The ADD COLUMN docs currently only call out that you can't add a column with a foreign key constraint. All other constraints can be defined while adding a column. I can update the docs to reflect the ...

Learn what is the syntax for creating a check constraint in SQL and how to use it to validate your data and enforce data integrity rules on your tables.

PostgreSQL allows you to enforce all kinds of rules about the value of a column or the relationship between two columns. These rules are defined with check constraints. ActiveRecord's migration DSL ...

Constraints in sql are used to define rules for the table and columns in a database and also make sure that data are accurate and trusted in the database. constraints are responsible for the ...

SQL Server 2000I need to change the collation for a database from case senstitive to case insensitive. ALTER DATABASE COLLATE SQL_Latin1_General_CI_AS When I try to so, I get a whole slew of ...