Access data using CQL
Common ways to access data using CQL are:
-
CQL shell (cqlsh): A Python-based command line shell to access the database and issue CQL (Cassandra Query Language) commands
In a production database, executing statements programmatically (with a driver) is more practical than using
cqlsh, butcqlshcan be a convenient way to test statements in development. -
DataStax-compatible drivers: The primary resource for application developers to connect to database clusters programmatically
|
Schema changes, which involve CREATE, ALTER, and DROP statements, are not safe for concurrent use. Performing more than one change in flight has a high probability of causing irreconcilable conflicts, with nodes in the cluster using different schema "versions" indefinitely. |
