資料庫行轉列
『壹』 請幫忙把下面資料庫錶行變列吧
select t.欄位1,
sum(decode(t.欄位3, '2', 欄位4,null)) as 欄位3,
sum(decode((t.欄位3, 600', 欄位4,null)) as 欄位3,
sum(decode(t.欄位3, '50', 欄位4,null)) as 欄位3 ，
sum(decode(t.欄位3, '100', 欄位4,null)) as 欄位3
from 表名字 t
group by t.欄位1
order by t.欄位1
『貳』 sql中行變成列
這是一個行列轉換的問題嘛，可以用case when then來做
select sno,
sum(case course when '語文' then source else 0 end) as 語文,
sum(case course when '數學'then source else 0 end) as 數學
from 表名 group by sno
關於行列轉換的詳細介紹你可以在網上找找，這個問題個人感覺比較重要，建議多看看
『叄』 sql語句行轉列 怎麼轉啊
--聲明變數
declare@sqlvarchar(1000),@num_dataint,@num_allvarchar(2000),@num_numint,@table_sqlvarchar(2000)
set@num_num=0
--判斷並創建表
ifexists(select*fromdbo.sysobjectswhereid=object_id(N'[dbo].[records]')andOBJECTPROPERTY(id,N'IsUserTable')=1)
droptable[dbo].[records]
createtablerecords(
[id]int,
[name]varchar(50),
[sex]varchar(10),
[num]int
)
--插入數據
insertintorecordsvalues(1,'tom','男',2)
insertintorecordsvalues(1,'tom','男',3)
insertintorecordsvalues(1,'tom','男',4)
insertintorecordsvalues(1,'tom','男',5)
--全選表中數據
select*fromrecords
--全選num列數據
selectnumas'數據'fromrecords
--釋放游標
deallocateselect_num
--為『selectnumfromrecords』建立游標
declareselect_numscrollcursorforselectnumas'shuju'fromrecords
--打開游標
openselect_num
--獲得第一條數據
fetchnextfromselect_numinto@num_data
set@num_all=convert(varchar,@num_data)+','
set@num_num=@num_num+1;
--如果獲取成功，繼續獲得數據
while@@fetch_status=0
begin
fetchnextfromselect_numinto@num_data
set@num_num=@num_num+1;
set@num_all=@num_all+convert(varchar,@num_data)+','
end
--關閉游標
closeselect_num
print@num_num
--set@num_num=@num_num-1;
declare@iint
set@i=1
print@num_num
print@i
set@table_sql='createtablenumall(idint,namevarchar(50),sexvarchar(10)'
print@table_sql
while@num_num>=1
begin
set@table_sql=@table_sql+',num'+convert(varchar,@i)+'int'
set@num_num=@num_num-1;
set@i=@i+1
end
set@table_sql=@table_sql+')'
print@table_sql
ifexists(select*fromdbo.sysobjectswhereid=object_id(N'[dbo].[numall]')andOBJECTPROPERTY(id,N'IsUserTable')=1)
droptable[dbo].[numall]
exec(@table_sql)
declare@insert_sqlvarchar(2000)
set@insert_sql='insertintonumallvalues(1,'+'''tom'','+'''男'''
print@insert_sql
openselect_num
--獲得第一條數據
fetchnextfromselect_numinto@num_data
set@insert_sql=@insert_sql+','+convert(varchar,@num_data)
--如果獲取成功，繼續獲得數據
while@@fetch_status=0
begin
fetchnextfromselect_numinto@num_data
set@insert_sql=@insert_sql+','+convert(varchar,@num_data)
end
set@insert_sql=@insert_sql+')'
print@insert_sql
exec(@insert_sql)
--insertintonumallvalues(1,'tom','男',2,3,4,5,5)
select*fromnumall
試試吧，數據雖然有點出入，但已經說明問題了！！！
『肆』 sql server 行轉列
創建測試表
createtabletest
(_keyvarchar(10),
_valuevarchar(10),
idint)
insertintotestvalues('ceshi','測試值',10)
insertintotestvalues('ceshi','測試值',11)
insertintotestvalues('ceshi2','測試值2',11)
執行
declare@sqlvarchar(4000)
set@sql='selectid'
select@sql=@sql+',max(case_keywhen'''+[_key]+'''then[_value]end)as
['+_key+']'
from(selectdistinct_keyfromtest)asa
select@sql=@sql+'fromtestgroupbyid'
exec(@sql)
結果
額，我那個第三條數據id寫錯了，不過方法還是這個
『伍』 sql行轉列
SELECT e.NAME as name,
count(case when DATEPART(year,c.START_TIME)=2014 then 1 else null end ) as count2014,
count(case when DATEPART(year,c.START_TIME)=2015 then 1 else null end ) as count2015
from ENVI_DATA_STATISTIC_COMP c
LEFT JOIN ENVI_CITY e on e.CITY_ID=c.CITY_ID
where c.COMP_NAME like '%藍天白雲%' and INDEX_TYPE='12'
and (c.START_TIME like '%2014-08%' or c.START_TIME like '%2015-08%' ) and STATISTIC_TYPE='1' and c.VALID_FLAG='1'
group by name
應該是醬紫的，使用case when 轉換~
『陸』 怎樣實現sql行轉列
--試一試。。。
createtable#test
(
姓名nvarchar(10),
學號nvarchar(10),
題號nvarchar(10),
答案nvarchar(10)
)
go
insertinto#test
select'張三','001','1','A'unionall
select'張三','001','2','C'unionall
select'李四','002','1','B'unionall
select'李四','002','2','D'
select*from#test
dECLARE@sqlVARCHAR(max)
SET@sql=''
SELECT@sql=@sql+',['+題號+']'FROM#testGROUPBY題號
SET@sql=STUFF(@sql,1,1,'')
SET@sql='select*from#testpivot(max(答案)for題號in('+@sql+'))a'
PRINT@sql
exec(@sql)
『柒』 資料庫SQL實現行轉列。請懂的人幫忙，謝謝！
沒有環境,試試下面語句可否實現(oracle):
select Customer.CustomerId,
Customer.CustomerName
wm.concat(Phone.PhoneNumber)
from Customer left join
(
select CustomerPhone.CustomerId,
Phone.PhoneNumber
from CustomerPhone inner join Phone on CustomerPhone.PhoneId=Phone.PhoneId
order by CustomerPhone.CustomerId
)Phone on Customer.CustomerId=Phone.CustomerId
『捌』 sql 行轉列
最簡答的方法：使用程序數組，例如你現在的代碼是：
do while not rs.eof
response.write rs("....")
rs.movenext
end do
那麼可以下面這樣輸出：
'先為每個欄位定義數組
dim a(1)
dim b(1)
n=1
do while not rs.eof
a(n)=rs("a")
b(n)=rs("b")
'...有多少欄位寫多少行....
n=n+1
rs.movenext
end do
'下面再輸出
response.write "<table>";
response.write "<tr><td>" & join("<td>",a)
response.write "<tr><td>" & join("<td>",b)
response.write "</table>";
你的ASP程序不可能顯示多少條，一般每頁顯示20條左右，用數組在顯示的轉換是可行的。
『玖』 SQL 行轉列
我這里兩種都給你介紹，行轉列和列轉行：
列轉行——
錄入經營范圍時候會遇到列傳行的問題解決方案如下：
在temp1 表有一下欄位內容：