UNIQUE | PRIMARY KEY
Description
Specifies that the column can contain only unique values. In Snowflake, both UNIQUE and PRIMARY KEY are used to document and structure data, but they do not have active data validation functionality in the sense that you might expect in other database systems that enforce these restrictions at the storage level.
Click here to navigate to the Amazon Redshift docs page for this syntax.
In Snowflake, unique, primary and foreign keys are used for documentation and do not enforce constraints or uniqueness. They help describe table relationships but don't impact data integrity or performance.
Grammar Syntax
Sample Source Patterns
RedShift Input Code:
IN -> Redshift_01.sql
Snowflake Output Code:
OUT -> Redshift_01.sql
Related EWIs
There are no known issues.
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