mysql> select database(); +---+ | database() | +---+ | INVOICE | +---+ 1 row in set (0.00 sec) mysql> 3:查看数据库使用端口 mysql> show variables like 'port'; +---+---+ | Variable_name | Value | +---+---+ | port | 3306 | +---+---+ 1 row in set (0.00 ...
SHOW CREATE TABLE命令 在开始之前,请确保您已经安装并正确配置了MySQL数据库。 1.SHOW DATABASES命令 SHOW DATABASES命令用于显示MySQL服务器上的所有数据库。下面是一个示例: SHOWDATABASES; 1. 运行这个命令后,您将看到一个包含所有数据库的列表。例如: +---+ | Database | +---+ | information_schema | |...
MariaDB [(none)]> create database test1; Query OK, 1 row affected (0.001 sec) MariaDB [(none)]> show databases; +---+ | Database | +---+ | hello | | information_schema | | mysql | | performance_schema | | test1 | +---+ 5 rows in set (0.000 sec) 1. 2. 3. 4. 5....
Current database: mysql Current user: root@localhost SSL: Not in use Current pager: stdout Using outfile: '' Using delimiter: ; Server version: 5.1.49-log MySQL Community Server (GPL) Protocol version: 10 Connection: Localhost via UNIX socket Server characterset: utf8 Db characterset: utf8 C...
显示GTID集的字段(例如replication_connection_status性能架构表中的gtid_executed,gtid_purged,RECEIVED_TRANSACTION_SET以及SHOW SLAVE STATUS的GTID相关结果)在没有GTID时返回空字符串。显示单个GTID的字段(如Performance Schema replication_applier_status_by_worker表中的CURRENT_TRANSACTION)在未使用GTID事务时显示ANONYMOUS...
show processlist show full processlist 各个列的含义 (1)id列,用户登录mysql时,系统分配的“connection_id” (2)user列,显示当前用户。如果不是root,这个命令就只显示用户权限范围的sql语句 (3)host列,显示这个语句是从哪个ip的哪个端口上发的,可以用来跟踪出现问题语句的用户 ...
mysql> status---/usr/local/mysql/bin/mysql Ver 14.14 Distrib 5.7.27, for linux-glibc2.12 (x86_64) using EditLine wrapperConnection id: 11Current database:Current user: root@localhostSSL: Not in useCurrent pager: stdoutUsing outfile: '/tmp/tee.log'Using delimiter: ;Server version: 5.7...
Invokemysqlshowlike this: mysqlshow[options][db_name[tbl_name[col_name]]] If no database is given, a list of database names is shown. If no table is given, all matching tables in the database are shown. If no column is given, all matching columns and column types in the table are...
Invoke mysqlshow like this: mysqlshow [options] [db_name [tbl_name [col_name]]]If no database is given, a list of database names is shown. If no table is given, all matching tables in the database are shown. If no column is given, all matching columns and column types in ...
CREATE DATABASE std DEFAULT CHARSET utf8 COLLATE utf8_general_ci; ## utf8 编码。官网案例用的是 utf8mb4 编码 1.2 删:DROP, DROP DATABASE db1; drop database if exists db1; ##先查询,如果存在则删除。如果不存在,但是删除则会报错 1.3 查:SHOW, SHOW DATABASES ##返回的是所有数据库的名称。