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Legal StudiesMySQL 中用不同列從一張表中複製記錄到另一張表中的查詢
你可以使用 INSERT INTO SELECT 語句。我們先建立一個表——
mysql> create table DemoTable1900 ( ClientId int NOT NULL AUTO_INCREMENT PRIMARY KEY, ClientName varchar(20), ClientAge int default 29 ) auto_increment=1000; Query OK, 0 rows affected (0.00 sec)
使用插入命令在表中插入一些記錄——
mysql> insert into DemoTable1900(ClientName,ClientAge) values('Chris',45);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1900(ClientName,ClientAge) values('David',29);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1900(ClientName,ClientAge) values('Mike',37);
Query OK, 1 row affected (0.00 sec)
mysql> insert into DemoTable1900(ClientName) values('Sam');
Query OK, 1 row affected (0.00 sec)使用選擇語句顯示錶中的所有記錄——
mysql> select * from DemoTable1900;
這將生成以下輸出——
+----------+------------+-----------+ | ClientId | ClientName | ClientAge | +----------+------------+-----------+ | 1000 | Chris | 45 | | 1001 | David | 29 | | 1002 | Mike | 37 | | 1003 | Sam | 29 | +----------+------------+-----------+ 4 rows in set (0.00 sec)
以下是建立第二個表的查詢——
mysql> create table DemoTable1901 ( EmployeeId int, EmployeeName varchar(20), EmployeeAge int ); Query OK, 0 rows affected (0.00 sec)
以下是用不同列從一張表中複製記錄到另一張表中的查詢——
mysql> insert into DemoTable1901(EmployeeId,EmployeeName,EmployeeAge) select ClientId,ClientName, ClientAge from DemoTable1900; Query OK, 4 rows affected (0.00 sec) Records: 4 Duplicates: 0 Warnings: 0
使用選擇語句顯示錶中的所有記錄——
mysql> select * from DemoTable1901;
這將生成以下輸出——
+------------+--------------+-------------+ | EmployeeId | EmployeeName | EmployeeAge | +------------+--------------+-------------+ | 1000 | Chris | 45 | | 1001 | David | 29 | | 1002 | Mike | 37 | | 1003 | Sam | 29 | +------------+--------------+-------------+ 4 rows in set (0.00 sec)
更新於: 27-Dec-2019
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