我們如何從一個表到另一個表插入“來自多個記錄的數據”？

Question

以下命令用於將數據從一個表插入另一個表。

insert into school_record (phone_id)
    select phone_id from students where name="abc"
    order by phone_id asc;

但是，如果我想為名稱“ abc”，“ def”，“ ghi”等插入所有phone_id值，該怎么辦...

從多個記錄中選擇值后，如何將數據從一個表插入到另一表？

Answer 1

如果您要獲取students表的所有phone_id，則只需執行以下操作：

insert into school_record (phone_id) select phone_id from students  order by phone_id asc;

Answer 2

僅您的WHERE子句限制記錄的數量。 做了

where Name = 'abc' or name = 'def' or name = 'ghi'

要么

where name in ('abc','def','ghi')

Answer 3

如果要使用常量名稱插入數據，則可以嘗試以下操作：

insert into school_record (phone_id)
    select phone_id from students where name in ("abc","def","xyz")
    order by phone_id asc;

如果要為另一個表包含的名稱插入phone_id，請嘗試以下操作：

insert into school_record (phone_id)
    select phone_id from students where name in (select name from tablename)
    order by phone_id asc;

請從下面參考“輸入”： https : //dev.mysql.com/doc/refman/5.0/en/comparison-operators.html#function_in

Answer 4

使用IN（）-在方括號中列出您需要插入的所有名稱

insert into school_record (phone_id)
select phone_id 
from students 
where name in ('abc', 'def', 'ghi', ...)
;

或者如果您需要插入所有

insert into school_record (phone_id)
select phone_id 
from students 
;