MySQL查看或显示数据库(SHOW DATABASES语句) 使用LIKE 从句,查看与 test_db 完全匹配的数据库:SHOWDATABASESLIKE ‘test_db’; 使用 LIKE 从句,查看名字中包含 test的数据库: 使用 LIKE 从句,查看名字以 db 开头的数据库:SHOWDATABASESLIKE ‘db%’; 使用 LIKE 从句,查看名字以 db 结尾的数据库: ...
AI代码解释 <mysql:8.0.31:information_schema>selectname,concat(truncate(max_count/1024/1024,2),' MB')'databases_pages_size'frominnodb_metricswherename='buffer_pool_bytes_data';+---+---+|name|databases_pages_size|+---+---+|buffer_pool_bytes_data|16.28MB|+---+---+1rowinset(0.00sec)...
a. show tables或show tables from database_name; -- 显示当前数据库中所有表的名称 b. show databases; -- 显示mysql 中所有数据库的名称 c. show columns from table_name from database_name; 或show columns from database_name.table_name; -- 显示表中列名称 d. show grants for user_name; --...
SHOWTRIGGERS[FROMdb_name][like_or_where]SHOW[GLOBAL|SESSION]VARIABLES[like_or_where]SHOWWARNINGS[LIMIT[offset,]row_count]like_or_where:'pattern'expr
执行顺序yscl博主的博文mysql好文推荐:执行顺序中每一个步骤都为下一个步骤创建一个虚拟表命令行查看所有的数据库SHOWDATABASES2. 选择一个名字叫database的数据库USE database3. 查看数据库中所有可用表SHOWTABLES4. 查看用户表user的字段SHOWCOLUMNS FROM user或者DESCRIBE user5.SHOW还可以直接接其他s ...
<mysql:8.0.31:information_schema>select name,concat(truncate(max_count/1024/1024,2),' MB')'databases_pages_size'from innodb_metrics where name ='buffer_pool_bytes_data'; +---+---+ | name | databases_pages_size | +---+---+ | buffer_pool...
1 row in set (0.00 sec) Database pages :同样经过换算结果为 1042*16/1024=16.28MB,同样的方法,写条SQL,得出结果。 <mysql:8.0.31:information_schema>select name,concat(truncate(max_count/1024/1024,2),' MB') 'databases_pages_size' from innodb_metrics where name = 'buffer_pool_bytes_data';...
1 row in set (0.00 sec) Database pages :同样经过换算结果为 1042*16/1024=16.28MB,同样的方法,写条SQL,得出结果。 <mysql:8.0.31:information_schema>select name,concat(truncate(max_count/1024/1024,2),' MB') 'databases_pages_size' from innodb_metrics where name = 'buffer_pool_bytes_data';...
Learn how to use the MySQL SHOW command to retrieve information about databases, tables, and other objects in your MySQL server.
Semantic Kernel is an SDK for C#, Python, and Javaused to develop solutions with AI. SK includes libraries that wrap direct calls to databases, supporting vector search. Semantic Kernel is maintained in three languages, while the list of supported storage engines (known as "connectors") varies...