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maza problemina


GARAIS

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labdien man ir viena problema man ir draugu baze un izvelkot draugu draugus tas notiek bet dazi draugi atkartojas piemmeram tad kad diviem maniem draugiem ir kopejs draugs ka izveidot lai to id rada vienu reizi?

 

query: taads

 

 

SELECT id,friend_two_id,REPEAT(123 , 3)

FROM friends

WHERE friend_one_id IN (

SELECT friend_two_id

FROM friends

WHERE friend_one_id=3553497

)

AND

friend_two_id NOT IN (

SELECT friend_two_id

FROM friends

WHERE friend_one_id=3553497

)

AND

friend_two_id NOT IN (

SELECT friend_one_id

FROM friends

WHERE friend_one_id=3553497

) ;

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