SQL分别返回两个表行

Question

我有两个表,想要返回两个表的行.两个表都没有任何关系.

Table 1有列userid, name和其他列......并且Table 2只有两列id, name.

我希望两个表结果都在一个查询结果集中.

表结果:

userid name and other columns from Table 1.
id     name and NULL, NULL should show as Table 2 do not have extra columns.

Answer 1

用一个 union

select userid, name, col1, col2, col3 from table1
union all
select id, name, null, null, null from table2