Description

Represents the selection criteria for a Query or Scan operation:

For a Query operation, Condition is used for specifying the KeyConditions

to use when querying a table or an index. For KeyConditions, only the following comparison operators are supported:

EQ | LE | LT | GE | GT | BEGINS_WITH | BETWEEN

Condition is also used in a QueryFilter, which evaluates the query results

and returns only the desired values.

For a Scan operation, Condition is used in a ScanFilter, which evaluates

the scan results and returns only the desired values.