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https://issues.apache.org/jira/browse/TAJO-167?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Hyunsik Choi updated TAJO-167:
------------------------------
Description:
This patch removes CountValueFunctionExpr and add GeneralSetFunctionExpr
corresponding to general_set_function of SQL 2003 BNF
(http://savage.net.au/SQL/sql-2003-2.bnf.html#general set function).
After this patch, we should use GeneralSetFunctionExpr to represent all SQL
standard aggregation functions (e.g., max, min, avg, sum, stddev_pop,
stddev_samp and so on).
Also, GeneralSetFunctionExpr has an attribute for distinct keyword that set
functions can have.
was:
This patch removes CountValueFunctionExpr and add GeneralSetFunctionExpr
corresponding to general_set_function of SQL 2003 BNF
(http://savage.net.au/SQL/sql-2003-2.bnf.html#general set function).
After this patch, we should use GeneralSetFunctionExpr to represent all SQL
standard aggregation functions (e.g., max, min, avg, sum, stddev_pop,
stddev_samp andg so on).
Also, GeneralSetFunctionExpr has an attribute for distinct keyword that set
functions can have.
> Implement GeneralSetFunctionExpr to represent with all SQL standard set
> functions.
> ----------------------------------------------------------------------------------
>
> Key: TAJO-167
> URL: https://issues.apache.org/jira/browse/TAJO-167
> Project: Tajo
> Issue Type: Improvement
> Components: planner/optimizer
> Reporter: Hyunsik Choi
> Assignee: Hyunsik Choi
> Fix For: 0.2-incubating
>
> Attachments: TAJO-167.patch
>
>
> This patch removes CountValueFunctionExpr and add GeneralSetFunctionExpr
> corresponding to general_set_function of SQL 2003 BNF
> (http://savage.net.au/SQL/sql-2003-2.bnf.html#general set function).
> After this patch, we should use GeneralSetFunctionExpr to represent all SQL
> standard aggregation functions (e.g., max, min, avg, sum, stddev_pop,
> stddev_samp and so on).
> Also, GeneralSetFunctionExpr has an attribute for distinct keyword that set
> functions can have.
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