Question

这是我的问题：

    DECLARE @T1 TABLE (Id int, Name varchar(max));
    INSERT INTO @T1 VALUES (1, 'A');
    INSERT INTO @T1 VALUES (2, 'B');
    INSERT INTO @T1 VALUES (3, 'C');

    DECLARE @T2 TABLE (Id int, Name varchar(max));
    INSERT INTO @T2 VALUES (1, 'X');
    INSERT INTO @T2 VALUES (2, 'Y');
    INSERT INTO @T2 VALUES (3, 'Z');

    SELECT t1.*, t2.*
    FROM @T1 t1
    JOIN @T2 t2;

在最后一个';'附近出现语法错误。我错过了什么？

Answer 1

JOIN @T2 t2 ON t1.SomeColumn = t2.SomeColumn

要进行交叉加入，请使用CROSS JOIN而不是JOIN

Answer 2

DECLARE @T1 TABLE (Id int, Name varchar(max));
    INSERT INTO @T1 VALUES (1, 'A');
    INSERT INTO @T1 VALUES (2, 'B');
    INSERT INTO @T1 VALUES (3, 'C');

    DECLARE @T2 TABLE (Id int, Name varchar(max));
    INSERT INTO @T2 VALUES (1, 'X');
    INSERT INTO @T2 VALUES (2, 'Y');
    INSERT INTO @T2 VALUES (3, 'Z');

    SELECT t1.*, t2.*
    FROM @T1 t1
    JOIN @T2 t2 on t1.id=t2.id

如何JOIN表变量

2 个答案: