Identity is not a column type but a property you can set on an integer column. (only when creating the column, though).
Once set, SQL Server will automatically populate the identity column with auto-generated values any time you insert rows to the table.
Basically, it's like a serial column in PostgreSQL or an auto_increment column in Oracle / MySql.
serial
auto_increment
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Identity is not a column type but a property you can set on an integer column. (only when creating the column, though).
Once set, SQL Server will automatically populate the identity column with auto-generated values any time you insert rows to the table.
Basically, it's like a
serialcolumn in PostgreSQL or anauto_incrementcolumn in Oracle / MySql.