James Taylor created CALCITE-497:
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Summary: Support optional qualifier for column name references
Key: CALCITE-497
URL: https://issues.apache.org/jira/browse/CALCITE-497
Project: Calcite
Issue Type: Improvement
Reporter: James Taylor
Assignee: Julian Hyde
Some systems, such as HBase, have a named group to which columns belong (i.e. a
column family in this case). To disambiguate column references (i.e. if the
same column name is used in different column families), it's useful to allow an
optional qualifier. This is similar to the RECORD field mechanism that Calcite
already supports, but in this case the record name would be optional, since
it's not necessary if the column names are unique. For example:
http://phoenix.apache.org/language/index.html#column_ref
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