class Aws::DynamoDB::Types::ConditionCheck

@see docs.aws.amazon.com/goto/WebAPI/dynamodb-2012-08-10/ConditionCheck AWS API Documentation
@return [String]
and ALL_OLD.
‘ReturnValuesOnConditionCheckFailure`, the valid values are: NONE
if the `ConditionCheck` condition fails. For
Use `ReturnValuesOnConditionCheckFailure` to get the item attributes
@!attribute [rw] return_values_on_condition_check_failure
@return [Hash<String,Types::AttributeValue>]<br>: docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ConditionExpressions.html<br><br><br><br>DynamoDB Developer Guide*.
more information, see [Condition expressions] in the *Amazon
One or more values that can be substituted in an expression. For
@!attribute [rw] expression_attribute_values
@return [Hash<String,String>]<br>: docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ExpressionAttributeNames.html<br><br><br><br>names][1] in the *Amazon DynamoDB Developer Guide*.
expression. For more information, see [Expression attribute
One or more substitution tokens for attribute names in an
@!attribute [rw] expression_attribute_names
@return [String]<br>: docs.aws.amazon.com/amazondynamodb/latest/developerguide/Expressions.ConditionExpressions.html<br><br><br><br>the *Amazon DynamoDB Developer Guide*.
to succeed. For more information, see [Condition expressions] in
A condition that must be satisfied in order for a conditional update
@!attribute [rw] condition_expression
@return [String]
the Amazon Resource Name (ARN) of the table in this parameter.
Name of the table for the check item request. You can also provide
@!attribute [rw] table_name
@return [Hash<String,Types::AttributeValue>]
an attribute name and a value for that attribute.
The primary key of the item to be checked. Each element consists of
@!attribute [rw] key
check the condition of specific attributes of the item.
Represents a request to perform a check that an item exists or to