SMALLTALK - "MySql Delete duplicate entry by single SQL"

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DELETE T2
FROM   TABLE T1
JOIN   TABLE T2 ON (T2.value = T1.value )  AND
                   T2.TABLE_ID > T1.TABLE_ID);

Kashub's Code Barn - "MySql Delete duplicate entry by single SQL"

podświetlone jako smalltalk (dodał(a) technikq.blogspot.com @ 2013-01-07 13:43:57)