show databases; -- 查看某个数据库的定义信息 show create database db1; -- 修改数据库字符信息 alter database db1 character set utf8; -- 删除数据库 drop database db1; 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 二、操作表 --创建表 create table student( id int, name varchar...
创建数据库 创建之前判断该数据库是否存在 if exists (select * from sysdatabases where name='databaseName') drop database databaseName go Create DATABASE databasename on primary-- 默认就属于primary文件组,可省略 ( /*--数据文件的具体描述--*/ name=‘databasename_data’,-- 主数据文件的逻辑名称...
代码语言:sql 复制 SELECT * FROM INFORMATION_SCHEMA.TABLES WHERE TABLE_NAME = 'your_table_name' 代码语言:txt 复制 这将返回有关指定表的详细信息,例如表名、所属架构、行数等。 使用sys表: sys表是SQL Server系统表,包含了许多有关数据库对象的信息。要查询表元数据,可以使用以下查询: 代码语言:sql ...
SQL SELECTs.nameAS[Session-Name],'1_EVENT'AS[Clause-Type],'Event-Name'AS[Parameter-Name], e.nameAS[Parameter-Value]FROMsys.server_event_sessionsASsJOINsys.server_event_session_eventsASeONe.event_session_id = s.event_session_idWHEREs.name ='event_session_test3...
例:select 展示列名 from 表名 where 列名 >ALL(select 对应列名 from ...);比子查询的值都大 select 展示列名 from 表名 where 列名 >ANY(select 对应列名 from ...);比子查询的任意一个值大 from型 select 展示列们 from 表名 inner join (select 列名 from ...) 临时表名 on 条件; 其中...
In order to write queries you need to know what tables and columns are available in your databases. When using SSMS (SQL Server Management Studio) you can simply expand the database’s tables folder to list all the tables found in your database. ...
次のパラメーター行は、SQL Server 2016 で前の SELECT で返された結果の一部です。 /*** Actual output, all rows, where target name = 'event_file'. Package Target Parameter Parameter-Type IsMandatoryYN Parameter-Description --- --- --- --- --- ---...
Need a good GUI Client to work with MS SQL Server?TablePlusprovides a modern, native tool with intuitive UI to manage multiple databases in cluding SQL Server, MySQL, PostgreSQL, SQLite, Oracle… And it’s available for free! Download TablePlus for Mac. ...
Select all Select this check box to select all databases in the list.Unselect all Select this check box to deselect all databases in the list.File name Shows the name of the Access database file to add to SSMA.Owner Displays the owner of the file....
mysql>show databases;+---+ | Database | +---+ | company | | information_schema | | mysql | | performance_schema | | sys | | test_20200702 | +---+6rowsinset (0.00sec) mysql>create database test_20200702; ERROR1007(HY000): Can't create database...