create
table student(
id char(36
)primary
key,
name varchar(8
)not
null
, age int(3
)default0,
mobile char(11
),address varchar
(150))
insert
into student
values
('9b4435ec-372c-456a-b287-e3c5aa23dff4'
,'張三',24
,'12345678901'
,'北京海淀');
insert
into student
values
('a273ea66-0a42-48d2-a17b-388a2feea244'
,'李%四',10
,'98765432130'
,null);
insert
into student
values
('eb0a220a-60ae-47b6-9e6d-a901da9fe355'
,'張李三',11
,'18338945560'
,'安徽六安');
insert
into student
values
('6ab71673-9502-44ba-8db0-7f625f17a67d'
,'王_五',28
,'98765432130'
,'北京朝陽區');
insert
into student
values
('0055d61c-eb51-4696-b2da-506e81c3f566'
,'王_五%%',11
,'13856901237'
,'吉林省長春市寬平區'
);
1、%：匹配0次或多次
select
*from student where name like
'張三%'
;select
*from student where name like
'李%四'
;
select
*from student where name like
'張_'
;
注：escape後面單引號中只能是單個字元；
escape後面可以是字母、#、$、,、\等字元；
select
*from student where name like
'%a%%'
escape
'a';
select
*from student where name like
'%a_%'
escape
'a';
select
*from student where name like
'_a%_'
escape
'a';
select
*from student where name like
'_a__'
escape
'a';
#查詢張姓且位址中含有北京的學生資訊
select
*from student where name like
'張%'
and address like
'%北京%'
;#查詢張姓或位址中含有北京的學生資訊
select
*from student where name like
'張%'
or address like
'%北京%'
;
注：「between 下限 and 上限」一定是小值在前大值在後，否則查不出資料；
「between 下限 and 上限」查詢資料報括邊界值；
#查詢年齡在10~28之間的學生資訊
select
*from student where age between
10and28;
#上面sql語句等效於該sql語句
select
*from student where age >=
10and age<=
28;
select
*from student where age<28;
--查詢年齡小於28歲的學生資訊
select
*from student where age in(11
,24);
select
*from student where address is
null
;select
*from student where address is
notnull
;
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create table student id char 36 primary key,name varchar 8 not null,age int 3 default 0,mobile char 11 address varchar 150 insert into student values ...