Add columns at the end of the table - Amazon Athena
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Add columns at the end of the table

If you create tables in any of the formats that Athena supports, such as Parquet, ORC, Avro, JSON, CSV, and TSV, you can use the ALTER TABLE ADD COLUMNS statement to add columns after existing columns but before partition columns.

The following example adds a comment column at the end of the orders_parquet table before any partition columns: 

ALTER TABLE orders_parquet ADD COLUMNS (comment string)
Note

To see a new table column in the Athena Query Editor after you run ALTER TABLE ADD COLUMNS, manually refresh the table list in the editor, and then expand the table again.