Details
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Improvement
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Status: Closed
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Major
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Resolution: Fixed
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None
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None
Description
RelFieldTrimmer not support SNAPSHOT( So do Sample)
- Here is a SQL example
select D, E from VIRTUALCOLUMNS.VC_T1 for system_time as of TIMESTAMP '2011-01-02 00:00:00'
- Before Trimming
LogicalProject(D=[$3], E=[$4]) LogicalSnapshot(period=[2011-01-02 00:00:00]) LogicalProject(A=[$0], B=[$1], C=[$2], D=[$3], $f4=[+($0, 1)]) LogicalTableScan(table=[[CATALOG, VIRTUALCOLUMNS, VC_T1]])
- After Trimming
LogicalSnapshot(period=[2011-01-02 00:00:00]) LogicalProject(D=[$3], $f4=[+($0, 1)]) LogicalTableScan(table=[[CATALOG, VIRTUALCOLUMNS, VC_T1]])
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