如何合并两个 MySQL 表？

要合并两个 MySQL 表，请使用以下语法 -

INSERT IGNORE INTO yourTableName1 select *from yourTableName2;登录后复制

创建第一个表 -

mysql> create table MergeDemo1 -> ( -> id int, -> primary key(id), -> Name varchar(200) -> ); Query OK, 0 rows affected (1.00 sec)登录后复制

mysql> insert into MergeDemo1 values(1,'John'); Query OK, 1 row affected (0.21 sec)登录后复制

mysql> select *from MergeDemo1;登录后复制登录后复制

+----+------+ | id | Name | +----+------+ | 1  | John | +----+------+ 1 row in set (0.00 sec)登录后复制

mysql> create table MergeDemo2    -> (    -> id int, -> primary key(id), -> Name varchar(200) -> ); Query OK, 0 rows affected (0.51 sec)登录后复制

mysql> insert into MergeDemo2 values(2,'David'); Query OK, 1 row affected (0.18 sec)登录后复制

mysql> select *from MergeDemo2;登录后复制

+----+-------+ | id | Name | +----+-------+ | 2 | David | +----+-------+ 1 row in set (0.00 sec)登录后复制

mysql> INSERT IGNORE -> INTO MergeDemo1 select *from MergeDemo2; Query OK, 1 row affected (0.19 sec) Records: 1 Duplicates: 0 Warnings: 0登录后复制

mysql> select *from MergeDemo1;登录后复制登录后复制

+----+-------+ | id | Name | +----+-------+ | 1 | John | | 2 | David | +----+-------+ 2 rows in set (0.00 sec)登录后复制