题目内容

解释materialized views 的作用

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Question8: How can I list all California authors regardless of
whether they have written a book？
In database pubs, have a table authors and titleauthor , table authors has a
column state, and titleauhtor have books each author written.
CA behalf of california in table authors.

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
...
...
...

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