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create database mysqltest collate = utf8_bin;
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` COLLATE = utf8_bin
alter database mysqltest collate = utf8_general_ci;
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` COLLATE = utf8_general_ci
alter database mysqltest collate = utf8_bin;
show create database mysqltest;
Database Create Database
mysqltest CREATE DATABASE `mysqltest` COLLATE = utf8_bin
use mysqltest;
create table t1 (a varchar(10));
create table t2 (a varchar(10)) collate = utf8_general_ci;
insert into t1 values ('a'),('A'),('aA'),('Aa'),('ab'),('Ab');
insert into t2 values ('a'),('A'),('aA'),('Aa'),('ab'),('Ab');
select * from t1 order by a;
a
A
Aa
Ab
a
aA
ab
select * from t2 order by a;
a
a
A
aA
Aa
ab
Ab
show create table t1;
Table Create Table
t1 CREATE TABLE `t1` (
`a` VARCHAR(10) COLLATE utf8_bin DEFAULT NULL
) ENGINE=DEFAULT COLLATE = utf8_bin
show create table t2;
Table Create Table
t2 CREATE TABLE `t2` (
`a` VARCHAR(10) COLLATE utf8_general_ci DEFAULT NULL
) ENGINE=DEFAULT COLLATE = utf8_general_ci
select count(*) from t1 where a='a';
count(*)
1
select count(*) from t2 where a='a';
count(*)
2
select count(*) from t1 where a like 'a%';
count(*)
3
select count(*) from t2 where a like 'a%';
count(*)
6
drop table if exists t1;
drop table if exists t2;
drop database if exists mysqltest;
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