Data validation is a critical part of your application to ensure your data meets the requirements developed by your business analysts.
There are a number of different processes that can be used to make sure your data validates against your business rules.
presence of table fields, function parameters, constants, etc.
We believe that the best and only possible validator is the database server itself.
In this article, Im going to discuss how you can use database check constraints to validate your data within the SQL Server database engine.
Since the VALIDATE statement is designed to be specified in conjunction with a SELECT statement, users are better able to control what code is checked for troubleshooting and debugging purposes.You may need a full SQL Parser to do such a vendor-specific offline SQL syntax check.One of the key goals when building applications is to make sure the data you enter into the database meets all your business rules.The SAS log displays the validity of the query syntax as is the case in the example below.SQL Code The next VALIDATE statement example illustrates what happens when the syntax checker discovers an error in an SQL query.