docs/sql-manual/sql-functions/string-functions/split-by-regexp.md

---
{
    "title": "SPLIT_BY_REGEXP",
    "language": "en"
}
---

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## split_by_regexp

### description

#### Syntax

`ARRAY<STRING> split_by_regexp(STRING str, STRING pattern[, int max_limit])`

Split the string 'str' based on the input regular expression 'pattern', with the option to retain up to the maximum number 'max_imit'. By default, all strings will be retained, and a split string array will be returned.

#### Arguments
`Str ` - The string that needs to be split Type: `String`
`Pattern `- Regular expression Type: `String`
`Max_imit ` - Reserved number, optional parameter Type: `Int`


### example

```
mysql [test_query_qa]>select split_by_regexp('abcde',"");
+------------------------------+
| split_by_regexp('abcde', '') |
+------------------------------+
| ["a", "b", "c", "d", "e"]    |
+------------------------------+
1 row in set (0.02 sec)

mysql [test_query_qa]>select split_by_regexp('a12bc23de345f',"\\d+");
+-----------------------------------------+
| split_by_regexp('a12bc23de345f', '\d+') |
+-----------------------------------------+
| ["a", "bc", "de", "f"]                  |
+-----------------------------------------+
1 row in set (0.01 sec)
```
### keywords

SPLIT_BY_REGEXP,SPLIT