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Do not create histograms for single column unique key
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The intentention was always to not create histograms for single value
unique keys (as histograms is not useful in this case), but because of
a bug in the code this was still done.

The changes in the test cases was mainly because hist_size is now NULL
for these kind of columns.
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@montywi
montywi committed Oct 14, 2023
1 parent 18fa00a commit ec277a7
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Showing 4 changed files with 41 additions and 41 deletions.
6 changes: 3 additions & 3 deletions mysql-test/main/stat_tables.result
View file
Expand Up @@ -542,14 +542,14 @@ test.t1 analyze Warning Engine-independent statistics are not collected for colu
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
DELETE FROM mysql.column_stats
WHERE db_name='test' AND table_name='t1' AND column_name='t';
INSERT INTO mysql.column_stats VALUES
('test','t1','t','bar','foo', 0.0, 3.0, 1.0, 0, NULL, NULL);
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 t bar foo 0.0000 3.0000 1.0000 0 NULL NULL
SELECT pk FROM t1;
pk
Expand All @@ -573,7 +573,7 @@ pk c
2 bar
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c bar foo 0.0000 3.0000 1.0000 0 NULL NULL
CREATE OR REPLACE TABLE t1 (pk int PRIMARY KEY, a char(7));
SELECT * FROM t1;
Expand Down
6 changes: 3 additions & 3 deletions mysql-test/main/stat_tables_innodb.result
View file
Expand Up @@ -574,14 +574,14 @@ test.t1 analyze Warning Engine-independent statistics are not collected for colu
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
DELETE FROM mysql.column_stats
WHERE db_name='test' AND table_name='t1' AND column_name='t';
INSERT INTO mysql.column_stats VALUES
('test','t1','t','bar','foo', 0.0, 3.0, 1.0, 0, NULL, NULL);
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 t bar foo 0.0000 3.0000 1.0000 0 NULL NULL
SELECT pk FROM t1;
pk
Expand All @@ -605,7 +605,7 @@ pk c
2 bar
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 pk 1 2 0.0000 4.0000 1.0000 0 NULL NULL
test t1 pk 1 2 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c bar foo 0.0000 3.0000 1.0000 0 NULL NULL
CREATE OR REPLACE TABLE t1 (pk int PRIMARY KEY, a char(7));
SELECT * FROM t1;
Expand Down
68 changes: 34 additions & 34 deletions mysql-test/main/statistics.result
View file
Expand Up @@ -70,7 +70,7 @@ db_name table_name cardinality
test t1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand All @@ -93,7 +93,7 @@ COUNT(*)
SELECT * FROM mysql.column_stats
WHERE db_name='test' AND table_name='t1' AND column_name='a';
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
SELECT MIN(t1.a), MAX(t1.a),
(SELECT COUNT(*) FROM t1 WHERE t1.b IS NULL) /
(SELECT COUNT(*) FROM t1) AS "NULLS_RATIO(t1.a)",
Expand Down Expand Up @@ -223,7 +223,7 @@ nulls_ratio, avg_frequency,
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type HEX(histogram)
test t1 a 0 49 0.0000 1.0000 4 SINGLE_PREC_HB 2E62A1D0
test t1 a 0 49 0.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 6.4000 4 SINGLE_PREC_HB 003FBFFF
test t1 c aaaa dddddddd 0.1250 7.0000 4 SINGLE_PREC_HB 0055AAFF
test t1 d 1989-03-12 1999-07-23 0.1500 8.5000 4 SINGLE_PREC_HB 001919FF
Expand All @@ -242,7 +242,7 @@ nulls_ratio, avg_frequency,
hist_size, hist_type, HEX(histogram)
FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_frequency hist_size hist_type HEX(histogram)
test t1 a 0 49 0.0000 1.0000 8 DOUBLE_PREC_HB 052F4363F4A1F9D0
test t1 a 0 49 0.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 6.4000 8 DOUBLE_PREC_HB 0000FF3FFFBFFFFF
test t1 c aaaa dddddddd 0.1250 7.0000 8 DOUBLE_PREC_HB 00005555AAAAFFFF
test t1 d 1989-03-12 1999-07-23 0.1500 8.5000 8 DOUBLE_PREC_HB 0000031A031AFFFF
Expand Down Expand Up @@ -289,13 +289,13 @@ test t1 40
test t3 17
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL
test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL
test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL
SELECT * FROM mysql.index_stats;
Expand All @@ -318,13 +318,13 @@ test s1 40
test t3 17
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test s1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test s1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test s1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test s1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
test s1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL
test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL
test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL
SELECT * FROM mysql.index_stats;
Expand All @@ -347,13 +347,13 @@ test t1 40
test t3 17
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 0 NULL NULL
test t3 a 0 38 0.0000 4.0000 1.0000 NULL NULL NULL
test t3 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.1765 18.0714 2.8000 0 NULL NULL
test t3 c aaaa dddddddd 0.1176 6.4000 3.7500 0 NULL NULL
SELECT * FROM mysql.index_stats;
Expand All @@ -375,7 +375,7 @@ db_name table_name cardinality
test t1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -416,7 +416,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 f 1 5 0.2000 1.0000 6.4000 0 NULL NULL
Expand All @@ -441,7 +441,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand All @@ -468,7 +468,7 @@ db_name table_name cardinality
test s1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test s1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test s1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test s1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test s1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test s1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -506,7 +506,7 @@ db_name table_name cardinality
test t1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -541,7 +541,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -577,7 +577,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand All @@ -594,7 +594,7 @@ test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -635,7 +635,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -664,7 +664,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand All @@ -683,7 +683,7 @@ LOAD DATA INFILE 'MYSQLTEST_VARDIR/tmp/save_index_stats'
FIELDS TERMINATED BY ',' OPTIONALLY ENCLOSED BY '"' LINES TERMINATED BY '\n';
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -717,7 +717,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -780,7 +780,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand All @@ -795,7 +795,7 @@ test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b NULL NULL 1.0000 NULL NULL 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand All @@ -819,7 +819,7 @@ test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -851,7 +851,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -881,7 +881,7 @@ t1 CREATE TABLE `t1` (
) ENGINE=MyISAM DEFAULT CHARSET=latin1 COLLATE=latin1_swedish_ci
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand All @@ -896,7 +896,7 @@ test.t1 analyze status Engine-independent statistics collected
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -978,7 +978,7 @@ db_name table_name cardinality
test t1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -1009,8 +1009,8 @@ test t1 40
test t2 40
SELECT * FROM mysql.column_stats ORDER BY column_name, table_name;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t2 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t2 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t2 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
Expand Down Expand Up @@ -1054,7 +1054,7 @@ db_name table_name cardinality
test t2 40
SELECT * FROM mysql.column_stats ORDER BY column_name;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t2 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t2 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t2 b vvvvvvvvvvvvv zzzzzzzzzzzzzzzzzz 0.2000 17.1250 6.4000 0 NULL NULL
test t2 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t2 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
Expand Down Expand Up @@ -1235,7 +1235,7 @@ test.t1 analyze Warning Engine-independent statistics are not collected for colu
test.t1 analyze status OK
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
Expand Down Expand Up @@ -1291,7 +1291,7 @@ db_name table_name cardinality
test t1 40
SELECT * FROM mysql.column_stats;
db_name table_name column_name min_value max_value nulls_ratio avg_length avg_frequency hist_size hist_type histogram
test t1 a 0 49 0.0000 4.0000 1.0000 0 NULL NULL
test t1 a 0 49 0.0000 4.0000 1.0000 NULL NULL NULL
test t1 c aaaa dddddddd 0.1250 6.6571 7.0000 0 NULL NULL
test t1 d 1989-03-12 1999-07-23 0.1500 3.0000 8.5000 0 NULL NULL
test t1 e 0.01 0.112 0.2250 8.0000 6.2000 0 NULL NULL
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2 changes: 1 addition & 1 deletion sql/sql_statistics.cc
View file
Expand Up @@ -2345,7 +2345,7 @@ void Column_statistics_collected::init(THD *thd, Field *table_field)
column_total_length= 0;
if (is_single_pk_col)
count_distinct= NULL;
if (table_field->flags & BLOB_FLAG)
else if (table_field->flags & BLOB_FLAG)
count_distinct= NULL;
else
{
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