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Address review input

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This commit is contained in:
Sergei Petrunia
2021-09-11 19:43:08 +03:00
parent cf8927e9cb
commit 382250c05c
4 changed files with 78 additions and 4 deletions
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23
mysql-test/main/statistics_json.test
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@ -149,3 +149,26 @@ set histogram_type=@save_histogram_type;
set histogram_size=@save_histogram_size;
DROP SCHEMA world;
use test;
create table t10 (
a varchar(10)
);
--echo #
--echo # Histograms are not collected for empty tables:
--echo #
analyze table t10 persistent for all;
select histogram
from mysql.column_stats where table_name='t10' and db_name=database();
--echo #
--echo # Try with n_buckets > n_rows
--echo #
insert into t10 values ('Berlin'),('Paris'),('Rome');
set histogram_size=10, histogram_type='json_hb';
analyze table t10 persistent for all;
select histogram
from mysql.column_stats where table_name='t10' and db_name=database();
drop table t10;