SQL Server Code Example

Add Default to Existing Column

A practical SQL Server and Azure SQL code example for Add Default to Existing Column.

Example and Notes

Use this SQL Server example as a starting point for development, troubleshooting, reporting, or maintenance work. Review it against your schema, data volume, permissions, and SQL Server version before using it in production.

Sometimes you setup a field and later determine you need a default value on that field. For example, you may have a date field and you want the default value to be set to the current date when a new record is created. This sample script will show you how to accomplish this.

ALTER TABLE dbo.yourTable
ADD CONSTRAINT def_yourColumn DEFAULT GETDATE() FOR yourColumn

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Readable Example

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Practical Context

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