{"id":292,"date":"2022-01-20T11:08:00","date_gmt":"2022-01-20T03:08:00","guid":{"rendered":"https:\/\/www.keioi.cn\/?p=292"},"modified":"2022-01-20T11:08:11","modified_gmt":"2022-01-20T03:08:11","slug":"sql%e6%96%b0%e5%bb%ba%e4%b8%a4%e4%b8%aa%e8%a1%a8%e5%b9%b6%e4%bd%bf%e7%94%a8%e8%a7%a6%e5%8f%91%e5%99%a8%e3%80%82","status":"publish","type":"post","link":"https:\/\/www.keioi.cn\/archives\/292","title":{"rendered":"SQL\u65b0\u5efa\u8868\u5e76\u4f7f\u7528\u89e6\u53d1\u5668\uff0c\u89c6\u56fe\u7b49\u3002"},"content":{"rendered":"\n

\u65b0\u5efa<\/p>\n\n\n\n

CREATE TABLE [dbo].[books](
[ids] [int] not null primary key identity ,—\u5173\u952e\u5b57\uff0c \u81ea\u589e
[totols] [int] , –\u603b\u6570
[price] [numeric](18, 0) , –\u4ef7
[locat] varchar<\/a> (200)<\/a> ,–\u4f4d\u7f6e
[stat] [int] NULL,—\u72b6\u6001
[kind] varchar(200)<\/a>,—\u79cd\u7c7b
[bkname] varchar<\/a> (200)<\/a> ,—\u4e66\u540d\u5b57
[note] varchar<\/a> (200)<\/a> ,–\u5907\u6ce8
[due] [date] —\u65e5\u671f
);<\/p>\n\n\n\n

\u63d2\u5165\u4e00\u4e9b\u6570\u636e<\/p>\n\n\n\n

insert into books (totals,price,locat,stat,kind,bkname,note,due) values (3,28,’\u4e00\u5c421′,1,’\u6587\u5b66’,’\u4e09\u4f53’,”,’2021-10-15′)\uff0c
(2,20,’\u4e00\u5c421′,1,’\u751f\u6d3b’,’\u5ddd\u83dc\u8c31’,”,’2021-10-17′),
(5,20,’\u4e8c\u5c421′,1,’\u6587\u5b66’,’\u4e09\u8a00’,”,’2021-10-17′);<\/p>\n\n\n\n

\u7b49\u7b49<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u66f4\u6539\u5b57\u6bb5\u540d<\/p>\n\n\n\n

exec sp_rename ‘books.totols’,’totals’;<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u5efa\u4e00\u4e2a\u6570\u91cf\u660e\u7ec6\u8868<\/p>\n\n\n\n

CREATE TABLE bookqty(
ids int IDENTITY(1,1) NOT NULL,
totals int ,
[bkname] varchar<\/a>(200)
)<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u89e6\u53d1\u5668<\/strong><\/p>\n\n\n\n

\u60f3\u8981\u4e66\u672c\u6570\u91cf\u66f4\u65b0\u4e3a0\u72b6\u6001\u81ea\u52a8\u53d8\u4e3a0\u3002\u66f4\u65b0books\u6570\u91cfbookqty\u6570\u91cf\u4e5f\u540c\u65f6\u66f4\u65b0.<\/p>\n\n\n\n

\u63d2\u5165books\u8868\u65b0\u8d44\u6599\u4e5f\u540c\u65f6\u63d2\u5165bookqty<\/p>\n\n\n\n

\u4e00\u822c<\/p>\n\n\n\n

update books set stat=0 where totols=0; \u66f4\u65b0\u72b6\u6001<\/p>\n\n\n\n

<\/p>\n\n\n\n

insert into bookqty (totals,bkname) select totals,bkname from books \u6765\u66f4\u65b0bookqty\u8868<\/p>\n\n\n\n

\u5728books\u52a0\u4e00\u4e2aupdate\u89e6\u53d1\u5668\u6765<\/p>\n\n\n\n

create trigger [dbo].[upstat]
on [dbo].[books]
after update
as<\/p>\n\n\n\n

if update(totals) –\u6709\u66f4\u65b0\u5230totals\u5b57\u6bb5
begin
update books set stat=0 where totals=0
update books set stat=1 where totals<>0
update bookqty
set totals=books.totals
from bookqty,books
where books.bkname=bookqty.bkname
end<\/p>\n\n\n\n

go<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u5f53\u66f4\u65b0books\u6570\u91cf bookqty \u5c31\u4f1a\u540c\u6b65\u66f4\u65b0\u4ee5\u4e0a\u4e24\u4e2a\u5185\u5bb9\u3002<\/p>\n\n\n\n

<\/p>\n\n\n\n

\u5728books\u52a0\u4e00\u4e2ainsert\u89e6\u53d1\u5668 <\/p>\n\n\n\n

create trigger [dbo].[upqty]
on [dbo].[books]
after insert
as
begin<\/p>\n\n\n\n

insert into bookqty(totals,bkname) select totals,bkname from books where bkname not in(select bkname from bookqty) –\u63d2\u5165books\u5185\u6709\u4f46bookqty\u8868\u5185\u6ca1\u6709\u7684<\/p>\n\n\n\n

end<\/p>\n\n\n\n

go<\/p>\n\n\n\n

\u5f53\u63d2\u5165books\u65b0\u8d44\u6599bookqty\u5c31\u4f1a\u540c\u6b65\u66f4\u65b0\u5185\u5bb9\u3002 <\/p>\n\n\n\n

\u89c6\u56fe<\/strong><\/p>\n\n\n\n

\u65b0\u5efa\u4e00\u4e2a\u5b9a\u4e49\u72b6\u6001\u8868<\/p>\n\n\n\n

CREATE TABLE [dbo].[bstat](
[ids] [int] IDENTITY(1,1) NOT NULL,
[stat] [int] ,
[name] varchar<\/a>(200)
)<\/p>\n\n\n\n

\u6dfb\u52a0\u6570\u636e ,0\u4e3a\u7981\u501f\uff0c1\u4e3a\u53ef\u501f\u3002<\/p>\n\n\n\n

insert into bstat ( stat , name ) values (0,’\u7981\u501f’)\uff0c
( 1,’\u53ef\u501f’ );<\/p>\n\n\n\n

\u521b\u5efa\u89c6\u56fe\uff0c\u67e5\u8be2\u662f\u5426\u53ef\u501f<\/p>\n\n\n\n

create view qtyinv as
select bstat.name,books.bkname,books.totals from books
left join bstat on books.stat=bstat.stat;<\/p>\n\n\n\n

<\/p>\n\n\n\n

select * from qtyinv<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u67e5\u6bcf\u5c42\u603b\u6570\u3002\u521b\u5efa\u89c6\u56fe\u3002<\/p>\n\n\n\n

create view qtylocat as
select sum(totals) as total,LEFT(locat,2) as locat from books group by LEFT(locat,2)<\/p>\n\n\n\n

go<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u7c7b\u4f3c\uff0c\u53ef\u4ee5\u521b\u5efa\u67e5\u6bcf\u7c7b\u7684\u603b\u6570\uff0c\u4e0d\u505a\u8bf4\u660e\u3002<\/p>\n\n\n\n

\u51fd\u6570<\/strong><\/p>\n\n\n\n

\u5728\u4e66\u2018\u4e09\u8a00\u2019\u8bb0\u5f55\u7684\u5907\u6ce8\u63d2\u5165\u4e00\u4e2a\u5907\u6ce8<\/p>\n\n\n\n

update books set note=’\u5168\u540d\uff1a\u4e09\u8a00\u4e24\u62cd\uff0c\u4f4d\u7f6e\uff1a\u4e00\u5c421′ where bkname=’\u4e09\u8a00’;<\/p>\n\n\n\n

\u5199\u4e2a\u51fd\u6570\u53ef\u4ee5\u53d6\u5168\u540d\u6216\u4f4d\u7f6e\u7684\u3002<\/p>\n\n\n\n

create function note_arg
(
@note nvarchar(max),— \u53c2\u6570 \u67d0\u5b57\u6bb5\u5185\u5bb9
@k NVARCHAR(30) –\u67d0\u5b57\u7b26
)
returns nvarchar(max)
as
begin
declare @f bit=1
if CHARINDEX(@k,@note)<=0 return null –\u6ca1\u6709\u67d0\u5b57\u7b26\u8fd4\u56denull <\/p>\n\n\n\n

while @f=1<\/p>\n\n\n\n

begin<\/p>\n\n\n\n

if CHARINDEX(@k,@note,2)>1–\u6709\u5c31\u622a\u53d6\u5b57\u7b26\u540e\u9762\u7684\u5185\u5bb9
set @note=SUBSTRING(@note,CHARINDEX(@k,@note,2),LEN(@note))
else
set @f=0
end
while CHARINDEX(‘ ‘,@note)>0 –\u540e\u9762\u6709\u4e24\u7a7a\u683c\u66ff\u6362\u4e3a\u4e00\u4e2a\u7a7a\u683c
begin
set @note=REPLACE(@note,’ ‘,’ ‘)
end
set @note=REPLACE(@note,’\uff1a’,’:’) —\u66ff\u6362\u540e\u9762\u7684\u7b26\u53f7\u4e3a,
set @note=REPLACE(@note,’\uff0c’,’,’)
set @note=REPLACE(@note,’ ,’,’,’)
set @note=REPLACE(@note,’;’,’,’)
set @note=REPLACE(@note,’ ;’,’,’)
set @note=REPLACE(@note,’|’,’,’)
set @note=REPLACE(@note,’ ‘,’,’)
if CHARINDEX(‘,’,@note)>1 —\u622a\u53d6,\u524d\u9762\u7684
set @note=SUBSTRING(@note,1,CHARINDEX(‘,’,@note)-1)
return REPLACE(@note,@k,”)
end<\/p>\n\n\n\n

\u51fd\u6570\u5982\u4e0a\uff0c\u53ef\u4ee5\u622a\u53d6\u67d0\u5b57\u7b26\u540e\u548c\u67d0\u7b26 \u53f7\u524d\u7684\u5185\u5bb9\u3002<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n

\u5b58\u50a8\u8fc7\u7a0b<\/strong><\/p>\n\n\n\n

\u5199\u4e24\u4e2a\u5b58\u50a8\u8fc7\u7a0b\uff0c\u5b9e\u73b0\u52a0\u51cf\u4e66\u7c4d\u6570\u91cf\u3001<\/p>\n\n\n\n

\u589e\u52a0<\/p>\n\n\n\n

CREATE proc addbook
@name nvarchar(30),–\u53c2\u6570 \u4e66\u540d
@i int —\u589e\u52a0\u591a\u5c11
as
declare @n int
if exists(select * from books where bkname=@name) –\u662f\u5426\u5b58\u5728\u8bb0\u5f55
begin
select @n=totals from books where bkname=@name
set @n=@n+@i
if @n<=20 –\u4e0d\u80fd\u8d85\u8fc7\u5b58\u653e\u4e0a\u9650
begin
update books set totals=@n where bkname=@name
end
else
begin
RAISERROR(‘\u5927\u4e8e\u53ef\u5b58\u91cf!’,10,1)
end
end
else
begin
RAISERROR(‘\u4e0d\u5b58\u5728!’,10,1)
end<\/p>\n\n\n\n

GO<\/p>\n\n\n\n

<\/p>\n\n\n\n

\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n
\"\"<\/figure>\n\n\n\n

\u51cf\u5c11\uff0c\u7c7b\u4f3c<\/p>\n\n\n\n

CREATE proc reducebook
@name nvarchar(30),
@i int
as
declare @n int
if exists(select * from books where bkname=@name)
begin
select @n=totals from books where bkname=@name
if @n>=@i –\u4e0d\u80fd\u8d85\u8fc7\u5e93\u5b58
begin
set @n=@n-@i
update books set totals=@n where bkname=@name
end
else
begin
RAISERROR(‘\u5927\u4e8e\u5e93\u5b58!’,10,1)
end
end
else
begin
RAISERROR(‘\u4e0d\u5b58\u5728!’,10,1)
end
GO<\/p>\n\n\n\n

<\/p>\n","protected":false},"excerpt":{"rendered":"

\u65b0\u5efa CREATE TABLE ...<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4],"tags":[],"class_list":["post-292","post","type-post","status-publish","format-standard","hentry","category-4"],"_links":{"self":[{"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/posts\/292","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/comments?post=292"}],"version-history":[{"count":6,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/posts\/292\/revisions"}],"predecessor-version":[{"id":306,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/posts\/292\/revisions\/306"}],"wp:attachment":[{"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/media?parent=292"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/categories?post=292"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.keioi.cn\/api\/wp\/v2\/tags?post=292"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}