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drop table if exists t1;
create table t1 (a char (20) not null, b int not null auto_increment, index (a,b));
insert into t1 (a) values ('ä'),('ac'),('ae'),('ad'),('Äc'),('aeb');
insert into t1 (a) values ('üc'),('uc'),('ue'),('ud'),('Ü'),('ueb'),('uf');
insert into t1 (a) values ('ö'),('oc'),('Öa'),('oe'),('od'),('Öc'),('oeb');
insert into t1 (a) values ('s'),('ss'),('ß'),('ßb'),('ssa'),('ssc'),('ßa');
insert into t1 (a) values ('eä'),('uü'),('öo'),('ää'),('ääa'),('aeae');
insert into t1 (a) values ('q'),('a'),('u'),('o'),('é'),('É'),('a');
select a,b from t1 order by a,b;
a b
a 1
a 2
ac 1
ad 1
ä 1
ae 2
ää 1
aeae 2
ääa 1
aeb 1
Äc 1
é 1
É 2
eä 1
o 1
oc 1
od 1
ö 1
oe 2
Öa 1
oeb 1
Öc 1
öo 1
q 1
s 1
ss 1
ß 2
ssa 1
ßa 2
ßb 1
ssc 1
u 1
uc 1
ud 1
ue 1
Ü 2
ueb 1
üc 1
uf 1
uü 1
select a,b from t1 order by upper(a),b;
a b
a 1
a 2
ac 1
ad 1
ä 1
ae 2
ää 1
aeae 2
ääa 1
aeb 1
Äc 1
é 1
É 2
eä 1
o 1
oc 1
od 1
ö 1
oe 2
Öa 1
oeb 1
Öc 1
öo 1
q 1
s 1
ss 1
ß 2
ssa 1
ßa 2
ßb 1
ssc 1
u 1
uc 1
ud 1
ue 1
Ü 2
ueb 1
üc 1
uf 1
uü 1
select a from t1 order by a desc;
a
uü
uf
üc
ueb
Ü
ue
ud
uc
u
ssc
ßb
ßa
ssa
ß
ss
s
q
öo
Öc
oeb
Öa
oe
ö
od
oc
o
eä
É
é
Äc
aeb
ääa
aeae
ää
ae
ä
ad
ac
a
a
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select * from t1 where a like "ö%";
a b
ö 1
Öa 1
Öc 1
öo 1
select * from t1 where a like binary "%É%";
a b
É 2
select * from t1 where a like "%Á%";
a b
a 1
a 2
ac 1
ad 1
ae 2
aeae 2
ääa 1
aeb 1
Öa 1
ssa 1
ßa 2
select * from t1 where a like "%U%";
a b
u 1
uc 1
ud 1
ue 1
ueb 1
uf 1
uü 1
select * from t1 where a like "%ss%";
a b
ss 1
ssa 1
ssc 1
drop table t1;
select strcmp('ä','ae'),strcmp('ae','ä'),strcmp('aeq','äq'),strcmp('äq','aeq');
strcmp('ä','ae') strcmp('ae','ä') strcmp('aeq','äq') strcmp('äq','aeq')
0 0 0 0
select strcmp('ss','ß'),strcmp('ß','ss'),strcmp('ßs','sss'),strcmp('ßq','ssq');
strcmp('ss','ß') strcmp('ß','ss') strcmp('ßs','sss') strcmp('ßq','ssq')
0 0 0 0
select strcmp('ä','af'),strcmp('a','ä'),strcmp('ää','aeq'),strcmp('ää','aeaeq');
strcmp('ä','af') strcmp('a','ä') strcmp('ää','aeq') strcmp('ää','aeaeq')
-1 -1 -1 -1
select strcmp('ss','ßa'),strcmp('ß','ssa'),strcmp('sßa','sssb'),strcmp('s','ß');
strcmp('ss','ßa') strcmp('ß','ssa') strcmp('sßa','sssb') strcmp('s','ß')
-1 -1 -1 -1
select strcmp('ö','oö'),strcmp('Ü','uü'),strcmp('ö','oeb');
strcmp('ö','oö') strcmp('Ü','uü') strcmp('ö','oeb')
-1 -1 -1
select strcmp('af','ä'),strcmp('ä','a'),strcmp('aeq','ää'),strcmp('aeaeq','ää');
strcmp('af','ä') strcmp('ä','a') strcmp('aeq','ää') strcmp('aeaeq','ää')
1 1 1 1
select strcmp('ßa','ss'),strcmp('ssa','ß'),strcmp('sssb','sßa'),strcmp('ß','s');
strcmp('ßa','ss') strcmp('ssa','ß') strcmp('sssb','sßa') strcmp('ß','s')
1 1 1 1
select strcmp('u','öa'),strcmp('u','ö');
strcmp('u','öa') strcmp('u','ö')
1 1
create table t1 (a varchar(10), key(a), fulltext (a));
insert into t1 values ("a"),("abc"),("abcd"),("hello"),("test");
select * from t1 where a like "abc%";
a
abc
abcd
select * from t1 where a like "test%";
a
test
select * from t1 where a like "te_t";
a
test
select * from t1 where match a against ("te*" in boolean mode)+0;
a
test
drop table t1;
create table t1 (word varchar(255) not null, word2 varchar(255) not null, index(word));
insert into t1 (word) values ('ss'),(0xDF),(0xE4),('ae');
update t1 set word2=word;
select word, word=binary 0xdf as t from t1 having t > 0;
word t
ß 1
select word, word=cast(0xdf AS CHAR) as t from t1 having t > 0;
word t
ss 1
ß 1
select * from t1 where word=binary 0xDF;
word word2
ß ß
select * from t1 where word=CAST(0xDF as CHAR);
word word2
ss ss
ß ß
select * from t1 where word2=binary 0xDF;
word word2
ß ß
select * from t1 where word2=CAST(0xDF as CHAR);
word word2
ss ss
ß ß
select * from t1 where word='ae';
word word2
ä ä
ae ae
select * from t1 where word= 0xe4 or word=CAST(0xe4 as CHAR);
word word2
ä ä
ae ae
select * from t1 where word between binary 0xDF and binary 0xDF;
word word2
ß ß
select * from t1 where word between CAST(0xDF AS CHAR) and CAST(0xDF AS CHAR);
word word2
ss ss
ß ß
select * from t1 where word like 'ae';
word word2
ae ae
select * from t1 where word like 'AE';
word word2
ae ae
select * from t1 where word like binary 0xDF;
word word2
ß ß
select * from t1 where word like CAST(0xDF as CHAR);
word word2
ß ß
drop table t1;
CREATE TABLE t1 (
s1 CHAR(5) CHARACTER SET latin1 COLLATE latin1_german2_ci
);
INSERT INTO t1 VALUES ('Ü');
INSERT INTO t1 VALUES ('ue');
SELECT DISTINCT s1 FROM t1;
s1
Ü
SELECT s1,COUNT(*) FROM t1 GROUP BY s1;
s1 COUNT(*)
Ü 2
SELECT COUNT(DISTINCT s1) FROM t1;
COUNT(DISTINCT s1)
1
DROP TABLE t1;
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