1. 使用 SQL Server Management Studio (SSMS) SQL Server Management Studio 是一个常用的图形界面工具,它可以方便地查看数据库的结构,包括表和字段数据类型。 步骤: 打开SQL Server Management Studio 并连接到你的数据库实例。 在“对象资源管理器”中,展开数据库 -> 表,找到你要查看的表。 右键点击表名,选择...
SQL Server开发过程中,为了传入数据集类型的变量(比如接受C#中的DataTable类型变量),需要定义“用户自定义表类型”,通过“用户自定义表类型”可以接收二维数据集作为参数,在需要修改“用户自定义表类型”的时候,增加字段,删除字段,修改字段类型等,它没有像表一样的alter table语法来进行修改。 用户自定义表类型 “用...
用Enterprise Manager 创建用户自定义数据类型的方法是:在Enterprise Manager 中选择要创建用户自定义类型的数据库,在数据库对象“User Defined Data Types”上单击右键,从开始菜单中选择“New User Defined Data Type”选项,就会出现如图7-3 所示的定义用户自定义数据类型属性对话框。可以在其中指定要定义的数据类型的名...
bit数据类型:存储1位值,存储上有优化,如果一张表中少于8个的bit列,他们将被存储在一个字节中,通常用来存储boolean值;在SQL Server中bit值没有字符串形式,True和False只是可以转化为bit值,就像整数值1、0可以转化为bit值一样,底层bit值存储的不是True或False,也不是整数值1、0,而只是一位值而已;高级语言中Fal...
tableStores a result-set for later processing MS Access Data Types Data typeDescriptionStorage TextUse for text or combinations of text and numbers. 255 characters maximum MemoMemo is used for larger amounts of text. Stores up to 65,536 characters.Note:You cannot sort a memo field. However,...
The data in the table can be compressed either by row or by page. Data compression can allow more rows to be stored on a page. For more information, see Data Compression.Types of TablesBesides the standard role of basic user-defined tables, SQL Server provides the following types of tables...
Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Creates a new table in the database. Note For reference to Warehouse in Microsoft Fabric, visit CREATE TABLE (Fabric Data Warehouse). For reference to Azure Synapse Analytics and Analytics ...
SQL Server Data Types The data types supported by SQL Server are, Numeric Data Types Data TypeDescription BITcan store single bit (0or1) orNULL TINYINTcan store numbers from0to255 SMALLINTcan store numbers from-32,768to32,767 INTcan store numbers between-2,147,483,648and2,147,483,647 ...
This article provides a summary of the different data types available in the SQL Server Database Engine.
Example : A table using numeric data types-- Creating a new table named "test" in the current schema CREATE TABLE test ( -- Defining a column named "id" of the DECIMAL data type, designated as the PRIMARY KEY id DECIMAL PRIMARY KEY, -- Defining a column named "name" of the VARCHAR...