WITH CLUSTERING ORDER BY (series_time DESC) PRIMARY KEY ((series_id, color), store, series_time) PRIMARY KEY ((employee_id, color), store, location)ĪND read_repair_chance = 1.0 AND replicate_on_write = 'true'Įmployee_name bigint, color text, store varint, series_time timestamp, PRIMARY KEY ((genre_id, color), store, location))Įxample of TABLE OPTIONS settings WITH clauseĬREATE TABLE employees (employee_id uuid,Įmployee_name bigint, color text, store varint, location text, Genre_name bigint, color text, store varint, location text, You can use the WITH clause to specify the attributes of tables listed in CQL 3 table storage properties.ĬREATE TABLE products (product_id varchar PRIMARY KEY,Įxample of using composite partition keys The only schema information that must be defined for a table is the primary key and its associated data type. You can also use the alias CREATE COLUMNFAMILY. A directive is either: COMPACT STORAGE or CLUSTERING ORDER followed by the clustering order specification PROPERTY is one of the CQL table storage options or a directive. | ((column_name1, column_name2), column_name3, column_namne4. | ( column_name1, column_name2, column_name3. You can also use the alias DROP SCHEMA.ĬREATE TABLE table_name ( column_definition, column_definition. VALUES ('Crowton', ĭROP KEYSPACE removes the keyspace and all of its Tables and data contained in the keyspace. VALUES ( value, value … ) USING option AND optionĪn INSERT writes one or more columns to a record in a Cassandra table atomically and in isolation. INSERT INTO table_name ( identifier, identifier … ) The DDL below is specific to Cassandra in Aqua Data Studio. This is similar to MySQL syntax where you can specify:ĭata Definition Language (DDL) is a syntax used to define data structures, especially database schemas. Where the database name is jenny and the collection name is testArray The SELECT clause supports an AS section, which defines an alias for the field, literal, or functional expression. Expressions (expr1, etc.) in the SELECT clause can be field names, literals or functional expressions that operate on fields or literals. The SELECT clause indicates the set of values to be returned by a query. The DML below is specific to Cassandra in Aqua Data Studio. In this document, keywords such as SELECT are capitalized for illustration purposes.ĭata manipulation language (DML) is a family of syntax elements used to insert, delete and update data in a database. The Cassandra Query Language (CQL) is designed to allow the use of SQL-like statements to query the tables of Cassandra.Īll Cassandra queries are SELECT statements of this form: SELECT This document details Aqua Data Studio's CQL syntax and functions. When connecting to Cassandra, Aqua Data Studio supports a subset of the SQL-92 standard. Cassandra queries are written using a variation of the standard SQL SELECT statement.
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