在下面的示例中,我能够使查询处理一个例外。当我在q
步骤中使用source.query
代替RxSqlServerData
时,我收到错误rxCompleteClusterJob Execution halted
。
第一个目标是使用存储过程代替较长的查询。这可能吗?
第二个目标是在存储过程中创建并调用#TEMPORARY
表。我想知道这是否可行?
library (RODBC)
library (RevoScaleR)
sqlConnString <- "Driver=SQL Server;Server=SAMPLE_SERVER; Database=SAMPLE_DATABASE;Trusted_Connection=True"
sqlWait <- TRUE
sqlConsoleOutput <- FALSE
sql_share_directory <- paste("D:\\RWork\\AllShare\\", Sys.getenv("USERNAME"), sep = "")
sqlCompute <- RxInSqlServer(connectionString = sqlConnString, wait = sqlWait, consoleOutput = sqlConsoleOutput)
rxSetComputeContext(sqlCompute)
#This Sample Query Works
source.query <- paste("SELECT CASE WHEN [Order Date Key] = [Picked Date Key]",
"THEN 1 ELSE 0 END AS SameDayFulfillment,",
"[City Key] AS city, [STOCK ITEM KEY] AS item,",
"[PICKER KEY] AS picker, [QUANTITY] AS quantity",
"FROM [WideWorldImportersDW].[FACT].[ORDER]",
"WHERE [WWI ORDER ID] >= 63968")
#This Query Does Not
q <- paste("EXEC [dbo].[SAMPLE_STORED_PROCEDURE]")
inDataSource <- RxSqlServerData(sqlQuery=q, connectionString=sqlConnString, rowsPerRead=500)
order.logit.rx <- rxLogit(SameDayFulfillment ~ city + item + picker + quantity, data = inDataSource)
order.logit.rx
答案 0 :(得分:0)
目前,只允许T-SQL SELECT语句作为输入数据集,而不是存储过程。