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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 (''),('ac'),('ae'),('ad'),('c'),('aeb');
insert into t1 (a) values ('c'),('uc'),('ue'),('ud'),(''),('ueb'),('uf');
insert into t1 (a) values (''),('oc'),('a'),('oe'),('od'),('c'),('oeb');
insert into t1 (a) values ('s'),('ss'),(''),('b'),('ssa'),('ssc'),('a');
insert into t1 (a) values ('e'),('u'),('o'),(''),('a'),('aeae');
insert into t1 (a) values ('q'),('a'),('u'),('o'),(''),(''),('a');
select a,b from t1 order by a,b;
a b
a 1
a 2
ac 1
ad 1
1
ae 2
1
aeae 2
a 1
aeb 1
c 1
1
2
e 1
o 1
oc 1
od 1
1
oe 2
a 1
oeb 1
c 1
o 1
q 1
s 1
ss 1
2
ssa 1
a 2
b 1
ssc 1
u 1
uc 1
ud 1
ue 1
2
ueb 1
c 1
uf 1
u 1
select a,b from t1 order by upper(a),b;
a b
a 1
a 2
ac 1
ad 1
1
ae 2
1
aeae 2
a 1
aeb 1
c 1
1
2
e 1
o 1
oc 1
od 1
1
oe 2
a 1
oeb 1
c 1
o 1
q 1
s 1
ss 1
2
ssa 1
a 2
b 1
ssc 1
u 1
uc 1
ud 1
ue 1
2
ueb 1
c 1
uf 1
u 1
select a from t1 order by a desc;
a
u
uf
c
ueb
ue
ud
uc
u
ssc
b
a
ssa
ss
s
q
o
c
oeb
a
oe
od
oc
o
e
c
aeb
a
aeae
ae
ad
ac
a
a
check table t1;
Table Op Msg_type Msg_text
test.t1 check status OK
select * from t1 where a like "%";
a b
1
a 1
c 1
o 1
select * from t1 where a like binary "%%";
a b
2
select * from t1 where a like "%%";
a b
a 1
a 2
ac 1
ad 1
ae 2
aeae 2
a 1
aeb 1
a 1
ssa 1
a 2
select * from t1 where a like "%U%";
a b
u 1
uc 1
ud 1
ue 1
ueb 1
uf 1
u 1
select * from t1 where a like "%ss%";
a b
ss 1
ssa 1
ssc 1
drop table t1;
select strcmp('','ae'),strcmp('ae',''),strcmp('aeq','q'),strcmp('q','aeq');
strcmp('','ae') strcmp('ae','') strcmp('aeq','q') strcmp('q','aeq')
0 0 0 0
select strcmp('ss',''),strcmp('','ss'),strcmp('s','sss'),strcmp('q','ssq');
strcmp('ss','') strcmp('','ss') strcmp('s','sss') strcmp('q','ssq')
0 0 0 0
select strcmp('','af'),strcmp('a',''),strcmp('','aeq'),strcmp('','aeaeq');
strcmp('','af') strcmp('a','') strcmp('','aeq') strcmp('','aeaeq')
-1 -1 -1 -1
select strcmp('ss','a'),strcmp('','ssa'),strcmp('sa','sssb'),strcmp('s','');
strcmp('ss','a') strcmp('','ssa') strcmp('sa','sssb') strcmp('s','')
-1 -1 -1 -1
select strcmp('','o'),strcmp('','u'),strcmp('','oeb');
strcmp('','o') strcmp('','u') strcmp('','oeb')
-1 -1 -1
select strcmp('af',''),strcmp('','a'),strcmp('aeq',''),strcmp('aeaeq','');
strcmp('af','') strcmp('','a') strcmp('aeq','') strcmp('aeaeq','')
1 1 1 1
select strcmp('a','ss'),strcmp('ssa',''),strcmp('sssb','sa'),strcmp('','s');
strcmp('a','ss') strcmp('ssa','') strcmp('sssb','sa') strcmp('','s')
1 1 1 1
select strcmp('u','a'),strcmp('u','');
strcmp('u','a') strcmp('u','')
1 1
select strcmp('s', 'a'), strcmp('a', 'x');
strcmp('s', 'a') strcmp('a', 'x')
-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=0xdf as t from t1 having t > 0;
word t
1
select word, word=cast(0xdf AS CHAR) as t from t1 having t > 0;
word t
ss 1
1
select * from t1 where word=0xDF;
word word2
select * from t1 where word=CAST(0xDF as CHAR);
word word2
ss ss
select * from t1 where word2=0xDF;
word word2
select * from t1 where word2=CAST(0xDF as CHAR);
word word2
ss ss
select * from t1 where word='ae';
word word2
ae ae
select * from t1 where word= 0xe4 or word=CAST(0xe4 as CHAR);
word word2
ae ae
select * from t1 where word between 0xDF and 0xDF;
word word2
select * from t1 where word between CAST(0xDF AS CHAR) and CAST(0xDF AS CHAR);
word word2
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 0xDF;
word word2
select * from t1 where word like CAST(0xDF as CHAR);
word word2
drop table t1;
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 (
autor varchar(80) NOT NULL default '',
PRIMARY KEY (autor)
);
INSERT INTO t1 VALUES ('Powell, B.'),('Powell, Bud.'),('Powell, L. H.'),('Power, H.'),
('Poynter, M. A. L. Lane'),('Poynting, J. H. und J. J. Thomson.'),('Pozzi, S(amuel-Jean).'),
('Pozzi, Samuel-Jean.'),('Pozzo, A.'),('Pozzoli, Serge.');
SELECT * FROM t1 WHERE autor LIKE 'Poz%' ORDER BY autor;
autor
Pozzi, S(amuel-Jean).
Pozzi, Samuel-Jean.
Pozzo, A.
Pozzoli, Serge.
DROP TABLE t1;
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