sqlserver 一張表兩列都的值都相同處理

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    今天業(yè)務(wù)需要,網(wǎng)上沒找到 最后寫出來了就留個印以備查閱
    #T1表中 A,B 列 至少三行都相同的數(shù)據(jù)
    SELECT * FROM #T1 t1 WHERE
    (
    SELECT COUNT(*) FROM(
    SELECT DISTINCT A,B FROM #T1 WHERE A=t1.A
    ) A
    )=1
    AND (SELECT DISTINCT COUNT(ID) FROM #T1 WHERE A=t1.A)>=3
    ORDER BY t1.A