---
{
    "title": "not like",
    "language": "en"
}
---

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# not like
## description
### syntax

'BOOLEAN not like(VARCHAR str, VARCHAR pattern)'

Perform fuzzy matching on the string str, return false if it matches, and return true if it doesn't match.

like match/fuzzy match, will be used in combination with % and _.

'a'   // Precise matching, the same effect as `=`.
'%a'  // data ending with a
'a%'  // data starting with a
'%a%' // data containing a
'_a_' // Three digits and the middle letter is a
'_a'  // Two digits and the ending letter is a
'a_'  // Two digits and the initial letter is a

## example

```
// Return data that does not contain a in the k1 string
mysql> select k1 from test where k1 not like '%a%';
+-------+
| k1    |
+-------+
| b     |
| bb    |
+-------+

// Return the data that is not equal to a in the k1 string
mysql> select k1 from test where k1 not like 'a';
+-------+
| k1    |
+-------+
| bab   |
| b     |
+-------+
```

## keyword
LIKE, NOT, NOT LIKE