I want to write an SQL query to return rows with one distinct field and use CASE to create new evaluation column. Any help is appreciated. Deets below:
table
id
status
category
string
string
bigint
--------
--------
----------
pseudo query:
return (distinct id), time_created, NEW_COL
where category is 123123
and where new_col //create new col with these values
(
if status = 'good' then 'GOOD'
if status = 'bad' then 'BAD'
)
FROM table
result:
id
time_created
new_col
1
Jun-1
BAD
2
Jul-21
GOOD
3
Jun-12
GOOD
4
Aug-1
GOOD
--- I keep getting a lint error right on my CASE keyword:
"expecting " '%', '*', '+', '-', '.', '/', 'AT', '[', '||',""
one of queries I tried:
SELECT
ID, time_created
CASE
WHEN status = 'good' THEN 'GOOD'
WHEN status = 'bad' THEN 'BAD'
END
as STATUS_new
FROM TBL
WHERE CATEGORY = '871654671'
ORDER BY time_created
You just have a small syntax error (and bad column name in your sql fiddle). You just need a comma after the time created column.
SELECT
ID, time as time_created,
CASE
WHEN status = 'good' THEN 'GOOD'
WHEN status = 'bad' THEN 'BAD'
END
as STATUS_new
FROM TBL
WHERE CATEGORY = '871654671'
ORDER BY time_created
Here is the working query:
http://www.sqlfiddle.com/#!18/7293b5/11
SELECT
ID, TIME, 'STATUS_new' =
CASE STATUS
WHEN 'good' THEN 'GOOD'
WHEN 'bad' THEN 'BAD'
END
FROM TBL
WHERE CATEGORY = '871654671'
ORDER BY TIME
you must put the new name of the column before the CASE
the column you are defining the CASE must be defined directly behind the case and all the WHEN conditions are directly related to it.
in your fiddle you used the wrong column name of your TIME column
Related
I am trying to understand how to group values together to add an indicator. I want to 'fix' the values and based on this, attribute an indicator.
The values I am trying to group are date, customer name and product type to create an indicator which captures what kind of order was placed (fruit only, fruit and vegetable, vegetable only). The goal is to calculate the total volume of each kind of order placed. The data is set out like this, and the column I am trying to create is the 'Order Type.
What I have done so far:
I originally completed this analysis in Tableau ]where I was able to use the 'Fixed' function and sum the value of indicators (for fruit or veggie) to determine each order type individually.
I have written case statements to identify the product type, with the idea that I could sum this to determine order type (code below) however this did not work as I only need one instance of the indicator for each order. To solve this, I have written a case statement which partitions the fields and orders by date to get one instance of an indicator for each order.
Case Statements
CASE WHEN Product_Type = 'Fruit' THEN 1 ELSE 0 END AS Fruit_Indicator
, CASE WHEN Product_Type = 'Vegetable' THEN 1 ELSE 0 END AS Veg_Indicator
Case Statement with partition by and order by
, CASE WHEN ROW_NUMBER() OVER (PARTITION BY Order_Date, Customer ORDER BY Order_Date ASC) = 1 AND Product_Type = 'Fruit' THEN 1 ELSE NULL END AS Fruit_Ind
, CASE WHEN ROW_NUMBER() OVER (PARTITION BY Order_Date, Customer ORDER BY Order_Date ASC) = 1 AND Product_Type = 'Vegetable' THEN 1 ELSE NULL END AS Veg_Ind
I would appreciate any guidance on the right direction.
Thanks!
It APPEARS you are trying to get data grouped by date such as Mar 21, Mar 22, etc... So, you may want to have a secondary query to join the primary data from. The second query will be an aggregate by customer and date. If the date field is date/time oriented, you will have to adjust the group by to get proper formatted context such as date-format using month/day/year and ignoring any time component. This might also be handled by a function to just get the date-part and ignoring the time. Then, your original data to the aggregate should get you what you need. Maybe something like.
select
yt.date,
yt.customer,
yt.product,
yt.productType,
case when PreQuery.IsFruit > 0 and PreQuery.IsVegetable > 0
then 'Fruit & Vegetable'
when PreQuery.IsFruit > 0 and PreQuery.IsVegetable = 0
then 'Fruit Only'
when PreQuery.IsFruit = 0 and PreQuery.IsVegetable > 0
then 'Vegetable Only' end OrderType
from
YourTable yt
JOIN
( select
yt2.customer,
yt2.date,
max( case when yt2.ProductType = 'Fruit'
then 1 else 0 end ) IsFruit,
max( case when yt2.ProductType = 'Vegetable'
then 1 else 0 end ) IsVegetable
from
YourTable yt2
-- if you want to restrict time period, add a where
-- clause here on the date range as to not query entire table
group by
yt2.customer,
yt2.date ) PreQuery
ON yt.customer = PreQuery.customer
AND yt.date = PreQuery.date
-- same here for your outer query to limit just date range in question.
-- if you want to restrict time period, add a where
-- clause here on the date range as to not query entire table
order by
yt.date,
yt.customer,
yt.product
I have table 'workadress' and it contain 6 columns:
work_ref,work_street ,work_zip,workTN,...
I want to find duplicate rows in the same table depending on:
If (work_street, work_zip) are duplicate together, then you should look at workTN. If it is the same then put value ' ok ', but if workTN is not the same, put 'not ok'. How can I do it with SQL?
Result like:
You can use window functions:
select t.*,
(case when min(workTn) over (partition by work_street, work_zip) =
max(workTn) over (partition by work_street, work_zip)
then 'ok' else 'not ok'
end) as result
from t;
I think just a simple group by and count should be enough to do the job like so:
select
t.*,
case when dups.dups = 1 then 'OK' else 'not OK' end
from my_table t
join (
select work_street, work_zip, count(distinct workTN) dups
from my_table
group by work_street, work_zip
) dups on dups.work_street = t.work_street amd dups.work_zip = t.work_zip
Here is my query with the output below the syntax.
SELECT DISTINCT CASE WHEN id = 'RUS0261431' THEN value END AS sr_type,
COUNT(CASE WHEN id in ('RUS0290788') AND value in ('1','2','3','4') THEN respondentid END) AS sub_ces,
COUNT(CASE WHEN id IN ('RUS0290788') AND value in ('5','6','7') THEN respondentid END) AS pos_ces,
COUNT(*) as total_ces
FROM `some_table`
WHERE id in ( 'RUS0261431') AND id <> '' AND value IS NOT NULL
GROUP BY 1
As you can see with the attached table I'm unable to group the values based on Id RUS0290788 with the distinct values that map to RUS0261431. Is there anyway to pivot with altering my case when statements so I can group sub_ces and pos_ces by sr_type. Thanks in advanceenter image description here
You can simplify your WHERE condition to WHERE id = ('RUS0261431'). Only records with this value will be selected so you do not have to repeat this in the CASE statements.
So I'm trying to construct a query in BigQuery that I'm struggling with for a final part.
As of now I have:
SELECT
UNIQUE(Name) as SubscriptionName,
ID,
Interval,
COUNT(mantaSubscriptionIdmetadata) AS SubsPurchased,
SUM(RevenueGenerated) as RevenueGenerated
FROM (
SELECT
mantaSubscriptionIdmetadata,
planIdmetadata,
INTEGER(Amount) as RevenueGenerated
FROM
[sample_internal_data.charge0209]
WHERE
revenueSourcemetadata = 'new'
AND
Status = 'Paid'
GROUP BY
mantaSubscriptionIdmetadata,
planIdmetadata,
RevenueGenerated
)a
JOIN (
SELECT
id,
Name,
Interval
FROM
[sample_internal_data.subplans]
WHERE
id in ('150017','150030','150033','150019')
GROUP BY
id,
Name,
Interval )b
ON
a.planIdmetadata = b.id
GROUP BY
ID,
Interval,
Name
ORDER BY
Interval ASC
The resulting query looks like this
Which is exactly what I'm looking for up to that point.
Now what I'm stuck on this. There is another column I need to add called SalesRepName. The resulting field will either be null or not null. If its null it means it was sold online. If its not null, it means it was sold via telephone. What I want to do is create two additional columns where it says how many were sold via telesales and via online. The sum total of the two columns will always equal the SubsPurchased total.
Can anyone help?
You can include case statements within aggregate functions. Here you could choose sum(case when SalesRepName is null then 1 else 0 end) as online and sum(case when SalesRepName is not null then 1 else 0 end) as telesales.
count(case when SalesRepName is null then 1 end) as online would give the same result. Using sum in these situations is simply my personal preference.
Note that omitting the else clause is equivalent to setting else null, and null isn't counted by count. This can be very useful in combination with exact_count_distinct, which has no equivalent in terms of sum.
Try below:
it assumes your SalesRepName field is in [sample_internal_data.charge0209] table
and then it uses "tiny version" of SUM(CASE ... WHEN ...) which works when you need 0 or 1 as a result to be SUM'ed
SUM(SalesRepName IS NULL) AS onlinesales,
SUM(NOT SalesRepName IS NULL) AS telsales
SELECT
UNIQUE(Name) AS SubscriptionName,
ID,
Interval,
COUNT(mantaSubscriptionIdmetadata) AS SubsPurchased,
SUM(RevenueGenerated) AS RevenueGenerated,
SUM(SalesRepName IS NULL) AS onlinesales,
SUM(NOT SalesRepName IS NULL) AS telesales
FROM (
SELECT SalesRepName, mantaSubscriptionIdmetadata, planIdmetadata, INTEGER(Amount) AS RevenueGenerated
FROM [sample_internal_data.charge0209]
WHERE revenueSourcemetadata = 'new'
AND Status = 'Paid'
GROUP BY mantaSubscriptionIdmetadata, planIdmetadata, RevenueGenerated
)a
JOIN (
SELECT id, Name, Interval
FROM [sample_internal_data.subplans]
WHERE id IN ('150017','150030','150033','150019')
GROUP BY id, Name, Interval
)b
ON a.planIdmetadata = b.id
GROUP BY ID, Interval, Name
ORDER BY Interval ASC
I have the table with 1 column and has following data
Status
a1
i
t
a2
a3
I want to display the following result in my select query
Status| STATUSTEXT
a1 | Active
i | Inactive
t | Terminated
a2 | Active
a3 | Active
One way I could think was using a Switch When expression in select query
SELECT
status,
CASE status
WHEN 'a1' THEN 'Active'
WHEN 'a2' THEN 'Active'
WHEN 'a3' THEN 'Active'
WHEN 'i' THEN 'Inactive'
WHEN 't' THEN 'Terminated'
END AS StatusText
FROM stage.tst
Is there any other way of doing this where I don't need to write When expression 3 times for Active Status and the entire active status can be checked in one single expression?
You could use an IN clause
Something like
SELECT
status,
CASE
WHEN STATUS IN('a1','a2','a3')
THEN 'Active'
WHEN STATUS = 'i'
THEN 'Inactive'
WHEN STATUS = 't'
THEN 'Terminated'
END AS STATUSTEXT
FROM
STATUS
Have a look at this demo
SQL Fiddle DEMO
You can rewrite it to use the ELSE condition of a CASE:
SELECT status,
CASE status
WHEN 'i' THEN 'Inactive'
WHEN 't' THEN 'Terminated'
ELSE 'Active'
END AS StatusText
FROM stage.tst
Of course...
select case substr(status,1,1) -- you're only interested in the first character.
when 'a' then 'Active'
when 'i' then 'Inactive'
when 't' then 'Terminated'
end as statustext
from stage.tst
However, there's a few worrying things about this schema. Firstly if you have a column that means something, appending a number onto the end it not necessarily the best way to go. Also, depending on the number of status' you have you might want to consider turning this column into a foreign key to a separate table.
Based on your comment you definitely want to turn this into a foreign key. For instance
create table statuses ( -- Not a good table name :-)
status varchar2(10)
, description varchar2(10)
, constraint pk_statuses primary key (status)
)
create table tst (
id number
, status varchar2(10)
, constraint pk_tst primary key (id)
, constraint fk_tst foreign key (status) references statuses (status)
)
Your query then becomes
select a.status, b.description
from tst a
left outer join statuses b
on a.status = b.status
Here's a SQL Fiddle to demonstrate.
It will be easier to do using decode.
SELECT
status,
decode ( status, 'a1','Active',
'a2','Active',
'a3','Active',
'i','Inactive',
't','Terminated',
'Default')STATUSTEXT
FROM STATUS
Since web search for Oracle case tops to that link, I add here for case statement, though not answer to the question asked about case expression:
CASE
WHEN grade = 'A' THEN dbms_output.put_line('Excellent');
WHEN grade = 'B' THEN dbms_output.put_line('Very Good');
WHEN grade = 'C' THEN dbms_output.put_line('Good');
WHEN grade = 'D' THEN dbms_output.put_line('Fair');
WHEN grade = 'F' THEN dbms_output.put_line('Poor');
ELSE dbms_output.put_line('No such grade');
END CASE;
or other variant:
CASE grade
WHEN 'A' THEN dbms_output.put_line('Excellent');
WHEN 'B' THEN dbms_output.put_line('Very Good');
WHEN 'C' THEN dbms_output.put_line('Good');
WHEN 'D' THEN dbms_output.put_line('Fair');
WHEN 'F' THEN dbms_output.put_line('Poor');
ELSE dbms_output.put_line('No such grade');
END CASE;
Per Oracle docs: https://docs.oracle.com/cd/B10501_01/appdev.920/a96624/04_struc.htm
Following syntax would work :
....
where x.p_NBR =to_number(substr(y.k_str,11,5))
and x.q_nbr =
(case
when instr(substr(y.m_str,11,9),'_') = 6 then to_number(substr(y.m_str,11,5))
when instr(substr(y.m_str,11,9),'_') = 0 then to_number(substr(y.m_str,11,9))
else
1
end
)
SELECT
STATUS,
CASE
WHEN STATUS IN('a1','a2','a3')
THEN 'Active'
WHEN STATUS = 'i'
THEN 'Inactive'
WHEN STATUS = 't'
THEN 'Terminated' ELSE null
END AS STATUSTEXT
FROM
stage.tst;
You can only check the first character of the status. For this you use substring function.
substr(status, 1,1)
In your case past.
DECODE(SUBSTR(STATUS,1,1),'a','Active','i','Inactive','t','Terminated','N/A')