May 2020
Beginner
564 pages
14h 9m
English
Content preview from Learn SQL Database Programming
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Syntax for using generated columns
To create a virtual generated column, you can use the following sample syntax:
ALTER TABLE tablename ADD COLUMN columnname datatype GENERATED ALWAYS AS (expression) AFTER column;
To create a stored generated column, you can use the following sample syntax:
ALTER TABLE tablename ADD COLUMN columnname datatype GENERATED ALWAYS AS (expression) STORED AFTER column;
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