'REPLACE'附近的语法不正确

Question

以下SQL语句使用PRINT显示可靠的结果，但是使用EXEC，在“REPLACE”附近给出了错误的语法

USE EPDB

DECLARE @Table as nvarchar(100)
DECLARE @Column as nvarchar(100)
DECLARE @Select as nvarchar(375)
DECLARE @Where as nvarchar(275)

SET @Table = 'TableABC'
SET @Column = 'ColumnABC'`enter code here`
SET @Select = 'SELECT * FROM INFORMATION_SCHEMA.COLUMNS'
SET @Where = 'CRITERIA = ''VALUE'''


-- EXEC ('SELECT * FROM INFORMATION_SCHEMA.COLUMNSWHERETABLE_NAME = ' + @Table + '''')

PRINT @Select + ' WHERE ' + REPLACE(REPLACE(@Where,'CRITERIA','TABLE_NAME'),'VALUE',@Table)

EXEC (@Select + ' WHERE ' + REPLACE(REPLACE(@Where,'CRITERIA','TABLE_NAME'),'VALUE',@Table))

不确定这里发生了什么

Answer 1

试试这个：

DECLARE @sSQL varchar(1000)

SET @sSQL = @Select + ' WHERE ' + REPLACE(REPLACE(@Where,'CRITERIA','TABLE_NAME'),'VALUE',@Table)

EXEC (@sSQL)

我相信EXEC（）接受字符串变量或字符串常量，但不接受组合。