首先,我創建了一個表,一些樣本數據
IF OBJECT_ID('COuntNotNull') IS NOT NULL
Drop Table COuntNotNull
;With cte(Column1 , Column2 , Column3 , Column4)
AS
(
SELECT 'X' , ' X' , NULL , 'X' Union all
SELECT NULL , NULL , 'X' , 'X' Union all
SELECT NULL , NULL , NULL , NULL
)
SELECT * INTO COUNTNOTNULL FROM cte
下面的代碼動態獲取的列名對於給定的表,並得到非空的計數值
DECLARE @DynamicColms NVARCHAR(max)
,@CaseDynamicColms NVARCHAR(max)
,@Sql NVARCHAR(max)
,@TableName VARCHAR(100) = 'COuntNotNull'--Here give Your TableName
SELECT @DynamicColms = STUFF((
SELECT ', ' + COLUMN_NAME
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = @TableName
FOR XML PATH('')
), 1, 1, '')
--SELECT @DynamicColms
SELECT @CaseDynamicColms = STUFF((
SELECT '+ ' + 'CASE WHEN ' + COLUMN_NAME + ' IS NOT NULL THEN 1 ELSE 0 END'
FROM INFORMATION_SCHEMA.COLUMNS
WHERE TABLE_NAME = @TableName
FOR XML PATH('')
), 1, 1, '')
--SELECT @CaseDynamicColms
SET @Sql = 'SELECT ' + @DynamicColms + ',' + @CaseDynamicColms + CHAR(13) + CHAR(10) + ' AS COUNT_NOT_NULL FROM ' + @TableName
PRINT @Sql
EXECUTE (@Sql)
結果
Column1 Column2 Column3 Column4 COUNT_NOT_NULL
-------------------------------------------------
X X NULL X 3
NULL NULL X X 2
NULL NULL NULL NULL 0
你已經鏈接了使用動態SQL的答案,你不是。其實想想你的腳本正在做什麼,你會明白爲什麼它不工作。 – iamdave
以下是[動態SQL]上MS文檔的鏈接(https://docs.microsoft.com/en-us/sql/odbc/reference/dynamic-sql)。 –
@RamonLeonardi希望wolud能夠按照您的要求獲得結果 – 2017-05-24 14:21:55