In this blog post, you’ll learn more about the Sybase Error INSERT/DELETE on cursor can modify only one table and the reason for receiving this error
Sybase SQL Error Message
INSERT/DELETE on cursor can modify only one table
Reason for this Error
You attempted to insert into a cursor and have specified values for more than one table, or you attempted to delete from a cursor that involves a join. Insert into one table at a time. For DELETE, use the FROM clause to specify the table you want to delete from.