[英]Table variable in a stored procedure
I would like to create a simple stored procedure which take as a parameter existing tables. 我想创建一个简单的存储过程,它将现有表作为参数。
I thought this procedure should work: 我认为这个程序应该有效:
@UserID INT,
@TableName varchar(255)
AS
BEGIN
IF(@UserID is not null)
BEGIN
update t
set t.ProductID = 100
from dbo.[@TableName] t
END
When I execute this stored procedure with a table name, the query completed with errors: 当我使用表名执行此存储过程时,查询完成时出现错误:
Invalid object name 'dbo.@TableName'.
无效的对象名称'dbo。@ TableName'。
Any advice? 有什么建议?
You'd have to do something like the following: 您必须执行以下操作:
DECLARE @SQL NVARCHAR(100)
SET @SQL = 'UPDATE ' + @TABLENAME + ' SET t.ProductID = 100 '
EXEC sp_executesql @SQL
Note: You have no WHERE
clause so all items in the @TableName
will be updated. 注意:您没有
WHERE
子句,因此@TableName
所有项都将更新。
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