Is EXISTS clause supported by DBISAM's sql engine?

Question

Strangely, it seems that the EXISTS clause is not supported by DBISAM's sql engine, as it's always resulting in an SQL error. The following is a sample where EXISTS is being used. Am i missing anything here?

update Table1 set HASXACTION = False
WHERE EXISTS (SELECT SERIALID
              From Table2  
              LEFT JOIN Table1 ON (Table2 .AUXILACT = Table1 .CODE) 
                               AND (Table2 .CHARTACT = Table1 .CHARTACT) )

Answer 1

Never mind people, i just learned that DBISAM does not support EXISTS operator for specifying sub-select predicates in WHERE clauses. It's documented within DBISAM's help file(screenshot attached).