请注意,上述代码中的’username’和’localhost’应替换为实际的用户名和主机名。执行以上命令后,重新登录MySQL并尝试执行 SHOW WARNINGS 命令,看是否问题已经解决。 方法二:检查MySQL配置 如果提升用户权限无效,我们可以检查MySQL的配置文件以确保 SHOW WARNINGS 命令没有被禁用。在MySQL的配置文件(例如my.cnf或my.ini)...
11..*11110..*1..*Developer- experience: int+teachNewbie() : voidNewbie- experience: intMySQL+executeQuery(query: string) : ResultSet+setSessionVariable(name: string, value: string) : voidResultSet- warnings: Warning[]+getWarnings() : Warning[]Warning 以上是关于如何解决MySQL SHOW WARNINGS不...
二、show warnings命令实用示例 在实际操作中,我们可以通过以下步骤使用show warnings命令: 连接到MySQL服务器; 执行SHOW WARNINGS命令; 查看返回的所有警告信息。 例如: mysql>SHOW WARNINGS;+---+---+---+---+|id|type|message|severity|+---+---+---+---+|1|Information_schema|InnoDB:Rollbacklogisno...
11、当前服务器下存储引擎 1.使用show engines;以查看当前系统下所有引擎,如图: 圈出来那一行,yes就是有,no就是没有,default就是系统默认的,一般是开着的,disabled就是有,但是被关了。 你每创建一个数据表,MySQL就会创建一个硬盘文件来保存该数据表的格式(也就是它的定义),这个格式文件的基本名和数据表的名字...
/*Named commands are disabled. Use \* form only, or use named commands only in the beginning of a line ending with a semicolon (;) Since version 10.9 the client now starts with this option ENABLED by default! Disable with '-G'. Long format commands still work from the first ...
简介:以一个稍微复杂点的sql语句为例,使用show warnings命令查看MySQL执行计划的附加信息 MySQL的的执行计划解释命令explain有个extended选项,这个选项在MySQL早期的版本中会产生额外的信息,这些额外的信息在explain的输入中不会显示,需要在运行explain之后使用show warnings命令查看。在5.7以上版本中,extended已经成为explain的...
Here is a simple example that shows data-conversion warnings for INSERT. The example assumes that strict SQL mode is disabled. With strict mode enabled, the warnings would become errors and terminate the INSERT. mysql> CREATE TABLE t1 (a TINYINT NOT NULL, b CHAR(4)); Query OK, 0 rows...
Here is a simple example that shows data-conversion warnings for INSERT. The example assumes that strict SQL mode is disabled. With strict mode enabled, the warnings would become errors and terminate the INSERT. mysql> CREATE TABLE t1 (a TINYINT NOT NULL, b CHAR(4)); Query OK, 0 rows...
disabled by default. -i, --ignore-spaces Ignore space after function names. --init-command=name SQL Command to execute when connecting to MySQL server. Will automatically be re-executed when reconnecting. --local-infile Enable/disable LOAD DATA LOCAL INFILE. ...
PLUGIN_STATUS:插件状态,有效值为:ACTIVE、INACTIVE、DISABLED、DELETED PLUGIN_TYPE:插件类型,有效值为:STORAGE ENGINE、INFORMATION_SCHEMA、AUTHENTICATION. PLUGIN_TYPE_VERSION:插件类型描述符的版本 PLUGIN_LIBRARY:插件的共享库文件的名称。该名称可被用于INSTALL PLUGIN和UNINSTALL PLUGIN等语句执行安装与卸载插(soname)...