desc 表名; 查看表结构信息 show create table 表名; 查询建表详细信息 select COLUMN_NAME,COLUMN_TYPE,COLUMN_COMMENT from information_schema.columns where table_name='表名'; 查看表字段注释 show tables like '%tour%'; 模糊查询表名中含有 "tour" 的表…
free介绍 FREE(1) Linux User’s Manual FREE(1) NAME free - Display amount of free and used memory in the system SYNOPSIS free [-b | -k | -m] [-o] [-s delay ] [-t] [-l] [-V] DESCRIPTION free displays the total amount of free and used physical and swap mem…