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create or replace function traudit04011 ( XPARAM IN VARCHAR2) return clob sql_macro as sql_statement varchar2(5000); vc_condition varchar(1000); p_search_by1 varchar(100) := ''; begin IF XPARAM is not NULL THEN DBMS_OUTPUT.PUT_LINE('TRUE'); ELSE DBMS_OUTPUT.PUT_LINE('FALSE'); END IF; sql_statement := 'select traudit04011.XPARAM d1 from dual'; -- In real world, instead of XPARAM there will be a variable storing dynamic query return sql_statement; EXCEPTION WHEN OTHERS THEN DBMS_OUTPUT.put_line('error'); end; /
select * from traudit04011('This is a parameter that always returns null');
D1
This is a parameter that always returns null