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ASF GitHub Bot commented on HAWQ-927: ------------------------------------- Github user sansanichfb commented on a diff in the pull request: https://github.com/apache/incubator-hawq/pull/796#discussion_r71022820 --- Diff: src/backend/access/external/pxfheaders.c --- @@ -158,6 +165,29 @@ static void add_tuple_desc_httpheader(CHURL_HEADERS headers, Relation rel) pfree(formatter.data); } +static void add_projection_desc_httpheader(CHURL_HEADERS headers, ProjectionInfo *projInfo) { + int i; + char long_number[32]; --- End diff -- You can try something like: char long_number[(sizeof int) * 8]; > Send Projection Info Data from HAWQ to PXF > ------------------------------------------ > > Key: HAWQ-927 > URL: https://issues.apache.org/jira/browse/HAWQ-927 > Project: Apache HAWQ > Issue Type: Sub-task > Components: External Tables, PXF > Reporter: Kavinder Dhaliwal > Assignee: Kavinder Dhaliwal > Fix For: backlog > > > To achieve column projection at the level of PXF or the underlying readers we > need to first send this data as a Header/Param to PXF. Currently, PXF has no > knowledge whether a query requires all columns or a subset of columns. -- This message was sent by Atlassian JIRA (v6.3.4#6332)