SQL
`RESET VARIABLE`
The `RESET VARIABLE` statement unsets a variable.  
```sql
SET VARIABLE my_var = 30;
RESET VARIABLE my_var;
SELECT getvariable('my_var') AS my_var;
```  
| my_var |
|--------|
| NULL   |  
#### Syntax {#docs:sql:statements:set_variable::syntax}  
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