I am facing different kind of problem. In select query I want to add a temporary column on fly based on other columns value.
I have 2 columns
IsOpeningClosingDateToo (tinyint),
HearingDate Date
Now I want to check that if IsOpeningClosingDate = 1 then
Select HearingDate, HearingDate as 'OpeningDate'
If IsOpeningClosingDate= 2
Select HearingDate, HearingDate as 'ClosingDate'
I have tried to do this but failed:
SELECT
,[HearingDate]
,CASE [IsOpeningClosingDate]
when 1 then [HearingDate] as OpeningDate
When 0 then [HearingDate] as ClosingDate
end as 'test'
]
FROM [LitMS_MCP].[dbo].[CaseHearings]
I would suggest returning three columns. Then you can fetch the values in on the application side:
SELECT HearingDate,
(CASE WHEN IsOpeningClosingDate = 1 THEN HearingDate END) as OpeningDate,
(CASE WHEN IsOpeningClosingDate = 0 THEN HearingDate END) as ClosingDate
FROM [LitMS_MCP].[dbo].[CaseHearings];
Alternatively, you could just fetch HearingDate and IsOpeningClosingDate and do the comparison in Python.
The important point is that the columns in a SQL query are fixed by the SELECT. You cannot vary the names or types of the columns conditionally within the query.
Related
I need to get a state level count on number of services. For the purposes of this I only have two services. The first column is the states, the second column is the first services and the third column is the second service. What I am struggling with is to have the second and third column show up on the results in one query. Here is my code:
SELECT Distinct allstates.Name, count (data.StateName) as CareCase_Management_Services, count(data.StateName) Caregiver_Support_Services
From
(select distinct Name from USstate) allstates
Left Join
Client2017 data
on
allstates.Name = data.StateName and
data.FiscalYear = 2017 and
data.SrvstartCareCaseMgmtCode NOT IN('999','', '998') and
data.SrvstartCaregiverSuppCode NOT IN('999','', '998')
GROUP BY allstates.Name
ORDER BY allstates.Name ASC
I understand that you are looking to compute, for each state, the count of services that match certain criteria. There are two types of services, stored in two different columns.
If so, your query could be simplified using conditional aggregation :
SELECT
allstates.Name,
SUM(CASE WHEN c.SrvstartCareCaseMgmtCode NOT IN ('999', '', '998') THEN 1 ELSE 0 END) CareCase_Management_Services,
SUM(CASE WHEN c.SrvstartCaregiverSuppCode NOT IN ('999', '', '998') THEN 1 ELSE 0 END) Caregiver_Support_Services
FROM
(SELECT DISTINCT Name FROM USstate) s
LEFT JOIN Client2017 c ON s.Name = c.StateName AND c.FiscalYear = 2017
GROUP BY allstates.Name
With this technique, each service is counted according to its own logic ; when conditions are met, the record is counted in (1 is added to the SUM()), else it is ignored (+ 0).
NB : do you really have duplicated state names in USstate ? if no, you can replace subquery (SELECT DISTINCT Name FROM USstate) s with just USstate
I have one student grade of null that I manually need to add in the below as an f (to match a grade received and reported previously). I am trying to find a way to do this in SQL Server without having to do it in Excel.
Here is what I have in the select statement for the grades portion (also showing that I am doing the group by roll up at the end):
SELECT
CASE grouping (STC_GRADE)
WHEN 1 THEN 'total' ELSE STC_GRADE
END AS 'MARK ANALYSIS'....
GROUP BY ROLLUP (STC_GRADE)...
How would I add into that select statement that if the STC_GRADE IS NULL to count it as an F so that the results show as:
'38' `F`'s
instead of '1' null and '37' F's?
To replace a NULL with a non-NULL value, you use this:
SELECT ISNULL(stc_grade, 'F') AS stc_grade
FROM your_table
I have a file that i receive each morning which contains details of customers whos information doesnt meet certain criteria, i have built a script with many WHERE conditions that, if met, will show customers information and put them in a file but im having trouble finding out why they are wrong.
As i have many conditions in the where clause, is there a way to show which column has the incorrect information
For example i could have a table like this:
NAME|ADDRESS |PHONE|COUNTRY
John|123avenue |12345|UK
My conditions could be
SELECT * FROM CUSTOMERS
WHERE NAME LIKE 'J%'
AND LEFT(PHONE,1) = '1'
so it would show in the file as two conditions are met, but as i have over 80 rows and 40 conditions, its hard to look at each row and find out why its in their.
Is there a way i can add a column which will tell me which WHERE condition has been met?
As worded, no. You should reverse your logic. Add fields that show what's wrong, then use those fields in a WHERE clause.
SELECT
*,
CASE WHEN LEFT(phone, 1) = '1' THEN 1 ELSE 0 END AS phone_starts_with_1,
CASE WHEN LEFT(name, 1) = 'Z' THEN 1 ELSE 0 END AS name_starts_with_z
FROM
customers
WHERE
phone_starts_with_1 = 1
OR name_starts_with_z = 1
Depending on which dialect of SQL you use, you may need to nest this, such that the new fields are resolved before you can use them in the WHERE clause...
SELECT
*
FROM
(
SELECT
*,
CASE WHEN LEFT(phone, 1) = '1' THEN 1 ELSE 0 END AS phone_starts_with_1,
CASE WHEN LEFT(name, 1) = 'Z' THEN 1 ELSE 0 END AS name_starts_with_z
FROM
customers
)
checks
WHERE
phone_starts_with_1 = 1
OR name_starts_with_z = 1
I have been writing a query that allows me to select and count rows for specific product id's and shipment types.
Within this data, what I am now trying to achieve is count which rows have a specific field populated (second member name) and which have not. Then return this as a separate column in my query results.
Here's the query which I have written:
select count(job.JobID) as itemsCount, Lookup_Pack.PackDescription, Lookup_Pack.PackCode, Lookup_Pack.ID, job.shipping,
CASE
WHEN Job.secondMemForename <> '' THEN count(job.JobID)
ELSE 0
END AS [Extra card count]
from job
inner join Lookup_Pack on Lookup_Pack.ID = job.packTypeID
where Lookup_Pack.PackType = 'REN'
AND job.createDate >= '2015-06-01' and Job.createDate <= '2015-06-30'
GROUP BY Lookup_Pack.PackDescription, Lookup_Pack.PackCode, Lookup_Pack.ID, Job.shipping
If I run this query, I get an error returned as I am not grouping by Job.secondMemForename:
[FreeTDS][SQL Server]Column 'job.secondMemForename' is invalid in the
select list because it is not contained in either an aggregate
function or the GROUP BY clause.
although Job.secondMemForename does not form part of the query results.
I have subsequently added this field to the GROUP BY statement, the problem with this is that the data returned for all rows where the CASE applies is un-grouped as the Job.secondMemForename is different for all of them.
Any idea how I can resolve this?
Thanks.
Steeve.
Change Count() to Sum() and add it before CASE
SUM (CASE WHEN Job.secondMemForename <> '' THEN 1 END) AS [Extra card count]
I have to provide counts for different activities, some of the columns are from some table but few I have to take by joining other tables. And in the last column I have to add counts *of 5 columns togather in one field*.Please see my query below and advice the best way to achieve my results :)
SELECT web. OID,web. MARKETING_GROUP,
SUM(DECODE(WEB.EVENT_TYPE,5,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONCOMMENT ,
SUM(DECODE(WEB.EVENT_TYPE,6,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONSTART ,
SUM(DECODE(WEB.EVENT_TYPE,7,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONVIEW,
SUM(case when o.when _clicked is not null then c(*))AS clickcount,
**SUM(case when WEB.EVENT_TYPE in(5,6,7,8)then WEB.ACTIVITY_COUNT +c.count(*))as Total** --------- This is where I am getting stuck and confused???
from GMMI_AIR.WEB_ACTIVITY_FCT WEB join GMMI_AIR.COUPON_WEB_ACTIVITY C
on WEB.OID_WEB_ACTIVITY_FCT = C.OID_COUPON_WEB_ACTIVITY
I am really stuck as the table which is joined doesn'thave field named activity_count or activity_type so to see the counts I can only do count(*) but to add it all other fileds in one column and sum it up is very confusing??
Any help??/
SELECT web. OID,web. MARKETING_GROUP,
SUM(DECODE(WEB.EVENT_TYPE,5,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONCOMMENT ,
SUM(DECODE(WEB.EVENT_TYPE,6,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONSTART ,
SUM(DECODE(WEB.EVENT_TYPE,7,WEB.ACTIVITY_COUNT,0)) AS DISCUSSIONVIEW,
SUM(case when o.when _clicked is not null then c(*))AS clickcount,
SUM(case when WEB.EVENT_TYPE in(5,6,7,8)then WEB.ACTIVITY_COUNT END) +c.count(*) as Total
from GMMI_AIR.WEB_ACTIVITY_FCT WEB join GMMI_AIR.COUPON_WEB_ACTIVITY C
on WEB.OID_WEB_ACTIVITY_FCT = C.OID_COUPON_WEB_ACTIVITY
GROUP BY web. OID,web. MARKETING_GROUP;