oracle - Crystal Report: IsNull equivalent for SQL Expression -


i want filter out data in crystal report. currently, have following formula in record selection: isnull({t_table.some_column}).

apparently, if use functions in crystal report, not converted sql query (i.e. not add sql statement t_table.some_column null. since checking pretty basic, want condition pushed sql statement generated because should faster filter @ database level rather crystal report. based on read, possible way push condition sql statement use sql expression fields. don't seem able write t_table.some_column null. gives error : from keyword not found expected.

any idea how solve this?

[edit]: isnull seems pushed when if isnull({t_table.some_column}). if view, e.g. isnull({v_view.some_column}), not pushed.

the isnull() function pushed sql query, condition not compared value in crystal report record selection formula.

so isnull({t_table.some_column}) converted sql query t_table.some_column null. isnull({t_table.some_column}) = true won't.


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