Cascading referential integrity constraints are foreign key constraints that tell SQL Server to perform certain actions when a primary key field in a primary key-foreign key relationship is ...

Contribute to codophilic/Learn-SQL-Server-Queries development by creating an account on GitHub. Skip to content. Navigation Menu ... create table gender( id int primary key, name varchar(15) ); alter ...

For example: CREATE TABLE tab ( a INT, b STRING ); ALTER TABLE tab ADD CONSTRAINT key_a_b UNIQU... Skip to content. Navigation Menu Toggle navigation. Sign in Appearance settings. Product GitHub ...

Complex SQL queries are widely used today, but it is rather difficult to check if a complex query has been written correctly. Formal verification based on comparing a specification with an ...