# Using the SIZE function with PartiQL for amazon DynamoDB
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Returns a number representing an attribute's size in bytes. The following are valid data types for use with size. For more information, see the DynamoDB [size](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html#Expressions.OperatorsAndFunctions.Functions) function.

## Syntax
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```
size( path)
```

## Arguments
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*path*  
(Required) The attribute name or document path.   
For supported types, see DynamoDB [size](https://docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.OperatorsAndFunctions.html#Expressions.OperatorsAndFunctions.Functions) function.

## Return type
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`int`

## Examples
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```
 SELECT * FROM "Orders" WHERE "OrderID"=1 AND size("Image") >300
```