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问答- 问题:Transact SQL查询-枢轴-SQL

Transact SQL查询-枢轴-SQL

Transact SQL查询-枢轴-SQL

;WITH cte
     AS (SELECT SeekId,
                CatId,
                ct.Name,
                ROW_NUMBER() OVER (PARTITION BY SeekId ORDER BY CatId) AS RN
         FROM   MySeekCatTable sk
                JOIN CatTable ct
                  ON sk.CatId = ct.CatId)
SELECT SeekId,
       MAX(CASE WHEN RN = 1 THEN Name END) AS A,
       MAX(CASE WHEN RN = 2 THEN Name END) AS B,
       MAX(CASE WHEN RN = 3 THEN Name END) AS C
FROM   cte
GROUP  BY SeekId
SQLServer 2022/1/1 18:53:28 有380人围观

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