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mysql 記錄不存在就插入_mysql中插入記錄時不存在時插入已經存在則更新

mysql> truncate `200702`;

Query OK, 0 rows affected (0.01 sec)

mysql> select * from `200702`;

Empty set (0.01 sec)

mysql> insert into `200702` (`domain`, `2nd_domain`, `tld`, `query_ns1`, `query_ns2`, `report_date`)

values ('dnspod.com', 'dnspod', 'com', 1000, 2000, '2007-02-04') ON DUPLICATE KEY UPDATE `query_ns1` =

`query_ns1` + 1000, `query_ns2` = `query_ns2` + 2000;

Query OK, 1 row affected (0.00 sec)

mysql> select * from `200702`;

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

| id | domain | 2nd_domain | tld | query_ns1 | query_ns2 | query_ns3 | query_ns4 | report_date |

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

| 1 | dnspod.com | dnspod | com | 1000 | 2000 | 0 | 0 | 2007-02-04 |

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

1 row in set (0.00 sec)

mysql> insert into `200702` (`domain`, `2nd_domain`, `tld`, `query_ns1`, `query_ns2`, `report_date`)

values ('dnspod.com', 'dnspod', 'com', 1000, 2000, '2007-02-04') ON DUPLICATE KEY UPDATE `query_ns1` =

`query_ns1` + 1000, `query_ns2` = `query_ns2` + 2000;

Query OK, 2 rows affected (0.01 sec)

mysql> select * from `200702`;

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

| id | domain | 2nd_domain | tld | query_ns1 | query_ns2 | query_ns3 | query_ns4 | report_date |

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

| 1 | dnspod.com | dnspod | com | 2000 | 4000 | 0 | 0 | 2007-02-04 |

+----+------------+------------+------+-----------+-----------+-----------+-----------+-------------+

1 row in set (0.01 sec)

mysql>