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
Related
I am using PSQL.
I have a table with a few columns, one column is event that can have 4 different values - X1, X2, Y1, Y2. I have another column that is the name of the service and I want to group by using this column.
My goal is to make a query that take an event and verify that for a specific service name I have count(X1) == count(X2) if not display a new column with "error"
Is this even possible? I am kinda new to SQL and not sure how to write this.
So far I tried something like this
select
service_name, event, count(service_name)
from
service_table st
group by
(service_name, event);
I am getting the count of each event for specific service_name but I would like to verify that count of event 1 == count of event 2 for each service_name.
I want to add that each service_name have a choice of 2 different event only.
You may not need a subquery/CTE for this, but it will work (and makes the logic easier to follow):
WITH event_counts_by_service AS (SELECT
service_name
, COUNT(CASE WHEN event='X1' THEN 1 END) AS count_x1
, COUNT(CASE WHEN event='X2' THEN 1 END) AS count_x2
FROM service_table
GROUP BY service_name)
SELECT service_name
, CASE WHEN count_x1=count_x2 THEN NULL ELSE 'Error' END AS are_counts_equal
FROM event_counts_by_service
I am Using SQL Server and i have the following Problem and i am hopping someone could help me.
I am getting this Error
Column 'TransactionsLine.Text' is invalid in the select list because it is not contained in either an aggregate function or the GROUP BY clause.
I do not want to include Text in the GROUP BY Clause yes that makes the query run but the issue is there is other text in the field i do not want it grouping by i would just like to replace the Name with the Text for items matching the CASE
when i add Text to the group by i get this result.
43036 SPECIAL 73.0000
43036 SPECIAL 6.0000
Issue is exactly what the error says. You are selecting TransactionsLine.text which is not in the group by clause.
you probably want to put the case in your group by clause:
select StockItemCode as CODE,
(
case
when StockItems.Description like 'item%'
then TransactionsLine.text
else StockItems.Description
end
) as name,
SUM(ItemQuantity) as Sales
from Transactions
inner join TransactionsLine on Transactions.id = TransactionsLine.TransactionID
inner join StockItems on TransactionsLine.StockItemID = StockItems.id
where location = #location
and Department = 43
and Transactions.date between #FROM
and #TO
and TransactionTypeID in (3, 32)
group by StockItemCode,
case
when StockItems.Description like 'item%'
then TransactionsLine.text
else StockItems.Description
end
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.
SELECT DISTINCT Invoice.InvNo, Invoice.OrderNo, Part.PartNo,
orders.orddate AS Order_Date, Invoice.InvDate AS Bill_Date,
MiscChg.Descr, MiscChg.RegFee, Invoice.InvAmt,
Orders.ClaimNo, Firm.FirmName AS Ordering_Firm,
**oppatty.attyid(WHERE oppatty.attyfor = 13)**, Location.Name1 AS Location
The bolded section is the part I'm having trouble with. I know what I have isn't right, but it demonstrates what I would like to accomplish. In the oppatty table, there could be several items listed. I want it to only display "AttyID for the entry that has an ATTYFOR = 13".
Hope this make sense, thanks
Jack
You need to add a CASE WHEN to the select statement.
SELECT DISTINCT
Invoice.InvNo,
Invoice.OrderNo,
Part.PartNo,
orders.orddate AS Order_Date,
Invoice.InvDate AS Bill_Date,
MiscChg.Descr,
MiscChg.RegFee,
Invoice.InvAmt,
Orders.ClaimNo,
Firm.FirmName AS Ordering_Firm,
CASE WHEN oppatty.AttyFor = 13
THEN oppatty.AttyId
ELSE '' END AS attyfor,
Location.Name1 AS Location
FROM
.........
This will display the AttyId field when the row's AttyFor field is equal to 13 and show an empty string when it's not.
Your query has no from or where clause and your question is a bit jumbled, but even so, I think I understand what you want to do. Assuming it's acceptable to fill the "AttyID" values with null where "AttyFor" isn't equal to 13, then you could just use a case statement. Try something like this
select
stuff.things,
case
where oppatty.attyfor <> 13 then null
else oppatty.attyid
end as attyid,
stuff.others
from
oppatty
join stuff on oppatty.ID = stuff.ID
If that's not your desired result, and you'd rather entirely exclude rows where "AttyFor" isnt equal to 13, then just use a where clause.
select
stuff.things,
oppatty.attyid,
stuff.others
from
oppatty
join stuff on oppatty.ID = stuff.ID
where
oppatty.attyfor = 13
The title is not claryifying my problem but this is how i could describe it.
I have a query which returns the following result :
and i was wondering if there is a way to reduce the number of lines from three to one having all the three no null values ( 400, 1000 and 21820 in one line ) with banquet as description.
Thank you for reading.
PS: this is just a capture of a part of the query results and there are a lot of duplicated lines. i can post my query if it would be helpful. i'm using some select case there..
EDIT:
THANK YOU guys but i solved that by copying the results of the main query to input of another one and adding distinct and sum clauses
SELECT description, MAX(number1) AS number1, MAX(number2) AS number2)
FROM myTable
GROUP BY description
At last in Oracle, you can use "When"
Eg:
SELECT
DESCRIPTION,
CASE WHEN SUMPRICE1 IS NULL THEN
CASE WHEN SUMPRICE2 IS NULL THEN
CASE WHEN SUMPRICE3 IS NULL THEN
0
ELSE SUMPRICE3 END
ELSE SUMPRICE2 END
ELSE SUMPRICE1 END AS SUMPRICE
FROM MY_TABLE
GROUP BY DESCRIPTION, SUMPRICE
Off course this is useble just if you have a static number of columns.
EDIT: I think I don't get the problem, but, if you don't want to merge the columns, you can use:
SELECT DESCRIPTION,
MAX(SUMPRICE1) AS SUMPRICE1,
MAX(SUMPRICE2) AS SUMPRICE2,
MAX(SUMPRICEN) AS SUMPRICEN
FROM MY_TABLE
GROUP BY DESCRIPTION
Or you can use the case to avoid the null, in the case of any of rows don't have a value:
SELECT DESCRIPTION,
CASE WHEN MAX(SUMPRICE1) IS NULL THEN 0 ELSE WHEN MAX(SUMPRICE1) END AS SUMPRICE1,
CASE WHEN MAX(SUMPRICE2) IS NULL THEN 0 ELSE WHEN MAX(SUMPRICE2) END AS SUMPRICE2,
CASE WHEN MAX(SUMPRICEN) IS NULL THEN 0 ELSE WHEN MAX(SUMPRICEN) END AS SUMPRICEN
FROM MY_TABLE
GROUP BY DESCRIPTION