insert ignore into test_data values(4,'cc');Query OK, 1 row affected (0.01 sec) select * from test_data;+---+---+| id | name |+---+---+| 1 | aa || 2 | bb || 3 | cc || 4 | cc |+---+---+4 rows in set (0.00 sec) replace into场景 >>replace into test_data...
constmysql=require('mysql');constconnection=mysql.createConnection({host:'localhost',user:'root',password:'password',database:'mydatabase'});connection.connect((err)=>{if(err)throwerr;console.log('Connected!');});constreplaceData=(table,column,oldValue,newValue)=>{constquery=`UPDATE${table}...
使用场景1 – (Query语句): 需求:把"hero_title"字段中所有的"之"换成" - "来展示,SQL如下: SELECTREPLACE(hero_title,'之',' - ')as repl_title,hero_name,price from LOL; 代码语言:javascript 代码运行次数:0 运行 AI代码解释 mysql>SELECTREPLACE(hero_title,'之',' - ')asrepl_title,hero_name...
Can someone please help me how to write same query using JOINs ? Server is MySQLv5.6 Subject Views Written By Posted Optimize subquery, replace IN() with JOIN 2522 Miron jajtic November 15, 2016 02:37PM Re: Optimize subquery, replace IN() with JOIN ...
经验证:mysql5.7 和mysql8.0均是上诉情况 结论 replace into在只存在主键冲突时会按预期的那样;若只有唯一索引冲突时 主从切换后导致新主库主键冲突错误、下游大数据数据不一致问题;同时存在主键冲突和唯一索引冲突可能会导致丢失数据。业务上不应使用replace into,应该在代码对唯一数据冲突作处理...
> replace into users(user_id, user_name) values(1, 'cc'); Query OK, 2 rows affected (0.00 sec) 完成之后数据的情况如下:> select * from users; +---+---+ | user_id | user_name | +---+---+ | 1 | cc | | 2 | bb | +---+---+ 2 rows in set (0.00 sec)看来数据像...
1 row in set (0.00 sec) insert ignore into test_data values(4,'cc'); Query OK, 1 row affected (0.01 sec) select * from test_data; +---+---+ | id | name | +---+---+ | 1 | aa | | 2 | bb | | 3 | cc | | 4 | cc ...
Query OK,1rowaffected (0.04sec) mysql>REPLACEINTOtestVALUES(1,'New','2014-08-20 18:47:42'); Query OK,2rowsaffected (0.04sec) mysql>SELECT*FROMtest;+---+---+---+|id|data|ts|+---+---+---+|1|New|2014-08-2018:47:42|+---+---+---+1rowinset(0.00sec) 创建第二张表与...
1 row in set (0.00 sec) root@test 01:16:26>insert into tt(name) values('a') on duplicate key update name='a'; Query OK, 1 row affected (0.00 sec) root@test 01:17:09>show create table t1 \G *** 1. row *** Table: t1 Create Table: CREATE TABLE `t1` ( `id` int(11)...
(2) TRANSACTION:TRANSACTION 1865, ACTIVE 19 sec insertingmysql tables in use 1, locked 15 lock struct(s), heap size 1136, 5 row lock(s), undo log entries 3MySQL thread id 1156, OS thread handle 139645480060672, query id 102 localhost msandbox updatereplace into ix(a,b) values(9,12)...