mirror of
https://github.com/MariaDB/server.git
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Merge with new VARCHAR code
This commit is contained in:
monty@mysql.com
@ -1,4 +1,4 @@
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drop table if exists t1;
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drop table if exists t1,t2,t3;
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create table t1 (a int not null,b int not null, primary key (a)) engine=heap comment="testing heaps" avg_row_length=100 min_rows=1 max_rows=100;
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insert into t1 values(1,1),(2,2),(3,3),(4,4);
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delete from t1 where a=1 or a=0;
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@ -249,3 +249,421 @@ a
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3
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2
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drop table t1;
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set storage_engine=HEAP;
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create table t1 (v varchar(10), c char(10), t varchar(50));
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insert into t1 values('+ ', '+ ', '+ ');
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set @a=repeat(' ',20);
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insert into t1 values (concat('+',@a),concat('+',@a),concat('+',@a));
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Warnings:
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Warning 1265 Data truncated for column 'v' at row 1
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select concat('*',v,'*',c,'*',t,'*') from t1;
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concat('*',v,'*',c,'*',t,'*')
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*+ *+*+ *
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*+ *+*+ *
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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create table t2 like t1;
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show create table t2;
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Table Create Table
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t2 CREATE TABLE `t2` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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create table t3 select * from t1;
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show create table t3;
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Table Create Table
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t3 CREATE TABLE `t3` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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alter table t1 modify c varchar(10);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` varchar(10) default NULL,
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`c` varchar(10) default NULL,
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`t` varchar(50) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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alter table t1 modify v char(10);
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` char(10) default NULL,
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`c` varchar(10) default NULL,
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`t` varchar(50) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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alter table t1 modify t varchar(10);
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Warnings:
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Warning 1265 Data truncated for column 't' at row 2
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` char(10) default NULL,
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`c` varchar(10) default NULL,
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`t` varchar(10) default NULL
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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select concat('*',v,'*',c,'*',t,'*') from t1;
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concat('*',v,'*',c,'*',t,'*')
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*+*+*+ *
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*+*+*+ *
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drop table t1,t2,t3;
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create table t1 (v varchar(10), c char(10), t varchar(50), key(v), key(c), key(t(10)));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL,
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KEY `v` (`v`),
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KEY `c` (`c`),
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KEY `t` (`t`(10))
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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select count(*) from t1;
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count(*)
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270
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insert into t1 values(concat('a',char(1)),concat('a',char(1)),concat('a',char(1)));
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select count(*) from t1 where v='a';
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count(*)
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10
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select count(*) from t1 where c='a';
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count(*)
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10
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select count(*) from t1 where t='a';
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count(*)
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10
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select count(*) from t1 where v='a ';
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count(*)
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10
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select count(*) from t1 where c='a ';
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count(*)
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10
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select count(*) from t1 where t='a ';
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count(*)
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10
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select count(*) from t1 where v between 'a' and 'a ';
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count(*)
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10
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select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
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count(*)
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10
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select count(*) from t1 where v like 'a%';
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count(*)
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11
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select count(*) from t1 where c like 'a%';
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count(*)
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11
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select count(*) from t1 where t like 'a%';
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count(*)
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11
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select count(*) from t1 where v like 'a %';
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count(*)
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9
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explain select count(*) from t1 where v='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref v v 13 const 10 Using where
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explain select count(*) from t1 where c='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref c c 11 const 10 Using where
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explain select count(*) from t1 where t='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref t t 13 const 10 Using where
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explain select count(*) from t1 where v like 'a%';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL v NULL NULL NULL 271 Using where
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explain select count(*) from t1 where v between 'a' and 'a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL v NULL NULL NULL 271 Using where
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explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ALL v NULL NULL NULL 271 Using where
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alter table t1 add unique(v);
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ERROR 23000: Duplicate entry '{ ' for key 1
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alter table t1 add key(v);
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select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a';
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qq
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a*a*a*
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explain select * from t1 where v='a';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref v,v_2 v 13 const 10 Using where
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select v,count(*) from t1 group by v limit 10;
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v count(*)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select v,count(t) from t1 group by v limit 10;
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v count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select v,count(c) from t1 group by v limit 10;
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v count(c)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select sql_big_result v,count(t) from t1 group by v limit 10;
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v count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select sql_big_result v,count(c) from t1 group by v limit 10;
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v count(c)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select c,count(*) from t1 group by c limit 10;
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c count(*)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select c,count(t) from t1 group by c limit 10;
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c count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select sql_big_result c,count(t) from t1 group by c limit 10;
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c count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select t,count(*) from t1 group by t limit 10;
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t count(*)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select t,count(t) from t1 group by t limit 10;
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t count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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select sql_big_result t,count(t) from t1 group by t limit 10;
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t count(t)
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a 1
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a 10
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b 10
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c 10
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d 10
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e 10
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f 10
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g 10
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h 10
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i 10
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drop table t1;
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create table t1 (a char(10), unique (a));
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insert into t1 values ('a');
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a' for key 1
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alter table t1 modify a varchar(10);
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insert into t1 values ('a '),('a '),('a '),('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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update t1 set a='a ' where a like 'a ';
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update t1 set a='a ' where a like 'a ';
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drop table t1;
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create table t1 (v varchar(10), c char(10), t varchar(50), key using btree (v), key using btree (c), key using btree (t(10)));
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show create table t1;
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Table Create Table
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t1 CREATE TABLE `t1` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL,
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KEY `v` TYPE BTREE (`v`),
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KEY `c` TYPE BTREE (`c`),
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KEY `t` TYPE BTREE (`t`(10))
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) ENGINE=HEAP DEFAULT CHARSET=latin1
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select count(*) from t1;
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count(*)
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270
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insert into t1 values(concat('a',char(1)),concat('a',char(1)),concat('a',char(1)));
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select count(*) from t1 where v='a';
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count(*)
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10
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select count(*) from t1 where c='a';
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count(*)
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10
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select count(*) from t1 where t='a';
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count(*)
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10
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select count(*) from t1 where v='a ';
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count(*)
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10
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select count(*) from t1 where c='a ';
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count(*)
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10
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select count(*) from t1 where t='a ';
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count(*)
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10
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select count(*) from t1 where v between 'a' and 'a ';
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count(*)
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10
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select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
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count(*)
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10
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explain select count(*) from t1 where v='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref v v 13 const # Using where
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explain select count(*) from t1 where c='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref c c 11 const # Using where
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explain select count(*) from t1 where t='a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref t t 13 const # Using where
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explain select count(*) from t1 where v like 'a%';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range v v 13 NULL # Using where
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explain select count(*) from t1 where v between 'a' and 'a ';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range v v 13 NULL # Using where
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explain select count(*) from t1 where v between 'a' and 'a ' and v between 'a ' and 'b\n';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 range v v 13 NULL # Using where
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alter table t1 add unique(v);
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ERROR 23000: Duplicate entry '{ ' for key 1
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alter table t1 add key(v);
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select concat('*',v,'*',c,'*',t,'*') as qq from t1 where v='a';
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qq
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*a*a*a*
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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*a *a*a *
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explain select * from t1 where v='a';
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id select_type table type possible_keys key key_len ref rows Extra
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1 SIMPLE t1 ref v,v_2 v 13 const 7 Using where
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drop table t1;
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create table t1 (a char(10), unique using btree (a)) engine=heap;
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insert into t1 values ('a');
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a' for key 1
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alter table t1 modify a varchar(10);
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insert into t1 values ('a '),('a '),('a '),('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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insert into t1 values ('a ');
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ERROR 23000: Duplicate entry 'a ' for key 1
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update t1 set a='a ' where a like 'a ';
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update t1 set a='a ' where a like 'a ';
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drop table t1;
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create table t1 (v varchar(10), c char(10), t varchar(50), key(v(5)), key(c(5)), key(t(5)));
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show create table t1;
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||||
Table Create Table
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||||
t1 CREATE TABLE `t1` (
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`v` varchar(10) default NULL,
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`c` char(10) default NULL,
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`t` varchar(50) default NULL,
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KEY `v` (`v`(5)),
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KEY `c` (`c`(5)),
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KEY `t` (`t`(5))
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||||
) ENGINE=HEAP DEFAULT CHARSET=latin1
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drop table t1;
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create table t1 (v varchar(65530), key(v(10)));
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show create table t1;
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Table Create Table
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||||
t1 CREATE TABLE `t1` (
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||||
`v` varchar(65530) default NULL,
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||||
KEY `v` (`v`(10))
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||||
) ENGINE=HEAP DEFAULT CHARSET=latin1
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insert into t1 values(repeat('a',65530));
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select length(v) from t1 where v=repeat('a',65530);
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length(v)
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||||
65530
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drop table t1;
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||||
set storage_engine=MyISAM;
|
||||
|
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