| Name | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time | Update_time | Check_time | Collation | Checksum | Create_options| Comment | +---+---+---+---+---+---+---+---+...
区别还是有差异的,例如本篇要讲的运维命令——mysqlshow,而站在开发工程师的角度来说,使用mysql show xxx……;或者show xxx;的概率比较多。 运维命令mysqlshow 1、什么是mysqlshow 如果作为一个运维工程师还不了解这个命令,那么我建议读者朋友可以移步到这里来详细看下这个命令的使用方式方法(本篇在使用时,使用mys...
显示建表建库语句 mysql> SHOW DATABASES; +---+ | Database | +---+ | information_schema | | mysql | | performance_schema | | pubmmrpg | | student | | sys | +---+ 6 rows in set (0.01 sec) mysql> SHOW CREATE DATABASE MYSQL; +---+---+ | Database | Create Database | +-...
MySQL Enterprise Edition The most comprehensive set of advanced features, management tools and technical support to achieve the highest levels of MySQL scalability, security, reliability, and uptime. Learn More » MySQL for OEM/ISV Over 2000 ISVs, OEMs, and VARs rely on MySQL as their products...
rows inset(0.01sec) mysql>SHOWBINARYLOGS; +---+---+| Log_name | File_size | +---+---+| mysql-bin.002022 | 817345 | | mysql-bin.002023 | 817932 | | mysql-bin.002024 | 816758 | | mysql-bin.002025 | 665265 | +---+---+4 rows inset(0.01sec) 显示主从相关 mysql>SHOWSLAVE...
| SALARY |decimal(10,2) | NO | | NULL | | +---+---+---+---+---+---+5rowsinset(0.06sec) SHOW CREATE DATABASES – 显示已经创建的库,创建时的语句 mysql>SHOW CREATE DATABASE blog;+---+---+ | Database | Create Database | +---+---...
mysql> create table tb_score(id int primary key auto_increment,stu_no varchar(10),course varchar(50),score decimal(4,1),key idx_stuNo_course(stu_no,course)); Query OK, 0 rows affected (0.03 sec) mysql> show tables; +---+ | Tables_in_testdb |...
Integrated and automated generative AI with HeatWave GenAI Accelerate query performance with HeatWave MySQL Query data in object storage and MySQL with HeatWave Lakehouse Automate the machine learning pipeline with HeatWave AutoML MySQL 8.4Reference ManualMySQL 8.4Release Notes ...
rows显示MySQL认为它执行查询时必须检查的行数。 Extra该列包含MySQL解决查询的详细信息 · Distinct:MySQL发现第1个匹配行后,停止为当前的行组合搜索更多的行。 · Not exists:MySQL能够对查询进行LEFT JOIN优化,发现1个匹配LEFT JOIN标准的行后,不再为前面的的行组合在该表内检查更多的行。
• Innodb_rows_deleted:执行DELETE操作删除的行数 • Com_select:查询操作的次数。 • Com_insert:插入操作的次数。对于批量插入的 INSERT 操作,只累加一次。 • Com_update:更新操作的次数。 • Com_delete:删除操作的次数。 •last_query_cost:查询优化器上一个查询的成本,最近一次删除用到数据页数量...