ANTLR4-based parser for Cassandra Query Language (CQL).

This parser supports CQL3 syntax as used by:

• Apache Cassandra
• ScyllaDB
• Amazon Keyspaces
• DataStax Astra

import "github.com/bytebase/parser/cql"

// Parse a CQL statement
tree, err := cql.ParseCQL("SELECT * FROM users WHERE id = 123;")
if err != nil {
    // Handle parsing error
    log.Fatal(err)
}

The grammar files are from the official ANTLR grammars repository:

• https://github.com/antlr/grammars-v4/tree/master/cql3

make build  # Generate Go files from ANTLR grammars
make test   # Run tests
make clean  # Clean generated files

The parser is tested against 38 official CQL example files covering:

• DDL statements (CREATE, ALTER, DROP for keyspaces, tables, indexes, etc.)
• DML statements (INSERT, UPDATE, DELETE, SELECT)
• DCL statements (GRANT, REVOKE, LIST PERMISSIONS)
• Batch operations
• User-defined types, functions, and aggregates
• Materialized views

Average parsing time: ~14 microseconds per statement