[英]How to delete one row from a table and multiple rows on another that are related?
[英]How to relation some rows from one related table row?
我如何執行查詢以選擇相關表(與第一張表的每一行都有一些相關行)的行,其foo1
值any equal/all equal/any not equal/all not equal
'foo2'。 例如,如果我有此查詢:
SELECT c FROM `table1` c
INNER JOIN `table2` p ON p.convocation_id = c.id
WHERE p.foo1 = foo2
將選擇table1
中的行,其中table2
foo1
值等於foo2
。
但是,如果我只想選擇“不是所有的foo1
值都等於foo2
怎么辦?
1->>等於foo2
SELECT top 1 * FROM table1
c INNER JOIN table2
p ON p.convocation_id = c.id在哪里p.foo1像'foo2'
2->>全部等於foo2
SELECT * FROM table1
c INNER JOIN table2
p ON p.convocation_id = c.id在哪里p.foo1像'foo2'
3->>不等於foo2
SELECT * FROM table1
c INNER JOIN table2
p ON p.convocation_id = c.id WHERE p.foo1 <>'foo2'
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