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Developer-C 11.1
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CREATE TABLE test_table ( e_id NUMBER(10), e_value NUMBER(10) );
BEGIN INSERT INTO test_table VALUES(11,123); INSERT INTO test_table VALUES(11,123); INSERT INTO test_table VALUES(11,null); END; /
1 rows affected
SELECT e_id, CASE WHEN e_value IS NULL THEN 'No'ELSE 'Yes' END is_answer FROM test_table ORDER BY e_value NULLS FIRST FETCH FIRST ROW ONLY;
E_ID
IS_ANSWER
11
No