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MDEV-27230: Estimation for filtered rows less precise ...

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Fix the code in Histogram_json_hb::range_selectivity that handles
special cases: a non-inclusive endpoint hitting a bucket boundary...
This commit is contained in:
Sergei Petrunia
2021-12-13 23:46:04 +03:00
parent 08f1c4a2e0
commit 905634dc3f
3 changed files with 28 additions and 0 deletions
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sql/opt_histogram_json.cc
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@@ -1022,6 +1022,7 @@ double Histogram_json_hb::range_selectivity(Field *field, key_range *min_endp,
$CONST. Move to the previous bucket.
*/
idx--;
equal= false;
}
double left_fract= get_left_fract(idx);