Supported syntax for outer joins can be summarized as follows:
Adaptive Server Enterprise fully supports *= and =* Transact-SQL syntax for outer joins.
SQL Anywhere and Sybase IQ support Transact-SQL outer joins, but reject some complex Transact-SQL outer joins that are potentially ambiguous.
Sybase IQ does not support chained (nested) Transact-SQL outer joins. Use ANSI syntax for this type of multiple outer join.
Transact-SQL outer join syntax is deprecated in SQL Anywhere and Sybase IQ.
