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Implement FILTER-clause for aggregate functions [CORE5768] #6031

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firebird-issue-importer opened this issue Mar 8, 2018 · 4 comments
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@firebird-issue-importer firebird-issue-importer commented Mar 8, 2018

Submitted by: @mrotteveel

Implement FILTER-clause for aggregate functions (introduced in SQL:2003). This syntax allows for filtering before aggregation.

Basic example:

SUM(<expression>) FILTER(WHERE <condition>)

or with window functions:

SUM(<expression>) FILTER(WHERE <condition>) OVER (<window>)

Workarounds/alternative: use a CASE-expression within the aggregate function.

See also SQL:2016 10.9 <aggregate function> and https://modern-sql.com/feature/filter

Commits: 7206db3 e33ddf8

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@firebird-issue-importer firebird-issue-importer commented Mar 8, 2018

Modified by: @asfernandes

assignee: Adriano dos Santos Fernandes [ asfernandes ]

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@firebird-issue-importer firebird-issue-importer commented Oct 3, 2018

Modified by: @asfernandes

status: Open [ 1 ] => Resolved [ 5 ]

resolution: Fixed [ 1 ]

Fix Version: 4.0 Beta 1 [ 10750 ]

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@firebird-issue-importer firebird-issue-importer commented Dec 12, 2018

Modified by: @pavel-zotov

status: Resolved [ 5 ] => Resolved [ 5 ]

QA Status: No test => Done successfully

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@firebird-issue-importer firebird-issue-importer commented Dec 12, 2018

Modified by: @pavel-zotov

status: Resolved [ 5 ] => Closed [ 6 ]

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