我在表格的每个项目中都设置了一个字符串。例如,
{
Title = "Book 101 Title"
ISBN = "111-1111111111"
Authors = "Author 1"
Price = -2
Dimensions = "8.5 x 11.0 x 0.5"
PageCount = 500
Color = [ "Red", "Black" ]
ProductCategory = "Book"
}
{
Title = "Book 102 Title"
ISBN = "222-222222222"
Authors = "Author 2"
Price = -8
Dimensions = "8.5 x 11.0 x 0.5"
PageCount = 700
Color = [ "Red", "Green" ]
ProductCategory = "Book"
}
使用 dynamoDB php sdk,我想获得“红色”颜色的项目。我这样试试。
$response = $client->query(array(
"TableName" => $tablename,
"KeyConditions" => array(
"ComparisonOperator" => ComparisonOperator::CONTAINS,
'Color' => array(
'AttributeValueList' => array(
array(Type::STRING_SET => array("Red"))
),
)
));
但是我遇到了这样的错误。
ValidationException: One or more parameter values were invalid: ComparisonOperator CONTAINS is not valid for SS AttributeValue type
最佳答案
我从 aws 开发者论坛找到了解决方案 here .不能将 CONTAINS
与 query
一起使用。必须与 scan
一起使用。就像那样。
$response = $client->scan(array(
"TableName" => $tablename,
"KeyConditions" => array(
"ComparisonOperator" => ComparisonOperator::CONTAINS,
'Color' => array(
'AttributeValueList' => array(
array(Type::STRING => "Red")
),
)
));
关于php - 如何检查dynamodb中字符串集中是否存在字符串,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/24180853/