MySQL 9.3 Reference Manual / ... / Insert Records into Tables 22.3.4.1 Insert Records into Tables You can use the insert() method with the values() method to insert records into an existing relational table. The insert() method accepts individual columns or all columns in the table. Use ...
MySQL 8.0 Reference Manual / ... / Insert Records into Tables 22.4.4.1 Insert Records into Tables You can use the insert() method with the values() method to insert records into an existing relational table. The insert() method accepts individual columns or all columns in the table. Use ...
show status like 'Threads_connected'; --变量的值是表示当前有多少个客户连接该mysql服务器,连接数是否过多,网络时候存在问题!特别是在pconnect的情况下:) show status like 'created_tmp_tables'; --在硬盘上建立的临时表数目,如果这个值比较大的话,那么查询时需要建立临时表(CREATE TEMPORARY TABLE)的操作 就...
drop table if exists t_vip; create table t_vip( id int, name varchar(255) unique, email varchar(255) ); insert into t_vip(id,name,email) values(1,'zhangsan','zhangsan@123.com'); insert into t_vip(id,name,email) values(2,'lisi','lisi@123.com'); insert into t_vip(id,name,...
INSERT INTO `order` VALUES (1,11,'UPDATED'); INSERT INTO `order` VALUES (2,11,'UPDATED'); 启用键 ALTER TABLE `order` ENABLE KEYS; 解锁表 UNLOCK TABLES; key_buffer_size提高扩充键缓冲区 为了对LOAD DATA INFILE和INSERT在MyISAM表得到更快的速度,通过增加key_buffer_size系统变量来扩大 键高速缓...
mysql tables in use 1, locked 1 LOCK WAIT 6 lock struct(s), heap size 1136, 9 row lock(s), undo log entries 4 MySQL thread id 13410025, OS thread handle 139954474706688, query id 68147670 10.0.0.6 root update insert into t(cnt) values('abc-105-sz'),('abc-125-sz') ...
(2) TRANSACTION: TRANSACTION 6947, ACTIVE 9 sec inserting mysql tables in use 1, locked 1 LOCK WAIT 4 lock struct(s), heap size 1136, 2 row lock(s) MySQL thread id 13, OS thread handle 140676151592704, query id 258 127.0.0.1 root update insert into t(x) values(1024) *** (2) ...
mysql> insert into test values(4,'zuma'),(5,'kaka'); #批量插入2条记录,提升效率 Query OK,2rows affected (0.35sec) Records:2Duplicates:0Warnings:0mysql>select*fromtest;+---+---+ | id | name | +---+---+ |1| oldboy | |2|...
mysql tables in use 1, locked 1 LOCK WAIT 2 lock struct(s), heap size 360, 1 row lock(s), undo log entries 1 MySQL thread id 3796966, OS thread handle 0x7f78ea5c4700, query id 781051460 localhost root update insert into t8 values (NULL,1,2) ...
今天开发的一个同学问我一个MySQL的问题,说在测试数据库中执行一条Insert语句之后很久没有响应。我一看语句是一个很常规的insert into xxx values形式的语句。看起来有些不太合乎常理啊,我对这类问题立马来了兴趣,准备好好看看到底是什么原因。 向开发同学了解了环境之后,我登录到服务端,首先查看是否可能是磁盘空间...