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Fixed bugs mdev-4357 and mdev-4359.

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The values of the column HIST_TYPE from the statistical table
mysql.column_stats were stored in the table and read from the
table incorrectly.
This commit is contained in:
Igor Babaev
2013-04-05 23:48:49 -07:00
parent 503731d80f
commit 1ae352afbe
6 changed files with 121 additions and 28 deletions
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2
mysql-test/t/selectivity.test
View File

@ -211,7 +211,7 @@ eval EXPLAIN EXTENDED $Q20;
eval $Q20;
set histogram_type='DOUBLE_PREC_HB';
set histogram_size=254;
set histogram_size=126;
ANALYZE TABLE part PERSISTENT FOR COLUMNS(p_name) INDEXES();

53
mysql-test/t/statistics.test
View File

@ -174,7 +174,7 @@ ANALYZE TABLE t1;
SELECT db_name, table_name, column_name,
min_value, max_value,
nulls_ratio, avg_frequency,
hist_size, HEX(histogram)
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
DELETE FROM mysql.column_stats;
@ -186,7 +186,7 @@ ANALYZE TABLE t1;
SELECT db_name, table_name, column_name,
min_value, max_value,
nulls_ratio, avg_frequency,
hist_size, HEX(histogram)
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
DELETE FROM mysql.column_stats;
@ -590,6 +590,53 @@ DELETE FROM mysql.table_stats;
DELETE FROM mysql.column_stats;
DELETE FROM mysql.index_stats;
--echo #
--echo # Bug mdev-4357: empty string as a value of the HIST_SIZE column
--echo # from mysql.column_stats
--echo #
create table t1 (a int);
insert into t1 values (1),(2),(3);
set histogram_size=10;
analyze table t1 persistent for all;
select db_name, table_name, column_name,
min_value, max_value,
nulls_ratio, avg_frequency,
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
set histogram_size=default;
drop table t1;
--echo #
--echo # Bug mdev-4359: wrong setting of the HIST_SIZE column
--echo # (see also mdev-4357) from mysql.column_stats
--echo #
create table t1 ( a int);
insert into t1 values (1),(2),(3),(4),(5);
set histogram_size=10;
set histogram_type='double_prec_hb';
show variables like 'histogram%';
analyze table t1 persistent for all;
select db_name, table_name, column_name,
min_value, max_value,
nulls_ratio, avg_frequency,
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
set histogram_size=default;
set histogram_type=default;
drop table t1;
set use_stat_tables=@save_use_stat_tables;