:MI:SS, YYYY/MM/DD HH24:MI:SS, and YYYY/MM/DD HH24MISS.