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
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. ...
兼容性视图 (Transact-SQL) 动态管理视图和函数 (Transact-SQL) 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) COLUMN_PRIVILEGES (Transact-SQL) COLUMNS (Transact-SQL) CONSTRAINT_COLUMN_USAGE (Transact-SQL) CONSTRAINT_TABLE_...
The semantics of foreign key constraints (CHECK or NOCHECK) are always preserved when using the offline approach. With the online approach (requires the SqlServer PowerShell module version 21.x or later), the operation of copying and encrypting, decrypting, or re-encrypting the data...
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. ...
The Database Engine does not enforce an order for specifying DEFAULT, IDENTITY, ROWGUIDCOL, or column constraints in a column definition.ExamplesFor examples, see ALTER TABLE (Transact-SQL).See AlsoReferenceALTER TABLE (Transact-SQL)Other Resources...
SQL Server Unique constraint for values in different columnI agree 100% with the above comments ...
Using SQL to Implement a Relational Design NOT NULL Constraints The values in primary key columns must be unique and not null. In addition, there may be other columns for which you want to require a value. You can specify such columns by adding NOT NULL after the column declaration. Since...
The IDSSECURITY LABEL column cannot have any explicit single-column constraints, and it cannot be part of multiple-column referential or check constraints. The IDSSECURITYLABEL column cannot be encrypted. If the table is secured with both row-level and column-level protection, the default or ...
unique key. This is a shortcut for the UniqueConstraint annotation at the table level and is useful for when the unique key constraint is only a single field. This constraint applies in addition to any constraint entailed by primary key mapping and to constraints specified at the table level....