在两个SQL TABLES中搜索相同的值

Question

我有两张桌子：

• 表1列Number和TEXT
• 表2列Number和TEXT

现在表1有Nr = 12345AB和表2 Nr = 00012345AB

如何找到表1 中不在表2 中的所有列？

Answer 1

尝试此选择：

select 
  * 
from 
  table1 t1 
  left join table2 t2 on t1.number=t2.number 
where 
  t2.number is null

Answer 2

尝试 存在 ：

  select t1.*
    from Table1 t1
   where not exists (select 1
                       from Table2 t2
                      where t2.Number = t1.Number) 

Answer 3

我认为他正在寻找模糊匹配。在这种情况下=，LIKE，CONTAINS将不起作用。您需要将自己的内容类似于this solution。

Answer 4

    This is also a method but its too lengthy :-)

        SELECT table1.*
        FROM table2
        WHERE (number NOT IN
            (SELECT number 
             FROM table2)) AND (text NOT IN
            (SELECT text 
             FROM table2))