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Backfill json histogram bounds during building

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Signed-off-by: Michael Okoko <okokomichaels@outlook.com>
This commit is contained in:
Michael Okoko
2021-08-21 00:50:55 +01:00
committed by Sergei Petrunia
parent 3d952cd8bd
commit e10d99ce87
6 changed files with 480 additions and 43 deletions
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10
sql/sql_statistics.cc
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@@ -1988,8 +1988,16 @@ public:
column->store_field_value((uchar *) elem, col_length);
StringBuffer<MAX_FIELD_WIDTH> val;
column->val_str(&val);
bucket_bounds.emplace_back(val.c_ptr());
auto it = bucket_bounds.begin();
bucket_bounds.insert(it+curr_bucket, val.c_ptr());
curr_bucket++;
while (curr_bucket != hist_width &&
count > bucket_capacity * (curr_bucket + 1))
{
auto it = bucket_bounds.begin();
bucket_bounds.insert(it+curr_bucket, bucket_bounds[curr_bucket-1]);
curr_bucket++;
}
}
return 0;
}