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how to group those datas ?
Here is a sample of my database : DATE | OPERATOR ---------------------- 2004-08-01 | ope1 2004-08-01 | ope3 2004-08-03 | ope2 2004-08-03 | ope1 2004-08-03 | ope3 2004-08-07 | ope2 2004-08-10 | ope3 ("Operator" is an enum of 'ope1', 'ope2', 'ope3') And I want to obtain something like... -
column value count
Hello everybody ! I don't know how to count different values from a column. I axplain myself : Here is my DB : (PLACE & PEOPLE are strings, GAME is a SET of (game1, game2, game3) PLACE PEOPLE GAME Tokyo Mr A game1 Tokyo Mr B game1 N-Y Mr C game2 Paris Mr D...
