数据类型

CREATE TABLE users (
   id text PRIMARY KEY,
   name text,
   favs map<text, text> // A map of text keys, and text values
);

INSERT INTO users (id, name, favs)
   VALUES ('jsmith', 'John Smith', { 'fruit' : 'Apple', 'band' : 'Beatles' });

// Replace the existing map entirely.
UPDATE users SET favs = { 'fruit' : 'Banana' } WHERE id = 'jsmith';

UPDATE users USING TTL 10 SET favs['color'] = 'green' WHERE id = 'jsmith';

CREATE TABLE images (
   name text PRIMARY KEY,
   owner text,
   tags set<text> // A set of text values
);

INSERT INTO images (name, owner, tags)
   VALUES ('cat.jpg', 'jsmith', { 'pet', 'cute' });

// Replace the existing set entirely
UPDATE images SET tags = { 'kitten', 'cat', 'lol' } WHERE name = 'cat.jpg';

CREATE TABLE plays (
    id text PRIMARY KEY,
    game text,
    players int,
    scores list<int> // A list of integers
)

INSERT INTO plays (id, game, players, scores)
           VALUES ('123-afde', 'quake', 3, [17, 4, 2]);

// Replace the existing list entirely
UPDATE plays SET scores = [ 3, 9, 4] WHERE id = '123-afde';

create_type_statement::= CREATE TYPE [ IF NOT EXISTS ] udt_name
        '(' field_definition ( ',' field_definition)* ')'
field_definition::= identifier cql_type

CREATE TYPE phone (
    country_code int,
    number text,
);

CREATE TYPE address (
    street text,
    city text,
    zip text,
    phones map<text, phone>
);

CREATE TABLE user (
    name text PRIMARY KEY,
    addresses map<text, frozen<address>>
);

udt_literal::= '{' identifier ':' term ( ',' identifier ':' term)* '}'

INSERT INTO user (name, addresses)
   VALUES ('z3 Pr3z1den7', {
     'home' : {
        street: '1600 Pennsylvania Ave NW',
        city: 'Washington',
        zip: '20500',
        phones: { 'cell' : { country_code: 1, number: '202 456-1111' },
                  'landline' : { country_code: 1, number: '...' } }
     },
     'work' : {
        street: '1600 Pennsylvania Ave NW',
        city: 'Washington',
        zip: '20500',
        phones: { 'fax' : { country_code: 1, number: '...' } }
     }
  }
);

alter_type_statement::= ALTER TYPE [ IF EXISTS ] udt_name alter_type_modification
alter_type_modification::= ADD [ IF NOT EXISTS ] field_definition
        | RENAME [ IF EXISTS ] identifier TO identifier (AND identifier TO identifier )*

ALTER TYPE address RENAME zip TO zipcode;

drop_type_statement::= DROP TYPE [ IF EXISTS ] udt_name