[KYLIN-2787] SUM(CASE WHEN...) does not supported

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: v1.6.0
• Component/s: REST Service
• Environment: jdk1.7.0_80, hbase-0.98.6-cdh5.3.9, apache-kylin-1.6.0-bin,
• Assignee: Jason Zhong
• Reporter: Shendandan
• Created: 14/Aug/17 01:41
• Updated: 02/Mar/20 15:04
• Resolved: 02/Mar/20 15:04

Description

Use a calculated field in tableau, but it can not work. There is an error in kylin.log:

{{[Kylin][ODBC 1.0(w) Driver]The REST query request failed, the error message is: Error while executing SQL "SELECT SUM((CASE WHEN (( EXTRACT(YEAR FROM a.column1) = 2017) AND ( EXTRACT(MONTH FROM a.column1) = 6)) THEN a.column2 ELSE 0 END)) AS "sum_Calculation_FIIAIBABGCIFEFEJ_ok" FROM table a LEFT JOIN table b ON (a. column3= b.column1) LEFT JOIN table c ON (a. column4= c.column1) LEFT JOIN table d ON (a.column5 = d.column1) LEFT JOIN table e ON (a.column6 = e.column1) ": Can't find any realization. Please confirm with providers. SQL digest: fact table
a ,group by [],filter on [],with aggregates[FunctionDesc [expression=SUM, parameter=null, returnType=null]].}}