任何人都可以幫我查詢嗎?SELECT列哪裏有一列是不同的?
我試過以下,但它有錯誤出現
SELECT Column1, Column2, Column3 FROM Table WHERE [Column1] NOT IN
(SELECT [Column1] FROM Table GROUP BY [Column1] HAVING COUNT([Column]) > 1)
無效MEMO,OLE或超鏈接對象的子查詢[列1]。
任何人都可以幫我查詢嗎?SELECT列哪裏有一列是不同的?
我試過以下,但它有錯誤出現
SELECT Column1, Column2, Column3 FROM Table WHERE [Column1] NOT IN
(SELECT [Column1] FROM Table GROUP BY [Column1] HAVING COUNT([Column]) > 1)
無效MEMO,OLE或超鏈接對象的子查詢[列1]。
使用Group By
與Having
條款:
SELECT Column1, MIN(Column2)AS Column2, MIN(Column3)AS Column3
FROM dbo.Table
GROUP BY Column1
HAVING (COUNT(Column1) = 1)
應工作,因爲有每個 「組」 只有一排。
據我得到的,你需要的所有數據,其中[列1]是唯一的(只顯示一次)
DECLARE @x TABLE (col1 INT, col2 INT, col3 INT)
INSERT INTO @x
([col1], [col2], [col3])
VALUES (1, 2, 3 )
,(1, 4, 5)
,(2, 6, 7)
SELECT * FROM @x
SELECT col1, col2 , col3 FROM @x
WHERE col1 NOT IN
(SELECT [col1] FROM @x GROUP BY [col1] HAVING COUNT(*) > 1)
原始查詢應該工作,你剛剛列,而不是列1。
SELECT Column1, Column2, Column3 FROM TableName WHERE [Column1] NOT IN
(SELECT [Column1] FROM TableName GROUP BY [Column1] HAVING COUNT(Column1) > 1)
這裏有一個例子:http://sqlfiddle.com/#!3/d99a8/1/0 –
具有列在MIN休息()函數不給我是個例外。謝謝。 – Pantelis