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Bug#51830: Incorrect partition pruning on range partition

Browse Source 
(regression)

Problem was that partition pruning did not exclude the
last partition if the range was beyond it
(i.e. not using MAXVALUE)

Fix was to not include the last partition if the
partitioning function value was not within the partition
range.
This commit is contained in:
Mattias Jonsson
2010-03-10 12:56:05 +01:00
parent 75ac623404
commit f83e302a13
5 changed files with 202 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

84
mysql-test/r/partition_pruning.result
View File

@@ -2101,6 +2101,21 @@ insert into t7 values (10),(30),(50);
explain partitions select * from t7 where a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a < 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a <= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a = 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a > 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
@@ -2110,9 +2125,33 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t7 where a = 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30 system NULL NULL NULL NULL 1
explain partitions select * from t7 where a >= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a > 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a <= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a >= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a < 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a <= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
@@ -2122,6 +2161,9 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t7 where a >= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 91;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 11 and a < 29;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
@@ -2137,6 +2179,21 @@ insert into t7 values (10),(30),(50);
explain partitions select * from t7 where a < 5;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a < 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a <= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a = 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a >= 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a > 9;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
@@ -2146,9 +2203,33 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t7 where a = 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30 system NULL NULL NULL NULL 1
explain partitions select * from t7 where a >= 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a > 10;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a < 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a <= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a >= 89;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a < 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a <= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE t7 p10,p30,p50,p70,p90 ALL NULL NULL NULL NULL 3 Using where
explain partitions select * from t7 where a = 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
@@ -2158,6 +2239,9 @@ id select_type table partitions type possible_keys key key_len ref rows Extra
explain partitions select * from t7 where a >= 90;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 91;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables
explain partitions select * from t7 where a > 11 and a < 29;
id select_type table partitions type possible_keys key key_len ref rows Extra
1 SIMPLE NULL NULL NULL NULL NULL NULL NULL NULL Impossible WHERE noticed after reading const tables