i also getting error like this
An error occurred while communicating with the Other Databases (JDBC) data source 'WelcomeEffortsReport'
Bad Connection: Tableau could not connect to the data source.
Error Code: FAB9A2C5
Failed to execute query : SELECT WelcomeEffortsReport.TeamMate AS Calculation_1096063618921959424,
SUM(WelcomeEffortsReport.Reachedpt) AS TEMP_Calculation_1096063618933399555__238153781__0_,
COUNT(WelcomeEffortsReport.CallMade) AS TEMP_Calculation_1096063618933399555__4088127136__0_,
SUM(WelcomeEffortsReport.ReadyForOnProgram) AS TEMP_Calculation_1096063618934386692__107542655__0_,
SUM(WelcomeEffortsReport.TrainingProvided) AS TEMP_Calculation_1096063618934726661__2367264121__0_,
SUM(WelcomeEffortsReport.ReadingTaken) AS TEMP_Calculation_1096063618934882310__306705901__0_,
SUM(WelcomeEffortsReport.DidnotReachPt) AS sum_DidnotReachPt_ok
FROM WelcomeEffortsReport
WHERE (CAST(CAST( AS DATE) AS TIMESTAMP) = {fn TIMESTAMPADD(SQL_TSI_WEEK,-1,)})
GROUP BY 1 LIMIT 2147483647
SELECT WelcomeEffortsReport.TeamMate AS Calculation_1096063618921959424,
SUM(WelcomeEffortsReport.Reachedpt) AS TEMP_Calculation_1096063618933399555__238153781__0_,
COUNT(WelcomeEffortsReport.CallMade) AS TEMP_Calculation_1096063618933399555__4088127136__0_,
SUM(WelcomeEffortsReport.ReadyForOnProgram) AS TEMP_Calculation_1096063618934386692__107542655__0_,
SUM(WelcomeEffortsReport.TrainingProvided) AS TEMP_Calculation_1096063618934726661__2367264121__0_,
SUM(WelcomeEffortsReport.ReadingTaken) AS TEMP_Calculation_1096063618934882310__306705901__0_,
SUM(WelcomeEffortsReport.DidnotReachPt) AS sum_DidnotReachPt_ok
FROM WelcomeEffortsReport
WHERE (CAST(CAST( AS DATE) AS TIMESTAMP) = {fn TIMESTAMPADD(SQL_TSI_WEEK,-1,)})
GROUP BY 1