TSQL0 corresponds to PASSTHROUGH mode, and TSQL2 corresponds to SYBASE mode. For these modes, your SQL should not require any modification.
If you used TSQL1 mode for earlier releases, review your SQL.
If you migrate to a setting of PASSTHROUGH mode, your code will probably fail because the TSQL1 partial conversion does not occur. If you migrate to a new setting of SYBASE mode, your code should work because DirectConnect passes any SQL statement that the parser cannot identify on to the server without changes.
