I want to fetch data where Max(isPresent) == 1.
isPresent is my bit column
SELECT EmpID FROM EMPtable where Max(isPresent) = 1
How can I Achieve this one.?
I assume the problem is that there are multiple rows per employee in EMPtable in spite of its name, and so you can't simply say WHERE isPresent = 1 because it would return too many rows.
You can convert it to a different type first (but you need to group in some way, otherwise you'll still get multiple rows per employee):
SELECT EmpID FROM dbo.EMPtable
GROUP BY EmpID
HAVING Max(CONVERT(tinyint,isPresent)) = 1;
Or:
SELECT EmpID FROM dbo.EMPtable AS e
WHERE EXISTS (SELECT 1 FROM dbo.EMPtable
WHERE EmpID = e.EmpID AND isPresent = 1)
GROUP BY EmpID;
Or:
WITH e AS (SELECT EmpID, pos = ROW_NUMBER() OVER
(PARTITION BY EmpID ORDER BY EmpID)
FROM dbo.EMPtable
WHERE isPresent = 1)
SELECT EmpID FROM e WHERE pos = 1;
The method you use depends on what else you expect to return along with the EmpID. Here is an example fiddle.
Though this is largely a variation of greatest-n-per-group.
Or perhaps something as simple as:
SELECT DISTINCT EmpID FROM EMPtable where isPresent = 1
Related
I have a dataset which returns a number of row, 2 columns RoomType and FaultTypeName should be grouped but those 2 columns also have 1 'Result' column. Because of the 'Result' column the grouping will fail. So to make it clearer, the result set looks as follows:
The FaultTypeName are always the same three values 'Methode (M)', 'Periodiek (P)' or Vuil (V). These values should be returned as new columns with respectively their result values. So above resultset should be returned as following:
I already tried to do something with the rownumber (hence the rn column) but this didn't quite work out:
select
...
from(
select MeasurementId, RoomType, FaultTypeName, Result,
row_number() over(partition by RoomType order by RoomType, FaultTypeName) rn
from vwReportData
where measurementid = 1382596
)sub
There is a possibility that only 2 (or less) of the 3 columns (Methode, Periodiek and Vuil) are returned instead of all 3 (so less rows), if this is the case, the missing FaultTypeName(s) should still be added as column but with a result of 0.
Any ideas how I can get the right output?
Try this:
select *
from
(
select MeasurementId, RoomType, FaultTypeName, Result,
row_number() over(partition by RoomType order by RoomType, FaultTypeName) rn
from vwReportData
where measurementid = 1382596
) DS
PIVOT
(
MAX(result) for rn in ([1], [2], [3])
) PVT
In the end I figured it out myself:
SELECT
MeasurementId,
RoomType,
M = ISNULL(MIN(CASE WHEN FaultTypeName = 'Methode (M)' THEN Result ELSE NULL END), 0),
P = ISNULL(MIN(CASE WHEN FaultTypeName = 'Periodiek (P)' THEN Result ELSE NULL END), 0),
V = ISNULL(MIN(CASE WHEN FaultTypeName = 'Vuil (V)' THEN Result ELSE NULL END), 0)
FROM vwReportData
WHERE MeasurementId = 1382596
GROUP BY MeasurementId, RoomType
I want to update my attendance table on basis of the following condition.
NonWorking type is 1
If its previous day or next attendance type is Absent then I want to mark NonWorking type is LWP in DAOthers Column.
I think you can use LAG() and LEAD() here to peek at the preceding and proceeding values of the attendance type. Then, if one of those should be absent, mark the NonWorking column appropriately.
WITH cte AS (
SELECT *,
LAG(AttendanceType, 1, 'Present') OVER (ORDER BY ADate) AS lag_at,
LEAD(AttendanceType, 1, 'Present') OVER (ORDER BY ADate) AS lead_at
FROM yourTable
)
UPDATE cte
SET NonWorking = 1
WHERE lag_at = 'Absent' OR lead_at = 'Absent'
I am not sure whether you want an sql query to update existing data or a solution which is needed while making an entry.
Use below query to update existing data:
Update AttendanceTable set DaOthers =
(select top 1 'LWP' from AttendanceTable at1
where AttendanceTable.EmployeeId = at1.EmployeeId
and DATEADD(day, -1,AttendanceTable.ADate) = at1.ADate
and at1.NonWorking = 1)
Table befor executing above query:
Table after executing above query:
To update at the time of inserting record:
If you want to update while inserting data then you may need to set a variable first then use that variable while inserting. In the first query you need to use ADate and EmployeeID.The Nonworking is always 1.
DECLARE #DaOthers nvarchar(20) = (select top 1 'LWP' from AttendanceTable at
where DATEADD(day, 1, at.ADate) ='2017-02-04' and at.NonWorking = 1 and EmployeeId = 1)
insert into AttendanceTable
(NonWorking, ADate, AttendanceType, EmployeeId, DaOthers)
values
(0,'2017-02-04', 'Present', 1,#DaOthers)
With CTE as
(
SELECT *,
DATEADD(DAY, 1, Lag(ADate, 1,ADate)
OVER (PARTITION BY DAttendanceId ORDER BY ADate ASC)) AS EndDate
FROM tbl_DailyAttendance where EmployeeId = 1001 and AMonth = 2 and AYear = 2017 and AttendanceType = 'Absent' and NonWorking = 0
)
--select * from CTE
select * from tbl_DailyAttendance tda inner join CTE c on tda.ADate = c.EndDate where tda.EmployeeID = 1001 and tda.NonWorking = 1 order by tda.ADate
This is how i do for checking the conditions
since you hvn't provided sample data,so try to understand my query and correct if anything minor.
;WITH CTE as
(
select *
,isnull((select 1 from tbl_DailyAttendance tdb
where ((tdb.adate=DATEADD(day,-1,tda.adate))
or (tdb.adate=DATEADD(day,1,tda.adate)))
and attendancetype='Absent'
),0) NewnonWorkingType
from tbl_DailyAttendance tda
)
--Testing purpose
--select * from cte
update tda
set nonworking=b.NewnonWorkingType
,daOther=case when b.NewnonWorkingType=1 then 'LWP'
else null end
from tbl_DailyAttendance tda
inner join cte b on tda.id=b.id
While using case when in where clause in sql query it's not working.
Problem :
I have two tables named TblEmployee and TblAssociate.Both tables contains common columns PeriodId, EmpId and AssociateId. My requirement is to fetch values from
TblEmployee with combination of EmpId and AssociateId from TblAssociate should be excluded.And the exclusion should be based on PeriodId condition.`
If(#PeriodID<50)
BEGIN
SELECT *
FROM TblEmployee
WHERE (EmpId+AssociateId) NOT IN (SELECT EmpId+AssociateId FROM TblAssociate)
END
ELSE
BEGIN
SELECT *
FROM TblEmployee
WHERE (EmpId) NOT IN (SELECT EmpId FROM TblAssociate)
END
The above code is working, but I need to avoid that IF-ELSE condition and I wish to use 'case when' in where clause.Please help
Try this:
SELECT *
FROM TblEmployee
WHERE (EmpId + CASE WHEN #PeriodID<50 THEN AssociateId ELSE 0 END) NOT IN
(SELECT EmpId + CASE WHEN #PeriodID<50 THEN AssociateId ELSE 0 END FROM TblAssociate)
You say your code is working but this is rather odd, since it doesn't make much sense to add together id values. In any case, the above statement produces a result that is equivalent to the code originally posted.
You could use AND-OR combination in the WHERE clause. Additionally, you should not be using + as it may lead to incorrect result. You can rewrite your query as:
SELECT e.*
FROM TblEmployee e
WHERE
(
#PeriodID < 50
AND NOT EXISTS(
SELECT 1
FROM TblAssociate a
WHERE
a.EmpId = e.EmpId
AND a.AssociateId = e.AssociateId
)
)
OR
(
#PeriodID >= 50
AND NOT EXISTS(
SELECT 1
FROM TblAssociate a
WHERE a.EmpId = e.EmpId
)
)
The addition of IDs do not guarantee uniqueness. For instance, if EmpId is 5 and AssociateId is 6, then EmpId + AssociateId = 11, while EmpId + AssociateId = 11 even if EmpId is 6 and AssociateId is 5. In the query below, I made sure that the subquery will stop searching when the first record is found and will return a single record, having the value of 1. We select the employee if and only if 1 is among the results. In the subquery we check the operand we are sure of first and then check if we are not in a period where AssociateId must be checked, or it matches.
select *
from TblEmployee
where 1 in (select top 1 1
from TblAssociate
where TblEmployee.EmpId = TblAssociate.EmpId and
(#PeriodID >= 50 or TblEmployee.AssociateId = TblAssociate.AssociateId))
Post has been revised!!!....
I need help on the WHERE condition as the following:
ID# 1 belongs to Engineering Department.
ID# 2 belongs to Sales Department
ID# 3 belongs to Other Department.
ID# 4 belongs to Eng-Level2 department
ID# 5 belongs to Eng-Level3 department
ID# 6 belongs to Eng-Level4 department
What I try to accomplish is, if ID# 1 log run this report, it will show the activities belong to him (ID# 1), AND Eng-Levelx (ID#4, ID#5, and ID#6). However, if ID belongs to another Departments (ID# 2 & 3), will ONLY show the activities below to his/her.
Here is my non working query:
SELECT * FROM dbo.CRM_Activity
WHERE
(ActivityOwnerID = 1579
AND [Status] = 'Open'
AND Status <> 'Deleted')
OR
ActivityOwnerID IN (
SELECT COALESCE(
(SELECT Tech_ID FROM dbo.employee WHERE tech_ID = 1579 and POSITION = 'Engineering')
, (SELECT Tech_ID FROM dbo.employee WHERE LEFT(first_name, 4) = 'Eng-') --- THIS ONE FAILED BECAUSE IT RETURNS MULTIPLE RECORDS
)
)
AND [Status] = 'Open'
ORDER BY CreatedDate DESC
You could just use UNION instead, so this will get a list of unique Tech_ID's from both queries.
SELECT * FROM dbo.CRM_Activity
WHERE
ActivityOwnerID IN (
SELECT Tech_ID FROM dbo.employee WHERE tech_ID = 1579 and POSITION = 'Engineering'
UNION
SELECT Tech_ID FROM dbo.employee WHERE LEFT(first_name, 4) = 'Eng-'
)
In your case SELECT COALESCE(.... can return more than one value because IN allows multiple values, but result of SELECT Tech_ID FROM dbo.employee WHERE tech_ID = 1579 and POSITION = 'Engineering' or so must be one because COALESCE expects expression (not result set).
I am new to recursive CTEs. I am trying to develop a CTE which will return all of the employees under each manager name. So I have two tables: people_rv and staff_rv
People_rv table contains all of the people, both managers and employees. Staff_rv only contains manager information. Uniqueidentifier staff values are stored in Staff_rv. Uniqueidentifier employee values are stored in people_rv. People_rv contains varchar first and last name values for both managers and employees.
But when I run the following CTE I get an error:
WITH
cteStaff (ClientID, FirstName, LastName, SupervisorID, EmpLevel)
AS
(
SELECT p.people_id, p.first_name, p.last_name, s.supervisor_id,1
FROM people_rv p JOIN staff_rv s on s.people_id = p.people_id
WHERE s.supervisor_id = '95E16819-8C3A-4098-9430-08F0E3B764E1'
UNION ALL
SELECT p2.people_id, p2.first_name, p2.last_name, s2.supervisor_id, r.EmpLevel + 1
FROM people_rv p2 JOIN staff_rv s2 on s2.people_id = p2.people_id
INNER JOIN cteStaff r on s2.staff_id = r.ClientID
)
SELECT
FirstName + ' ' + LastName AS FullName,
EmpLevel,
(SELECT first_name + ' ' + last_name FROM people_rv p join staff_rv s on s.people_id = p.people_id
WHERE s.staff_id = cteStaff.SupervisorID) AS Manager
FROM cteStaff
OPTION (MAXRECURSION 0);
My output is:
Barbara G 1 Melanie K
Dawn P 1 Melanie K
Garrett M 1 Melanie K
Stephanie P 1 Melanie K
Amanda F 1 Melanie K
Amanda T 1 Melanie K
Stephanie G 1 Melanie K
Carlos H 1 Melanie K
So it is not iterating any more than the first level. Why not?
Melanie is the top most supervisor, but each of the persons in the leftmost column are also supervisors. So this query should also return level 2.
You may be in an infinite loop with your join. I would check how many levels you expect the table to actually go down. Generally you join a recursion on something similar to do
ID = ParentID
of something either contained in a table or in an expression. Keep in mind you can also create a CTE prior to a recursive CTE if you have to make up your relationship.
Here is an example that will self execute, it may help.
Declare #table table ( PersonId int identity, PersonName varchar(512), Account int, ParentId int, Orders int);
insert into #Table values ('Brett', 1, NULL, 1000),('John', 1, 1, 100),('James', 1, 1, 200),('Beth', 1, 2, 300),('John2', 2, 4, 400);
select
PersonID
, PersonName
, Account
, ParentID
from #Table
; with recursion as
(
select
t1.PersonID
, t1.PersonName
, t1.Account
--, t1.ParentID
, cast(isnull(t2.PersonName, '')
+ Case when t2.PersonName is not null then '\' + t1.PersonName else t1.PersonName end
as varchar(255)) as fullheirarchy
, 1 as pos
, cast(t1.orders +
isnull(t2.orders,0) -- if the parent has no orders than zero
as int) as Orders
from #Table t1
left join #Table t2 on t1.ParentId = t2.PersonId
union all
select
t.PersonID
, t.PersonName
, t.Account
--, t.ParentID
, cast(r.fullheirarchy + '\' + t.PersonName as varchar(255))
, pos + 1 -- increases
, r.orders + t.orders
from #Table t
join recursion r on t.ParentId = r.PersonId
)
, b as
(
select *, max(pos) over(partition by PersonID) as maxrec -- I find the maximum occurrence of position by person
from recursion
)
select *
from b
where pos = maxrec -- finds the furthest down tree
-- and Account = 2 -- I could find just someone from a different department
Your problem as far as I can tell is is you have no join connecting managers to their employees.
This join
INNER JOIN cteStaff r on r.StaffID = s2.staff_id
Just joins the same initial level 1 staffer back to himself.
UPDATE:
Still not quite right! You have a supervisor_id, but again you're still not actually using that to join back to the CTE.
So for each recursion of this CTE you need to (excluding the name join):
select {Level 1 Boss}, NULL (no supervisor)
union
select {new employee}, {that employee's boss}
So the join must connect the CTE's ClientID (the level 1 boss) to the second UNION query's supervisor field, which looks to be supervisor_id , not staff_id.
The JOIN to accomplish this second task is (from what I can tell of your staff_rv table schema):
SELECT p2.people_id, p2.first_name, p2.last_name, s2.supervisor_id, r.EmpLevel + 1
FROM people_rv p2 JOIN staff_rv s2 on s2.people_id = p2.people_id
INNER JOIN cteStaff r on s2.supervisor_id = r.ClientID
Note the bottom join joins the r.ClientID (the level 1 boss) to the staffer's supervisor_id field.
(NB: I think your staff_id and supervisor_id's mimic your people_id values from the people_rv table, so this join should work fine. But if they are different (i.e. a staffer's supervisor_id isn't that supervisor's people_id) then you'll need to write the join such that the staffer's supervisor_id can be joined to their people_id you're storing as ClientID in the CTE.)
Here's a good simple Recursive CTE to review (it may not be the answer, but someone else searching on how to make a recursive CTE may need it):
-- Recursive CTE
;
WITH Years ( myYear )
AS (
-- Base case
SELECT DATEPART(year, GETDATE())
UNION ALL
-- Recursive
SELECT Years.myYear - 1
FROM Years
WHERE Years.myYear >= 2002
)
SELECT *
FROM Years
Note that this probably won't solve your problem, but is a means to hopefully seeing where you're going wrong in the original query.
The default is 100 levels of recursion - you can set it to unlimited by using the MAXRECURSION query hint where you're selecting from your CTE:
...
FROM cteStaff
OPTION (MAXRECURSION 0);
From MSDN:
MAXRECURSION number
Specifies the maximum number of recursions allowed for this query. number is a nonnegative integer between 0 and 32767. When 0 is
specified, no limit is applied. If this option is not specified, the
default limit for the server is 100.
When the specified or default number for MAXRECURSION limit is reached during query execution, the query is ended and an error is
returned.
Because of this error, all effects of the statement are rolled back. If the statement is a SELECT statement, partial results or no
results may be returned. Any partial results returned may not include
all rows on recursion levels beyond the specified maximum recursion
level.