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MDEV-15073: Generic UDAF parser code in server for windows functions

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Added support for usual agreggate UDF (UDAF)
Added remove() call support for more efficient window function processing
Added example of aggregate UDF with efficient windows function support
This commit is contained in:
Oleksandr Byelkin
2018-11-20 10:58:34 +01:00
parent a956260d82
commit 555921a9c3
10 changed files with 386 additions and 0 deletions
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7
sql/udf_example.def
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@@ -23,6 +23,13 @@ EXPORTS
avgcost_add
avgcost_clear
avgcost
avg2_init
avg2_deinit
avg2_reset
avg2_add
avg2_remove
avg2_clear
avg2
is_const
is_const_init
check_const_len