mysql - SQL One to Many column association rows -


given table below want select rows same 'code' associated multiple 'sub_code'.

+------+------------+-------------+ | div  |    code    |  sub_code   | +------+------------+-------------+ | 11   | 1000       | 1212        | | 11   | 1000       | 1213        | | 11   | 1000       | 3434        | | 11   | 1000       | 1000        | | 11   | 1000       | 3000        | | 11   | 3000       | 1213        | | 11   | 2000       | 1212        | | 20   | 1500       | 5656        | | 20   | 1500       | 1213        | +------+------------+-------------+

for above table result should be

+------+------------+-------------+ | div  |    code    |  sub_code   | +------+------------+-------------+ | 11   | 1000       | 1212        | | 11   | 1000       | 1213        | | 11   | 1000       | 3434        | | 11   | 1000       | 1000        | | 11   | 1000       | 3000        | | 11   | 1500       | 5656        | | 11   | 1500       | 1213        | +------+------------+-------------+

this tried, how ever results fails.

select code table_name (count(sub_code) > 1);

first fetch codes multiple sub_codes exists; project table columns filtering using above results nested query:

select * table_name code in      (select code table_name group code having count(sub_code) > 1);

demo: http://sqlfiddle.com/#!9/1d91f/3/0


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