To create a constraint in SQL, you need to use the CONSTRAINT keyword, followed by the name of the constraint and the type of the constraint.

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.

To create a custom route constraint, ... ETL Microsoft Azure SQL. video "Fearless concurrency" in future versions of free-threaded Python. Jun 26, 2025 5 mins. Python. video.

I want to create a check constraint,eg gender CREATE TABLE `test1` ( `id` int(11) NOT NULL AUTO_INCREMENT , `gender` varchar(6) ... I don't want use migrationBuilder.Sql() create check constraints, so ...

How to create composite UNIQUE constraint with nullable columns? #5191. Copy link. Labels. driver: postgres question. Description. Nicoowr. opened on Dec 6, 2019. Issue body actions. Issue type: [x] ...