Function attribute_type

attribute_type(type: "S" | "N" | "B" | "SS" | "NS" | "BS" | "M" | "L" | "NULL" | "BOOL" | "$unknown"): FunctionComparison
Check if an attribute is of a particular data type (attribute_type function).

Example
```
df.scan('movies', { rating: attribute_type('N') })
```
Returns
An object describing the comparison
Parameters
- type: "S" | "N" | "B" | "SS" | "NS" | "BS" | "M" | "L" | "NULL" | "BOOL" | "$unknown"
  
  The expected type of the attribute
Returns FunctionComparison
- Defined in src/helpers.ts:172