srggrs commented on issue #4740: Add extraction function support for Druid queries URL: https://github.com/apache/incubator-superset/pull/4740#issuecomment-422657855 Guys thank you for this post! I tried to use the extraction function as per below: `{` ` "type" : "extraction",` ` "dimension" : "myid",` ` "outputName" : "myname",` ` "outputType" : "STRING",` ` "extractionFn" : {` ` "type" : "lookup",` ` "dimension" : "myid",` ` "outputName" : "myname",` ` "retainMissingValue" : false,` ` "replaceMissingValueWith" : "missing",` ` "name" : "myid"` ` }` `}` but I get an error: `HTTP Error 500: Internal Server Error Druid Error` I'm not sure what I'm doing wrong. I implemented the druid lookup as a globally cached lookup. JSON below it works for the gropby but not filtering though. `{` ` "type" : "lookup",` ` "dimension" : "myid",` ` "outputName" : "myname",` ` "retainMissingValue" : false,` ` "replaceMissingValueWith" : "missing",` ` "name" : "myid"` `}`
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