How do I create a rule in SQL Server?

How do you add a rule in SQL?

A rule can be created only in the current database. After you create a rule, execute sp_bindrule to bind the rule to a column or to alias data type. A rule must be compatible with the column data type. For example, "@value LIKE A%" cannot be used as a rule for a numeric column.

Which are the rules of SQL?

10 Rules for a Better SQL SchemaOnly Use Lowercase Letters, Numbers, and Underscores. ... Use Simple, Descriptive Column Names. ... Use Simple, Descriptive Table Names. ... Have an Integer Primary Key. ... Be Consistent with Foreign Keys. ... Store Datetimes as Datetimes. ... UTC, Always UTC. ... Have One Source of Truth.

How many rules does SQL have?

Codd's twelve rules are a set of thirteen rules (numbered zero to twelve) proposed by Edgar F. Codd, a pioneer of the relational model for databases, designed to define what is required from a database management system in order for it to be considered relational, i.e., a relational database management system (RDBMS).

What is the use of [] in SQL?

The brackets are required if you use keywords or special chars in the column names or identifiers. You could name a column [First Name] (with a space) – but then you'd need to use brackets every time you referred to that column. The newer tools add them everywhere just in case or for consistency.