Question

这是我得到的新错误：

IF object_id('Osvezi') IS NULL

EXEC sp_executesql N' 
CREATE PROCEDURE Osvezi
    -- Add the parameters for the stored procedure here
    @tablica nvarchar(200)
AS
BEGIN
   IF @tablica = 'Uporabniki' THEN SELECT * FROM Uporabniki;

   IF @tablica = 'Dokumenti' THEN SELECT * from Dokumenti;
END'
GO

Answer 1

你可以这样做，但不推荐

CREATE PROCEDURE Osvezi
    -- Add the parameters for the stored procedure here
    @tablica nvarchar(200)
AS
BEGIN
    EXECUTE('SELECT * FROM' + @tablica);
END

还取决于您使用的是哪个DBMS; SQL SERVER？ MYSQL？ POSTGRESQL？

修改

如果您需要这种灵活性，请尝试Entity-Attribute-Value Model

Answer 2

您需要在字符串中使用双''来获得一个'，并且需要删除then。

IF object_id('Osvezi') IS NULL
EXEC sp_executesql N' 
CREATE PROCEDURE Osvezi
    -- Add the parameters for the stored procedure here
    @tablica nvarchar(200)
AS
BEGIN
   IF @tablica = ''Uporabniki'' SELECT * FROM Uporabniki;

   IF @tablica = ''Dokumenti'' SELECT * from Dokumenti;
END'
GO

使用变量确定要从中选择的表

2 个答案: