下面的示例展示了如何授权SHOW DATABASES权限以及实际使用的场景。 -- 创建用户并授予SHOW DATABASES权限CREATEUSER'db_viewer'@'localhost'IDENTIFIEDBY'password';GRANTSHOWDATABASESON*.*TO'db_viewer'@'localhost';-- 登录该用户mysql-u db_viewer-p-- 显示所有数据库SHOWDATABASES; 1. 2. 3. 4. 5. 6. 7...
修复方法执行 mysql_upgrade -u root -p 升级。 参考文章:https://www.douban.com/note/311849800/ [root@pfdb01 ~]# mysql_upgrade -u root -p Enter password: MySQL upgrade detected Phase 1/4: Fixing views from mysql Phase 2/4: Fixing table and database names Phase 3/4: Checking and upgra...
create database name; 创建数据库 use databasename; 选择数据库 drop database name 直接删除数据库,不提醒 show tables; 显示表 describe tablename; 显示具体的表结构 select 中加上distinct去除重复字段 mysqladmin drop databasename 删除数据库前,有提示。 显示当前mysql版本和当前日期 select version(),curr...
When specified, the name is passed to thelibmysqlclientC API library using theMYSQL_OPT_TLS_SNI_SERVERNAMEoption ofmysql_options(). The server name is not case-sensitive. To show which server name the client specified for the current session, if any, check theTls_sni_server_namestatus variab...
$ mysqlshow -u root -p db_learn Activity --count Enter password: Database: db_learn Table: Activity Rows: 99 +---+---+---+---+---+---+---+---+---+ | Field | Type | Collation | Null | Key | Default | Extra | Privileges | Comment | +---+---+---+---+---+-...
MySQL常用SQL语句之SHOW语句详解 SQL语句之SHOW语句 SHOW DATABASES – 显示当前所有数据库的名称 mysql> SHOW DATABASES; SHOW TABLES – 显示当前数据库中所有表的名称(需要设置默认数据库use DATABASE_NAME) Mysql> SHOW TABLES; SHOW TABLES FROM db_name – 显示数据库中的所有表...
INTO site_activity.totals (time, total) SELECT CURRENT_TIMESTAMP, COUNT(*) FROM site_activity.sessions; DELETE FROM site_activity.sessions; END character_set_client: utf8mb4 collation_connection: utf8mb4_0900_ai_ci Database Collation: utf8mb4_0900_ai_ci character_set_client は、このイ...
⭐ 应用场景:如果熟悉 MySQL 的同学会非常熟悉这个子句,在 MySQL 中,SHOW 子句常常用于查询库、表、函数等,在 Flink SQL 体系中也类似。Flink SQL 支持 SHOW 以下内容。 ⭐ SQL 语法标准: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 SHOW CATALOGS:展示所有 Catalog SHOW CURRENT CATALOG:展示当前的...
mysql> I could not find what is wrong with this function. I created PROCEDURE and it is no problem but not working with FUNCTION. Subject Views Written By Posted Function to show database, table, rows, create time, and 3099 Ramesh Phadke ...
current_user ( ) | + ---+ | root @localhost | + ---+ 1 row in set ( 0.00 sec ) 显示当前登录的用户我们可以通过在 mysql 服务器中使用以下查询来查看数据库服务器中当前登录的用户: mysql > select user , host , db , command ...