在mysql中如何将两个表相乘？

Basically what I want is cross product of two tables.

基本上我想要的是两个表的交叉产品。

t1 is :
    +------------+
    | student    |
    +------------+
    | 1234567890 | 
    | 1234567890 | 
    | 1234567890 | 
    | 000000001  | 
    +------------+
t2 is:
    +--------+
    | number |
    +--------+
    |      1 | 
    |      3 | 
    +--------+

How can I get a table which has two columns and 8 entries which are crosss product of values in t1 and t2 ?

如何获得一个包含两列和8个条目的表,它们是t1和t2中值的交叉乘积?

2 个解决方案

#1

Select student, number, from t1, t2;

从t1,t2中选择学生,编号;

#2

I think you need a CROSS JOIN.

我想你需要一个CROSS JOIN。

It'll join both tables on all rows.

它将在所有行上连接两个表。

SELECT * FROM t1 CROSS JOIN t2

#1