arifsor Posted July 25, 2008 Share Posted July 25, 2008 please help me related to the db sch. user id | user_name ---|---------------- 1 | Willium 2 | John -------------------- qualification id | user_id | level | marks_obtained --------------------------------------------- 1 | 1 | 1 | 50 --------------------------------------------- 2 | 1 | 2 | 80 ---------------------------------------------- 3 | 1 | 3 | 90 --------------------------------------------- 4 | 2 | 1 | 50 --------------------------------------------- 5 | 2 | 2 | 40 --------------------------------------------- Required out put report user_name | level_one_marks | level_two_marks | level_three_marks ------------------------------------------------------------------------------------------- Willium | 50 | 80 | 90 John | 50 | 40 | NULL -------------------------------------------------------------------------------------------- * my query select u.user_name, level_one.marks_obtained as level_one_marks, level_two.marks_obtained as level_two_marks , level_three.marks_obtained as level_three marks from user u inner join qualification level_one on u.id = level_one.user_id inner join qualification level_two on u.id = level_two.user_id inner join qualification level_three on u.id = level_three.user_id where level_one.level = 1 and level_tow.level = 2 and level_three.level = 3 but above query only fetch one row user_name | level_one_marks | level_two_marks | level_three_marks ------------------------------------------------------------------------------------------- Willium | 50 | 80 | 90 -------------------------------------------------------------------------------------------- becauze level three mark is not availbel in qualification table for the user id 2 how can i produce my required report? please help Quote Link to comment Share on other sites More sharing options...
Gamic Posted July 25, 2008 Share Posted July 25, 2008 select u.user_name, level_one.marks_obtained as level_one_marks, level_two.marks_obtained as level_two_marks , level_three.marks_obtained as level_three marks from user u left outer join qualification level_one on u.id = level_one.user_id left outer join qualification level_two on u.id = level_two.user_id left outer join qualification level_three on u.id = level_three.user_id where level_one.level = 1 and level_tow.level = 2 and level_three.level = 3 Quote Link to comment Share on other sites More sharing options...
arifsor Posted July 25, 2008 Author Share Posted July 25, 2008 Thanks Quote Link to comment Share on other sites More sharing options...
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