i would like to ask for help please in sql, I have a table in this form
ID | Indicator1 | Indicator2 | Indicator3 | Indicator4
1 | 1 | 0 | 0 | 0
2 | 0 | 1 | 1 | 0
3 | 1 | 1 | 0 | 0
4 | 0 | 0 | 0 | 0
And I would like to make it look like this
ID | Indicators
1 | Indicator1
2 | Indicator2
2 | Indicator3
3 | Indicator1
3 | Indicator2
4 | NULL
Any suggestions please ? Thank you
Use UNPIVOT.
SELECT p.Id,
p.Indicators,
p.IndicatorsValue
FROM TableName
UNPIVOT
(
IndicatorsValue FOR Indicators IN (Indicator1,Indicator2,Indicator3,Indicator4)
)AS p
select b.* from #temp a left join (
SELECT p.Id,
p.Indicators
FROM #temp
UNPIVOT
(
IndicatorsValue FOR Indicators IN (Indicator1,Indicator2,Indicator3,Indicator4)
)AS p
where p.IndicatorsValue <>0)b on a.id=b.id
Use UNPIVOT and add filter to remove unnecessary columns:
SELECT DISTINCT ID, Indicators
FROM #Indicator
UNPIVOT (IndicatorsValue
FOR Indicators IN (Indicator1,Indicator2,Indicator3,Indicator4)) AS up
WHERE up.IndicatorsValue <> 0
Related
I have table1 which contains ids [s1,s2,s3..Sn]
s1
s2
s3
I have another table2 containing indexes [0,1,2,..n].
0
1
2
3
I have third table3 [ids, start_index,stop_index]. eg:
s0 | 1 | 3 |
s0 | 4 | 6 |
s1 | 1 | 2 |
and so on. I want to create a pivot table which contains rows a s1,s2,s3... columns with 0,1,2,3.. content of the table should be either zero or 1.
---|0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |...
s0 |0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
s1 |0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
.
.
You can use a CROSS JOIN in concert with your index table and PIVOT the final results.
If you number of columns is variable, you would need DYNAMIC SQL
Example
Select *
From (
Select id
,item = a.[index]
,value = case when a.[index] between b.start_index and b.stop_index then 1 else 0 end
From table2 A
Cross Join table3 B
) src
Pivot (max(value) for Item in ([0],[1],[2],[3],[4],[5],[6],[7],[8],[9],[10]) ) pvt
Returns
I'm trying to find an efficient way to derive the column Expected below from only Id and State. What I want is for the number Expected to increase each time State is 0 (ordered by Id).
+----+-------+----------+
| Id | State | Expected |
+----+-------+----------+
| 1 | 0 | 1 |
| 2 | 1 | 1 |
| 3 | 0 | 2 |
| 4 | 1 | 2 |
| 5 | 4 | 2 |
| 6 | 2 | 2 |
| 7 | 3 | 2 |
| 8 | 0 | 3 |
| 9 | 5 | 3 |
| 10 | 3 | 3 |
| 11 | 1 | 3 |
+----+-------+----------+
I have managed to accomplish this with the following SQL, but the execution time is very poor when the data set is large:
WITH Groups AS
(
SELECT Id, ROW_NUMBER() OVER (ORDER BY Id) AS GroupId FROM tblState WHERE State=0
)
SELECT S.Id, S.[State], S.Expected, G.GroupId FROM tblState S
OUTER APPLY (SELECT TOP 1 GroupId FROM Groups WHERE Groups.Id <= S.Id ORDER BY Id DESC) G
Is there a simpler and more efficient way to produce this result? (In SQL Server 2012 or later)
Just use a cumulative sum:
select s.*,
sum(case when state = 0 then 1 else 0 end) over (order by id) as expected
from tblState s;
Other method uses subquery :
select *,
(select count(*)
from table t1
where t1.id < t.id and state = 0
) as expected
from table t;
select top 20 *
from dbo.DUTs D
inner join dbo.Statuses S on d.StatusID = s.StatusID
where s.Description = 'Active'
Above SQL Query returns the top 20 rows, how can I get a nth row from the result of the above query? I looked at previous posts on finding the nth row and was not clear to use it for my purpose.
Thanks.
The row order is arbitrary, so I would add an ORDER BY expression. Then, you can do something like this:
SELECT TOP 1 * FROM (SELECT TOP 20 * FROM ... ORDER BY d.StatusID) AS d ORDER BY d.StatusID DESC
to get the 20th row.
You can also use OFFSET like:
SELECT * FROM ... ORDER BY d.StatusID OFFSET 19 ROWS FETCH NEXT 1 ROWS ONLY
And a third option:
SELECT * FROM (SELECT *, rownum = ROW_NUMBER() OVER (ORDER BY d.StatusID) FROM ...) AS a WHERE rownum = 20
I tend to use CTEs with the ROW_NUMBER() function to get my lists numbered in order. As #zambonee said, you'll need an ORDER BY clause either way or SQL can put them in a different order every time. It doesn't usually, but without ordering it yourself, you're not guaranteed to get the same thing twice. Here I'm assuming there's a [DateCreated] field (DATETIME NOT NULL DEFAULT GETDATE()), which is usually a good idea so you know when that record was entered. This says "give me everything in that table and add a row number with the most recent record as #1":
; WITH AllDUTs
AS (
SELECT *
, DateCreatedRank = ROW_NUMBER() OVER(ORDER BY [DateCreated] DESC)
FROM dbo.DUTs D
INNER JOIN dbo.Statuses S ON D.StatusID = S.StatusID
WHERE S.Description = 'Active'
)
SELECT *
FROM AllDUTs
WHERE AllDUTs.DateCreatedRank = 20;
SELECT * FROM (SELECT * FROM EMP ORDER BY ROWID DESC) WHERE ROWNUM<11
It's another sample:
SELECT * ,CASE WHEN COUNT(0)OVER() =ROW_NUMBER()OVER(ORDER BY number) THEN 1 ELSE 0 END IsNth
FROM (
select top 10 *
from master.dbo.spt_values AS d
where d.type='P'
) AS t
+------+--------+------+-----+------+--------+-------+
| name | number | type | low | high | status | IsNth |
+------+--------+------+-----+------+--------+-------+
| NULL | 0 | P | 1 | 1 | 0 | 0 |
| NULL | 1 | P | 1 | 2 | 0 | 0 |
| NULL | 2 | P | 1 | 4 | 0 | 0 |
| NULL | 3 | P | 1 | 8 | 0 | 0 |
| NULL | 4 | P | 1 | 16 | 0 | 0 |
| NULL | 5 | P | 1 | 32 | 0 | 0 |
| NULL | 6 | P | 1 | 64 | 0 | 0 |
| NULL | 7 | P | 1 | 128 | 0 | 0 |
| NULL | 8 | P | 2 | 1 | 0 | 0 |
| NULL | 9 | P | 2 | 2 | 0 | 1 |
+------+--------+------+-----+------+--------+-------+
I have table with values
+--------+------------+-------------+
| XPK | Money | NumOfDevices|
+--------+------------+-------------+
| 1 | 1000 | 2 |
| 2 | 2000 | 3 |
| 3 | 3000 | 4 |
+--------+------------+-------------+
Need to sum all values and to enter the asterisk "*" in entire row to separate TOTAL Values from other values, so result need to look something like this
+--------+------------+-------------+
| XPK | Money | NumOfDevice |
+--------+------------+-------------+
| 1 | 1000 | 2 |
| 2 | 2000 | 3 |
| 3 | 3000 | 4 |
|***********************************|
| TOTAL | 6000 | 9 |
+--------+------------+-------------+
Any idea ?
The easiest way for this is to use a UNION selecting the totals from the table:
Select Convert(Varchar (10), XPK) XPK,
Money,
NumOfDevices
From YourTable
Union
Select 'TOTAL' As XPK,
Sum(Money),
Sum(NumOfDevices)
From YourTable
Order By Case When XPK = 'TOTAL' Then 1 Else 0 End, XPK
Another method of doing this would be to use a GROUP BY WITH ROLLUP
Select Case When Grouping(XPK) = 1
Then 'TOTAL'
Else Convert(Varchar (10), XPK)
End As XPK,
Sum(Money) Money,
Sum(NumOfDevices) NumOfDevices
From YourTable
Group By XPK With Rollup
Order By Grouping(XPK)
IN Table ERP System SAP
select B.ItemCode as'Item No.',B.Dscription as'Item Description',B.Quantity,B.Price as'Sale Amt',B.LineTotal as'Total'
from ODLN A
inner join DLN1 B On A.DocEntry=B.DocEntry
union all
select 'Total',convert(nvarchar(10),sum(case when b.Dscription is not null then 1 else 0 end)),sum(b.quantity),sum(b.price),sum(b.lineTotal)
from ODLN A
inner join DLN1 B On A.DocEntry=B.DocEntry
Got something like:
+-------+------+-------+
| count | id | grade |
+-------+------+-------+
| 1 | 0 | A |
| 2 | 0 | B |
| 1 | 1 | F |
| 3 | 1 | D |
| 5 | 2 | B |
| 1 | 2 | C |
I need:
+-----+---+----+---+---+---+
| id | A | B | C | D | F |
+-----+---+----+---+---+---+
| 0 | 1 | 2 | 0 | 0 | 0 |
| 1 | 0 | 0 | 0 | 1 | 1 |
| 2 | 0 | 5 | 1 | 0 | 0 |
I don't know if I can even do this. I can group by id but how would you read the count value for each grade column?
CREATE TABLE #MyTable(_count INT,id INT , grade VARCHAR(10))
INSERT INTO #MyTable( _count ,id , grade )
SELECT 1,0,'A' UNION ALL
SELECT 2,0,'B' UNION ALL
SELECT 1,1,'F' UNION ALL
SELECT 3,1,'D' UNION ALL
SELECT 5,2,'B' UNION ALL
SELECT 1,2,'C'
SELECT *
FROM
(
SELECT _count ,id ,grade
FROM #MyTable
)A
PIVOT
(
MAX(_count) FOR grade IN ([A],[B],[C],[D],[F])
)P
You need a "pivot" table or "cross-tabulation". You can use a combination of aggregation and CASE statements, or, more elegantly the crosstab() function provided by the additional module tablefunc. All basics here:
PostgreSQL Crosstab Query
Since not all keys in grade have values, you need the 2-parameter form. Like this:
SELECT * FROM crosstab(
'SELECT id, grade, count FROM table ORDER BY 1,2'
, $$SELECT unnest('{A,B,C,D,F}'::text[])$$
) ct(id text, "A" int, "B" int, "C" int, "D" int, "F" int);