Cloudera Impala Connector throwing Error when using COUNT(DISTINCT) aggregate functions with multiple columns in Spotfire.
Article ID: KB0075877
Updated On:
| Products | Versions |
|---|---|
| Spotfire Analyst | ALL |
Description
Description:
Cloudera Impala Exception - DISTINCT aggregate functions need to have the same set of parameters as count(DISTINCT transaction.column_name); deviating function: count(DISTINCT transaction.Column_name)
Symptoms:
Cloudera Impala Exception - DISTINCT aggregate functions need to have the same set of parameters as count(DISTINCT transaction.column_name); deviating function: count(DISTINCT transaction.Column_name)
Symptoms:
If the same parameters are not set, you may see the following error.
"Error while executing a query in Impala: [HY000] : AnalysisException: all DISTINCT aggregate functions need to have the same set of parameters as count(DISTINCT transaction.Column_name_1); deviating function: count(DISTINCT transaction.column_name_2)".
Issue/Introduction
Cloudera Impala Connector throw an error when using COUNT(DISTINCT) aggregate functions with multiple columns in Spotfire.
Resolution
Option 1). Remove the multiple columns.
The following is from Cloudera - https://impala.apache.org/docs/build/html/topics/impala_query_options.html .
Option 2). Use the SET statement APPX_COUNT_DISTINCT which allows multiple COUNT(DISTINCT) operations within a single query.
The following is from Cloudera - https://impala.apache.org/docs/build/html/topics/impala_query_options.html .
"In Impala 2.0 and later, you can set query options directly through the JDBC and ODBC interfaces by using the SET statement. Formerly, SET was only available as command within the impala-shell interpreter."
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