# COALESCE
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```
COALESCE (
      <value-expression>
      {,<value-expression>}... )
```

The COALESCE function takes a list of expressions (all of which must be of the same type) and returns the first non-null argument from the list. If all of the expressions are null, COALESCE returns null.

## Examples
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| Expression | Result | 
| --- | --- | 
| COALESCE('chair') | chair | 
| COALESCE('chair', null, 'sofa') | chair | 
| COALESCE(null, null, 'sofa') | sofa | 
| COALESCE(null, 2, 5) | 2 |