Introduction to CQL
- Accessing data using CQL
Common ways to access data include cqlsh, drivers, and DataStax Studio.
- Understanding the CQL command syntax
Basic rules and limitations for writing CQL statements; including case, valid characters, escaping characters, keyspace qualifiers, commenting, keywords, and exponential notation.
- About system keyspace tables
Provides details about database objects and cluster configuration in the system keyspace tables. Modifying the system keyspace is not supported; modification attempts generate an error message.
- Virtual keyspaces and tables
Provides details about virtual keyspaces and tables.
- Virtual tables for SAI indexes and SSTables
Provides details about virtual tables for Storage Attached Indexing (SAI) indexes and SSTables.