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。 只能通过删除
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 ...
有关SQL Server 和 Azure SQL 平台,请访问 CREATE TABLE,并选择所需的产品版本。有关 Microsoft Fabric 中的 SQL 数据库,请参阅 CREATE TABLE。有关 Microsoft Fabric 中的仓库的参考,请访问 CREATE TABLE (Fabric)。 备注 Azure Synapse 分析中的无服务器 SQL 池仅支持外部表和临时表。 Transact-SQL 语法约定...
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 ...
在SQL Server 2008 中,用户定义表类型是指用户所定义的表示表结构定义的类型。您可以使用用户定义表类型为存储过程或函数声明表值参数,或者声明您要在批处理中或在存储过程或函数的主体中使用的表变量。有关如何定义表结构的详细信息,请参阅CREATE TABLE (Transact-SQL)。
DBMS and version Types MySQL 5.7 TINYINT(1) PostgreSQL 9.5 BOOLEAN SQL Server 2014 BIT Oracle 11g BOOLEANBinary large object Type:A binary string is a sequence of octets that does not have either a character set or collation associated with it and is described by a binary data type ...
Memory-optimized table types Show 3 more Applies to: SQL Server Azure SQL Database Azure SQL Managed Instance SQL database in Microsoft Fabric Creates an alias data type or a user-defined type in the current database in SQL Server or Azure SQL Database. The implementation of an alias data...
This article provides a summary of the different data types available in the SQL Server Database Engine.
In Oracle and SQL Server CREATETABLECompanies (idintNOTNULLPRIMARYKEY,namevarchar(50), addresstext, emailvarchar(50), phonevarchar(10) ); To learn more, visitSQL PRIMARY KEY. Define constraints while creating a table We can also add different types of constraints while creating a table. For ...