apache
[SQL] Alter Catalog and Table statements
Addresses #35637
Adds the following features:
Modify a catalog's properties
ALTER CATALOG my_catalog
[ RESET ('prop1', 'prop2', ...) ]
[ SET ('prop5'='val5', 'prop6'='val6', ...) ]
Modify a table's properties, schema, or partition spec
ALTER TABLE my_table
[ DROP COLUMNS (col1, col2, ...) ]
[ ADD COLUMNS (col5 VARCHAR COMMENT 'some-comment', col6 INTEGER, ...) ]
[ DROP PARTITIONS ('col1', 'month(col4)', ...) ]
[ ADD PARTITIONS ('truncate(col5, 3)', 'col4', ...) ]
[ RESET ('prop1', 'prop2', ...) ]
[ SET ('prop5'='val5', 'prop6'='val6', ...) ]
Limitations:
- Does not support adding a required/non-null column to an Iceberg table (introduced in V3). Iceberg requires such a column to specify a default value (so that existing rows can adapt that value to their new column), but Beam Schemas do not support a "default value"
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Assigning reviewers:
R: @kennknowles for label java.
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