Well, I've pushed that logic. Looks about 2 lines prettier
ср, 4 дек. 2019 г., 19:19 Sergei Golubchik <s...@mariadb.org>: > Hi, Nikita! > > On Dec 04, Nikita Malyavin wrote: > > > > Another case: > > suppose you have to rows in table with periods (a<b<c<d): > > (a, c), > > (c, d). > > Let us update (c,d) --> (b,d). I call it "move left". > > > > ha_index_read_map with period_start < d will return (c,d). Again check > > is_update, and call ha_index_prev() > > Yes, for update you might need a second check, if the first search will > find the old row. This will be always the case, no matter how you index. > In your patch you also have extra checks for update. > > Regards, > Sergei > VP of MariaDB Server Engineering > and secur...@mariadb.org >
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