题目内容

Question9: How can I get a list of the stores that have bought both
'bussiness' and 'mod_cook' type books？
In database pubs, use three table stores,sales and titles to implement this
equestment.
ow I want to get the result as below:
stor_id stor_name
------- ----------------------------------------
...
7896 Fricative Bookshop
...
...
...

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Question10: How can I list non-contignous data？
In database pubs, I create a table test using statement as below, and I
insert several row as below
create table test
(id int primary key )
go
insert into test values (1 )
insert into test values (2 )
insert into test values (3 )
insert into test values (4 )
insert into test values (5 )
insert into test values (6 )
insert into test values (8 )
insert into test values (9 )
insert into test values (11)
insert into test values (12)
insert into test values (13)
insert into test values (14)
insert into test values (18)
insert into test values (19)
go
Now I want to list the result of the non-contignous row as below,how can I
do it？
Missing after Missing before
------------- --------------
6 8
9 11
...

Question 1：Can you use a batch SQL or store procedure to calculating
the Number of Days in a Month

Question2：Can you use a SQL statement to calculating it!
How can I print "10 to 20" for books that sell for between $10 and $20，
"unknown" for books whose price is null, and "other" for all other prices？

巴拿赫病故于1945 年8 月31 日。他的出生年份恰好是他在世时某年年
龄的平方，问：他是哪年出生的？