1. 前言 sql create database 语句用来创建一个新的数据库。 2. 语法 create database 语句的基本语法如下: create database DatabaseName; DatabaseName 为数据库名字,它的名字必须是唯一的,不能和其它数据库重名。 3. 示例 如果希望创建一个名为 test 的数据库,那么 CREATE DATABASE 语句的写法如下: create...
需要CREATE DATABASE、CREATE ANY DATABASE或ALTER ANY DATABASE权限。 为了在 SQL Server 实例上保持对磁盘使用的控制,创建数据库的权限通常仅限于几个登录名。 以下示例提供向数据库用户Fay创建数据库的权限。 SQL USEmaster; GOGRANTCREATEDATABASETO[Fay]; GO ...
Applies to: SQL Server This article describes how to create a database in SQL Server by using SQL Server Management Studio or Transact-SQL. To create a database in Azure SQL Database using T-SQL, see CREATE DATABASE. Limitations A maximum of 32,767 databases can be specified on an ...
SQL USEmaster; GO IF DB_ID (N'mytest') IS NOT NULLDROPDATABASEmytest; GOCREATEDATABASEmytest; GO-- Verify the database files and sizesSELECTname,size,size*1.0/128AS[SizeinMBs]FROMsys.master_filesWHEREname= N'mytest'; GO B. 建立指定資料檔案和交易記錄檔的資料庫 ...
CREATE TABLE Persons ( Id_P int, LastName varchar(255), FirstName varchar(255), Address varchar(255), City varchar(255) ) SQL 约束(Constraints) 约束用于限制加入表的数据的类型。 可以在创建表时规定约束(通过 CREATE TABLE 语句),或者在表创建之后也可以(通过 ALTER TABLE 语句)。
SQL Server Overview In SQL Server, this statement creates a new database and the files used and their filegroups. It can also be used to create a database snapshot, or attach database files to create a database from the detached files of another database. ...
SQL Create Database, Table, and Index Create a Database To create a database: CREATE DATABASE database_name Create a Table To create a table in a database: CREATE TABLE table_name ( column_name1 data_type, column_name2 data_type, ... ) Example This example demonstrates how you can...
CREATE DATABASE <database name> 1. CREATE DATABASE的完整语法 CREATE DATABASE <NewDataBase> [ON [PRIMARY] ([NAME = <'logical file name'>,] FILENAME = <'file name'> [, SIZE = <size in kilobytes,megabytes,gigabytes,or terabytes>] ...
CREATE DATABASE DB_NAME; Here, CREATE DATABASE command creates a database DB_NAME is the name of the database created CREATE DATABASE IF NOT EXISTS If a database already exists, SQL will throw an error while creating another database of the same name. In such situations, we can ...
CREATE DATABASE [TutorialDB] GO USE [TutorialDB] -- Create a new table called 'Customers' in schema 'dbo' -- Drop the table if it already exists IF OBJECT_ID('dbo.Customers', 'U') IS NOT NULL DROP TABLE dbo.Customers GO -- Create the table in the specified schema ...