getOrderDetailsByOrderId基表QueryPK=orderId getProductByOrderId基表QueryPK=orderIdSK begins_with "p#" getInvoiceByOrderId基表QueryPK=orderIdSK begins_with "i#" getShipmentByOrderId基表QueryPK=orderIdSK begins_with "sh#" getOrderByProductIdForDateRangeGSI1查询PK=productIddate1 和 date2 之...
getOrderDetailsByOrderId BASE 資料表 Query PK=orderId getProductByOrderId BASE 資料表 Query PK=orderId SK begins_with "p#" getInvoiceByOrderId BASE 資料表 Query PK=orderId SK begins_with "i#" getShipmentByOrderId BASE 資料表 Query PK=orderId SK begins_with "sh#" getOrderByProductId...
在这个case中,Lineorder是一张大表,采用复杂查询的模式以后,Query执行时间从17秒优化到了1.7秒。...事实上,优化器对复杂查询的性能提升也非常大,通过一些RBO的规则,例如常见的谓词下推、相关子查询的处理等,可以极大提升SQL的执行效率。 3.1K20点击加载更多...
希望达成类似SELECT * FROM Game WHERE Opponent = 'Bob' ORDER BY DATE DESC FILTER ON Status='PENDING'的查询, 如果Bob 的数据有上千条,但 IN_PROGRESS 的数量只有一条,那使用 Query + Filter 的结果是需要查到这千条数据,再从中过滤出需要的数据来。 但如果使用组合键StatusDate = Status + Date, 如...
相关的python在这里: 'GET': lambda dynamo, x: dynamo.query(**x), table = dynamodb.Table('Tes 浏览0提问于2019-03-16得票数 0 回答已采纳 2回答 如何将dynemodb用于管腔或胎盘 、、、 我已经执行了以下步骤,并将我的访问密钥和密钥添加到.env文件中我添加了$app->register(Aws\Laravel\AwsService...
response = self.table.query( KeyConditionExpression=Key('user_id').eq(user_id) ) order_total = 0 order_amount = 0 discount_amount = 0 for item in response['Items']: order_total += item['order_total'] order_amount += item['total_amount'] ...
You can limit the number of items returned by specifying thelimitparameter. This applies to thequeryfunctions as well as thegetAllItemsfunction. The function will handle pagination internally up until the limit is reached. constuserPurchases=awaitqueryItems<Purchase>({dynamoDb:dynamo,table:'purchase...
_order_amount) + '_' + str(month_discount_amount)) class LatestYearOrderSumFunction(ScalarFunction): def eval(user_id): dynamodb = boto3.resource('dynamodb',region_name='us-east-1') table_name = "order_sum_monthly" table = dynamodb.Table(table_name) response = self.table.query( ...
在导航窗格中,选择Query Editor(查询编辑器)。 如果之前未连接到过此数据库,则会打开Connect to database(连接到数据库)页面。 对于Database instance or cluster(数据库实例或集群),请选择您的数据库。 对于Database username(数据库用户名),请选择Connect with a S...
createQuery({ key: () => Promise.resolve(crypto.randomBytes(32)), client: documentClient, });To create a paginator over a scan operation, use createScan.const paginateScan = Paginator.createScan({ key: () => Promise.resolve(crypto.randomBytes(32)), client: documentClient, });...