DROP PROJECTION

Marks a projection to drop from the catalog so it is unavailable to user queries.

Syntax

DROP PROJECTION [ IF EXISTS ] { [[database.]schema.]projection[,…] } [ RESTRICT | CASCADE ]

`IF EXISTS`	Specifies not to report an error if the projection to drop does not exist. Use this clause in SQL scripts to avoid errors on dropping non-existent objects before attempting to create them.
`[database.]schema`	Specifies a schema, by default `public`. If schema is any schema other than `public`, you must supply the schema name. For example: myschema.thisDbObject If you specify a database, it must be the current database.
`projection`	Specifies a projection to drop: If the projection is unsegmented, all projection replicas in the database cluster are dropped. If the projection is segmented, drop all buddy projections by specifying the projection base name. You can also specify the name of a specific buddy projection as long as dropping it so does not violate system K-safety. See Projection Naming for projection name conventions.
`RESTRICT \| CASCADE`	Specifies whether to drop the projection when it contains objects: `RESTRICT` (default): Drop the projection only if it contains no objects. `CASCADE`: Drop the projection even if it contains objects.

Superuser, or owner of the anchor table

The following restrictions apply to dropping a projection:

The projection cannot be the anchor table's superprojection.
You cannot drop a buddy projection if doing so violates system K-safety.
Another projection must be available to enforce the same primary or unique key constraint.