CQL Commands
This section describes the Cassandra Query Language (CQL) commands supported by the Apache Cassandra database.
- ALTER KEYSPACE
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Changes keyspace replication strategy and enables or disables commit log.
- ALTER MATERIALIZED VIEW
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Changes the table properties of a materialized view.
- ALTER ROLE
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Changes password and sets superuser or login options.
- ALTER TABLE
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Modifies the columns and properties of a table, or modify
- ALTER TYPE
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Modifies an existing user-defined type (UDT).
- ALTER USER (Deprecated)
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Deprecated. Alter existing user options.
- BATCH
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Applies multiple data modification language (DML) statements with atomicity and/or in isolation.
- CREATE AGGREGATE
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Defines a user-defined aggregate.
- CREATE CUSTOM INDEX
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Creates a storage-attached index.
- CREATE FUNCTION
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Creates custom function to execute user provided code.
- CREATE INDEX
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Defines a new index for a single column of a table.
- CREATE KEYSPACE
- CREATE MATERIALIZED VIEW
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Optimizes read requests and eliminates the need for multiple write requests by duplicating data from a base table.
- CREATE ROLE
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Creates a cluster wide database object used for access control.
- CREATE TABLE
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Creates a new table.
- CREATE TYPE
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Creates a custom data type in the keyspace that contains one or more fields of related information.
- CREATE USER (Deprecated)
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Deprecated. Creates a new user.
- DELETE
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Removes data from one or more columns or removes the entire row
- DROP AGGREGATE
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Deletes a user-defined aggregate from a keyspace.
- DROP FUNCTION
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Deletes a user-defined function (UDF) from a keyspace.
- DROP INDEX
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Removes an index from a table.
- DROP KEYSPACE
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Removes the keyspace.
- DROP MATERIALIZED VIEW
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Removes the named materialized view.
- DROP ROLE
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Removes a role.
- DROP TABLE
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Removes the table.
- DROP TYPE
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Drop a user-defined type.
- DROP USER (Deprecated)
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Removes a user.
- GRANT
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Allow access to database resources.
- INSERT
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Inserts an entire row or upserts data into existing rows.
- LIST PERMISSIONS
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Lists permissions on resources.
- LIST ROLES
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Lists roles and shows superuser and login status.
- LIST USERS (Deprecated)
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Lists existing internal authentication users and their superuser status.
- RESTRICT
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Denies the permission on a resource, even if the role is directly granted or inherits permissions.
- RESTRICT ROWS
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Configures the column used for row-level access control.
- REVOKE
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Removes privileges on database objects from roles.
- SELECT
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Returns data from a table.
- TRUNCATE
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Removes all data from a table.
- UNRESTRICT
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Removes a restriction from a role.
- UNRESTRICT ROWS
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Removes the column definition for row-level access control.
- UPDATE
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Modifies one or more column values to a row in a table.
- USE
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Selects the keyspace for the current client session.
