Documenting WITH FILLFACTOR =fillfactoras the only index option that applies to PRIMARY KEY or UNIQUE constraints is maintained for backward compatibility, but will not be documented in this manner in future releases. In SQL Server 2005, other index options can be specified in theindex_optionclause...
Scope of rows:all constraints Ordered byschema, table name, constraint type Sample results QueryColumnsRowsSample results Confused about your SQL Server database? You don't have to be. There's an easy way to understand the data in your databases. ...
名稱說明 Constraints 取得套用至物件的條件約束清單。 (繼承自 ISql90SpecifiesTable)。 Constraints 取得套用至物件的條件約束清單。 (繼承自 ISqlSpecifiesTable)。回頁首請參閱參考ISql100Table 介面Microsoft.Data.Schema.Sql.SchemaModel 命名空間中文(繁體) 您的隱私權選擇 佈景主題 管理Cookie 舊版本 部落格 ...
SQL NOT NULL 约束 NOT NULL 约束强制列不接受 NULL 值。 SQL UNIQUE 约束 SQL UNIQUE 约束 UNIQUE 约束唯一标识数据库表中的每条记录。 UNIQUE 和 PRIMARY KEY 约束均为列或列集合提供了唯一性的保证。 PRIMARY KEY 拥有自动定义的 UNIQUE 约束。 请注意,每个表可以有多个 UNIQUE 约束,但是每个表只能有一个 P...
TABLE_CONSTRAINTS (Transact-SQL) 發行項 2025/01/03 11 位參與者 意見反應 適用於:SQL Server Azure SQL 資料庫 Azure SQL 受控執行個體針對目前資料庫中的每個數據表條件約束,各傳回一個數據列。 這項資訊架構檢視會傳回目前使用者具有許可權之對象的相關信息。
Applies to: SQL Server 2008 (10.0.x) and later. Can be specified for FOREIGN KEY constraints and CHECK constraints. If this clause is specified for a constraint, the constraint is not enforced when replication agents perform insert, update, or delete operations. CONNECTION Specifies the pair of...
Linux 上的 SQL Server Azure 上的 SQL Azure Arc 资源 参考 Azure Data CLI azcli 数据库示例 错误和事件 事件类 本机接口 系统目录视图 系统兼容性视图 系统动态管理视图 系统函数 系统信息架构视图 概述 CHECK_CONSTRAINTS COLUMN_DOMAIN_USAGE COLUMN_PRIVILEGES ...
The following example returns all constraints in the database and orders the rows by CONSTRAINT_TYPE. SQL Copy USE AdventureWorks; GO SELECT * FROM INFORMATION_SCHEMA.TABLE_CONSTRAINTS ORDER BY CONSTRAINT_TYPE; See Also Reference System Views (Transact-SQL) Information Schema Views (Transact-SQL...
系统视图 (Transact-SQL) 目录视图 (Transact-SQL) 兼容性视图 (Transact-SQL) 数据库邮件视图 (Transact-SQL) 动态管理视图和函数 信息架构视图 (Transact-SQL) 信息架构视图 (Transact-SQL) CHECK_CONSTRAINTS (Transact-SQL) COLUMN_DOMAIN_USAGE (Transact-SQL) ...
However, whenCHECKandFOREIGN KEYconstraints are ignored, each ignored constraint on the table is marked asis_not_trustedin thesys.check_constraintsorsys.foreign_keyscatalog view after the operation. At some point, you should check the constraints on the whole table. If the table wasn't empty be...