CompareFunction

DynamoDb condition function

• a = b — true if the attribute a is equal to the value b
• a < b — true if a is less than b
• a <= b — true if a is less than or equal to b
• a > b — true if a is greater than b
• a >= b — true if a is greater than or equal to b
• a BETWEEN b AND c — true if a is greater than or equal to b, and less than or equal to c.

The following function is also supported: begins_with (a, substr) — true if the value of attribute a begins with a particular substring.