# Literals

Discover the different literals available in CQL.

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Use the summary below to quickly jump to a specific topic:

- [Null literal](/reference/cql/expressions/literals/null): Learn how to represent the lack of a value.
- [Boolean literal](/reference/cql/expressions/literals/boolean): Learn how to represent binary values, such as true/false, yes/no, or on/off.
- [Number literal](/reference/cql/expressions/literals/number): Learn how to represent integers, decimals, floats, and ordinal numbers.
- [String literal](/reference/cql/expressions/literals/string): Learn how to represent text values.
- [Regex literal](/reference/cql/expressions/literals/regex): Learn how to represent regular expressions for pattern matching.
- [Collection literal](/reference/cql/expressions/literals/collection): Learn how to represent lists, sets, and maps.