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https://issues.apache.org/jira/browse/HAWQ-973?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kavinder Dhaliwal updated HAWQ-973:
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Description: "add_projection_desc_httpheader()" extracts the indices of
columns to project from pi_varNumbers, but calculates the length based on
pi_targetList. This is similar to how ExecVariableList handles projection.
However there are cases where length(pi_targetList) >0 and
length(pi_varNumbers) == 0, so a condition on pi_varList needs to be added
before invoking add_projection_desc_httpheader as is done in ExecProject.
(was: {code}
add_projection_desc_httpheader
{code}
extracts the indices of columns to project from pi_varNumbers, but calculates
the length based on pi_targetList. This is similar to how ExecVariableList
handles projection. However there are cases where length(pi_targetList) >0 and
length(pi_varNumbers) == 0, so a condition on pi_varList needs to be added
before invoking add_projection_desc_httpheader as is done in ExecProject.)
> Check pi_varList in pxfheaders before setting headers
> -----------------------------------------------------
>
> Key: HAWQ-973
> URL: https://issues.apache.org/jira/browse/HAWQ-973
> Project: Apache HAWQ
> Issue Type: Bug
> Components: PXF
> Reporter: Kavinder Dhaliwal
> Assignee: Kavinder Dhaliwal
>
> "add_projection_desc_httpheader()" extracts the indices of columns to project
> from pi_varNumbers, but calculates the length based on pi_targetList. This is
> similar to how ExecVariableList handles projection. However there are cases
> where length(pi_targetList) >0 and length(pi_varNumbers) == 0, so a condition
> on pi_varList needs to be added before invoking
> add_projection_desc_httpheader as is done in ExecProject.
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