DROP RULE 將會在未來的 SQL Server 版本中移除。 請勿在新的開發工作中使用 DROP RULE ,並計劃修改目前使用這些工作的應用程式。 CHECK請改用CHECK您可以使用 CREATE TABLE 或 ALTER TABLE 關鍵詞建立的條件約束。 如需詳細資訊,請參閱 Unique Constraints and Check Constraints。 Transact-SQL 語法慣例 語法 synta...
DROP RULE 将在SQL Server 的未来版本中删除。 请勿在新开发工作中使用 DROP RULE ,并计划修改当前使用它们的应用程序。 CHECK请改用CHECK可以使用 CREATE TABLE 或 ALTER TABLE 关键字创建的约束。 有关详细信息,请参阅 Unique Constraints and Check Constraints。 Transact-SQL 语法约定 语法 syntaxsql 复制 DRO...
The code below generates two separate sets of commands: one to drop all foreign key constraints, and one to create them again. These scripts are stored in a table so that, if you drop the constraints and then disaster of some kind strikes during the create, you still have everything h...
SQL Server 2012 Microsoft.SqlServer.TransactSql.ScriptDom C# 使用英语阅读 保存 添加到集合 添加到计划 通过 Facebookx.com 共享LinkedIn电子邮件 打印 项目 2013/04/26 本文内容 继承层次结构 语法 构造函数 属性 显示另外 3 个 Represents the abstract base class for drop clustered constraints. ...
New Drop If Exists Syntax in SQL Server 2016 Working with DEFAULT constraints in SQL Server Best practices for SQL Server database ALTER table operations Make your SQL Server database changes backward compatible when dropping a column SQL Server ALTER COLUMN Operations – Add Column...
create_table_statement: This statement is used to create tables within the schema. It defines the structure of the tables, including column names, data types, constraints, etc. create_view_statement: This statement is used to create views within the schema. Views are virtual tables that present...
Dropping a unique constraints We can use DROP sql command to remove unique constraints associated to any column, here is an example. ALTER TABLE 'content_cat' DROP INDEX 'cat_id' The above command will remove the unique index associated withcat_idfield ofcontent_cattable ...
Represents the drop clustered constraints state option. 继承层次结构 System.Object Microsoft.SqlServer.TransactSql.ScriptDom.TSqlFragment Microsoft.SqlServer.TransactSql.ScriptDom.DropClusteredConstraintOption Microsoft.SqlServer.TransactSql.ScriptDom.DropClusteredConstraintStateOption 命名空间: Microsoft.SqlServer.Tr...
SQL CE 2.0 and 1.1 Class Library Save Add to CollectionsAdd to plan Share via Facebookx.comLinkedInEmail Print DROP TABLE (SQL Server Compact) Article 03/24/2011 In this article Syntax Arguments Remarks Example Removes a table definition and all data, indexes, constraints, and permission specif...
The following example deletes a clustered index with a PRIMARY KEY constraint by dropping the constraint. The ProductCostHistory table has no FOREIGN KEY constraints. If it did, those constraints would have to be removed first. USE AdventureWorks2012; GO -- Set ONLINE = OFF to execute this ex...