database/mariadb-columnstore-engine
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mcol-5328-regexp-substr
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Author SHA1 Message Date
Andrey Piskunov
c5fa27475d Welford algorithm for STD and VAR 
Naive algorithm for calculating STD and VAR is subject to catastrophic
cancellation. A well-known Welford's algorithms is used instead.
 2022-06-03 15:29:30 +03:00