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> Mirror of <https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/regexp-replace.html> (Salesforce, Data 360 Query Guide), read 2026-10-23. Salesforce's own page is the authority; this copy exists because that site refuses non-browser readers.

## `REGEXP_REPLACE`

**Applies to:** ✅ Data 360 SQL ✅ Tableau Hyper API

Replaces substrings matching a regular expression pattern with a replacement string.

*   `<string>`: The source string.
*   `<pattern>`: The regular expression pattern to match.
*   `<replacement>`: The replacement string.

*   `flags`: A string of option flags that modify matching behavior. Flags can be combined (for example, `'gi'`).

| Flag | Description |
| --- | --- |
| `g` | Global replacement — replace all matches, not just the first |
| `i` | Case-insensitive matching |

Returns a text value with matching substrings replaced.

*   The replacement string can contain `\N` (where N is 1-9) to insert captured groups from the pattern, or `\0` to insert the entire match. Use `\\` for a literal backslash.
*   By default, replaces only the first occurrence. Use the `g` flag for global replacement.
*   Case-insensitive matching can also come from the query’s collation; the `i` flag applies regardless of collation.
*   For detailed regex syntax, see [Regular Expression Syntax](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/string-matching.html#regular-expression-syntax).

Replace digits with a placeholder.

Returns `'fooXbar'`.

Use captured groups in the replacement.

Returns `'Smith, John'`.

Remove matching patterns by replacing with empty string.

Returns `'Hello World'` with multiple spaces reduced to one.

Replace all occurrences using the `g` flag.

Returns `'a#b#c#'`.

Use the `i` flag for case-insensitive matching.

Returns `'ThM'`.

*   [REPLACE](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/replace.html)
*   [REGEXP_SUBSTR](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/regexp-substr.html)
*   [Regular Expression Syntax](https://developer.salesforce.com/docs/data/data-cloud-query-guide/references/dc-sql-reference/string-matching.html#regular-expression-syntax)


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