# String modifiers

Discover the available modifiers to manipulate string values in CQL.

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

- [Change-case modifier](/reference/cql/expressions/modifiers/string/change-case): Learn how to change the case of string values.
- [Replace modifier](/reference/cql/expressions/modifiers/string/replace): Learn how to replace substrings or patterns in a value.