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Up-merge from 5.0
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@@ -40,6 +40,8 @@ drop table t1;
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create table t1 (a bit) engine=innodb;
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create table t1 (a bit) engine=innodb;
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insert into t1 values (b'0'), (b'1'), (b'000'), (b'100'), (b'001');
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insert into t1 values (b'0'), (b'1'), (b'000'), (b'100'), (b'001');
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select hex(a) from t1;
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select hex(a) from t1;
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# It is not deterministic which duplicate will be seen first
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--replace_regex /(.*Duplicate entry )'.*'( for key.*)/\1''\2/
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--error ER_DUP_ENTRY
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--error ER_DUP_ENTRY
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alter table t1 add unique (a);
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alter table t1 add unique (a);
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drop table t1;
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drop table t1;
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@@ -1,21 +0,0 @@
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When comparing with ms-sql:
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Check how to get MySQL faster mysql ms-sql
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count_distinct (2000) | 89.00| 39.00|
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count_distinct_big (120) | 324.00| 121.00|
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count_distinct_group (1000) | 158.00| 107.00|
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count_distinct_group_on_key (1000) | 49.00| 17.00|
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count_distinct_group_on_key_parts (1| 157.00| 108.00|
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order_by_big (10) | 197.00| 89.00|
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order_by_big_key (10) | 170.00| 82.00|
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order_by_big_key2 (10) | 163.00| 73.00|
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order_by_big_key_desc (10) | 172.00| 84.00|
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order_by_big_key_diff (10) | 193.00| 89.00|
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order_by_big_key_prefix (10) | 165.00| 72.00|
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Why is the following slow on NT:
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NT Linux
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update_of_primary_key_many_keys (256| 560.00| 65.00|
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