i have a query with an inner select :
(SELECT SUM(marketing_fee) FROM answer WHERE user_id = m.id AND submit_dt between '2017-02-08 23:59:00' and '2017-02-15 23:59:00') as bookedamount,
the problem is that marketing_fee is a string and can be null, 'null' on any number (but as a string structure).
Is there a way to do a conversion in my select and add them together to get a single total figure that excludes the blanks and nulls?
Thanks
Try this instead:
(SELECT SUM(CASE WHEN marketing_fee is NULL THEN 0 ELSE CONVERT(marketing_fee, INTEGER)) FROM answer WHERE user_id = m.id AND submit_dt between '2017-02-08 23:59:00' and '2017-02-15 23:59:00') as bookedamount
Here's the documentation;
CONVERT
CASE
EDIT 1:
Try this simpler answer:
SELECT SUM(CASE WHEN marketing_fee is NULL OR marketing_fee = '' THEN 0 ELSE marketing_fee) as bookedamount
FROM answer
WHERE user_id = m.id
AND submit_dt between '2017-02-08 23:59:00' and '2017-02-15 23:59:00';
Related
Hello I'm new to mysqsl and I'm trying to display N/A if the return data is empty or NULL but my query is unrecognized statement type. What do you think is wrong with my query? wrong placement of code?
CASE when 'Earliest Time Opened' = '' or 'Earliest Time Opened' is 'Null'
then 'N/A'
ELSE
SELECT (date_format(d.date_opened, '%r') as 'Earliest Time Opened'
FROM daily_report d JOIN userinfo ui
ON d.userid= ui.id
WHERE d.date_opened >= date_sub(curdate(), interval 0 day)
AND d.survey_at_what_blh = 'Bagong Silang' AND ui.status='Employee'
ORDER BY d.date_opened DESC
limit 1
END
Use IF with ISNULL here:
SELECT IF(ISNULL(d.date_opened), 'N/A', DATE_FORMAT(d.date_opened, '%r')) AS `Earliest Time Opened`
FROM daily_report d
INNER JOIN userinfo ui ON d.userid = ui.id
WHERE
d.date_opened >= CURDATE() AND
d.survey_at_what_blh = 'Bagong Silang' AND
ui.status = 'Employee'
ORDER BY
d.date_opened DESC
LIMIT 1;
If you really wanted to use a CASE expression, then it would need to appear inside the select clause, something like this:
SELECT CASE WHEN DATE_FORMAT(d.date_opened, '%r') IS NOT NULL
THEN DATE_FORMAT(d.date_opened, '%r')
ELSE 'N/A' END AS `Earliest Time Opened`
But COALESCE is much more terse and appropriate here.
I want sum of payment status from two differnt columns based on paymentstatus value - but this query returns null for sum. Why is it not working?
select payment_status,
CASE
WHEN 'PAID' THEN sum(paid_amount)
when 'Not Paid' then sum(total_amount_due )
END
from monthly_fee
group by payment_status;
select sum(CASE WHEN payment_status = 'PAID' THEN paid_amount else 0 end) as paid,
sum(CASE WHEN payment_status = 'Not Paid' THEN total_amount_due else 0 end) as due
from monthly_fee
If you want this conditionally, you need to include the column in the case:
select payment_status,
(case payment_status
when 'Paid' then sum(paid_amount)
when 'Not Paid' then sum(total_amount_due )
end)
from monthly_fee
group by payment_status;
This seems like a strange way to write the query, unless you really want two rows.
Your WHEN clauses aren't a condition.
I'd expect to see something like
select payment_status,
CASE
WHEN payment_status = 'PAID' THEN sum(paid_amount)
when payment_status = 'Not Paid' then sum(total_amount_due )
END
from monthly_fee
group by payment_status;
You can try the following query:
select sum(if(payment_status = 'PAID', paid_amount, 0)
+ if(payment_status = 'Not Paid', total_amount_due, 0))
from monthly_fee
group by payment_status;
Have some ( difficult ) MySQL query
SELECT
*,
(
SELECT
MIN(tbl.id)
FROM
stat tbl
WHERE
tbl.id > stat.id
and tbl.user_id=stat.user_id
) next_session_id,
(
Select
(case
when next_session_id IS NULL then '9999-12-31 23:59:59' else sub.date
end)
from
stat sub
where
sub.id=next_session_id
) next_date
FROM
stat
WHERE
user_id=15973
and date >'2014-06-01'
Problem in next, for last row next_session_id are NULL(check in MySQL Workbench) and it must return datetime '9999-12-31 23:59:59', but return NULL. Check IS NULL not work i think or incorrect. Why it's happen?
UPDATE
Example of result set
You should add OR next_session_id IS NULL to the WHERE clause of your subselect
SELECT
(CASE
WHEN next_session_id IS NULL THEN '9999-12-31 23:59:59' ELSE sub.date
END)
FROM
stat sub
WHERE
sub.id=next_session_id OR next_session_id IS NULL
because without that the where condition will not be true, if next_session is null.
Try changing this part
Select
(case
when next_session_id IS NULL then '9999-12-31 23:59:59' else sub.date
end)
from
stat sub
where
sub.id=next_session_id
to
case
when next_session_id IS NULL then '9999-12-31 23:59:59' else (
Select sub.date
from
stat sub
where
sub.id=next_session_id)
end
Because in MySQL, NULL = NULL doesn't evaluate to true.
In database NULL and '' (empty string) are different. So ensure you have NULL value instead of '' (empty string) in your table.
Check this query with your table
SELECT * FROM TABLE WHERE next_session_id=''
I think IS NULL is not working because of some reason, so you can use = '',
for example x is null you can use x = '' instead.
Having some trouble figuring out the logic to this. See the two queries below:
Query 1:
SELECT cId, crId, COUNT(EventType)
FROM Data
WHERE EventType='0' OR EventType='0p' OR EventType='n' OR EventType = 'np'
GROUP BY crId;
Query 2:
SELECT cId, crId, COUNT(EventType) AS Clicks
FROM Data
WHERE EventType='c'
GROUP BY crId;
Was just wondering if there was a way to make the column that I would get at the end of query 2 appear in query 1. Since the where statements are different, not really sure where to go, and any subquery that I've wrote just hasn't worked.
Thanks in advance
SELECT cId, crId,
SUM(CASE WHEN EventType='0' OR EventType='0p' OR EventType='n' OR EventType = 'np' THEN 1 ELSE 0 END) AS Count_1,
SUM(CASE WHEN EventType='c' THEN 1 ELSE 0 END) AS Count_2
FROM Data
WHERE EventType IN ('0','0p','n','np','c')
GROUP BY crId;
You can join the two, using the second as a correlated subquery.
SELECT
Data.cId,
Data.crId,
COUNT(EventType) AS event_type_count,
click_counts.Clicks
FROM
Data
/* Correlated subquery retrieves the Clicks (EventType 'c') per cId */
LEFT JOIN (
SELECT cId, crId, COUNT(EventType) AS Clicks
FROM Data
WHERE EventType='c'
GROUP BY crId
) AS click_count ON Data.cId = click_count.cId AND Data.crId = click_count.crId
/* OR chain replaced with IN() clause */
WHERE Data.EventType IN ('0','0p','n','np')
/* This GROUP BY should probably also include Data.cId... */
GROUP BY Data.crId;
You can do this all querying from the table once and using CASE statements.
SELECT cId, crId,
SUM(CASE WHEN EventType IN ('0', '0p', 'n', 'np') THEN 1 ELSE 0 END) as events,
SUM(CASE WHEN EventType = 'c' THEN 1 ELSE 0 END) as clicks
FROM Data
WHERE EventType IN ('0', '0p', 'n', 'np', 'c')
GROUP BY crId;
You want to use IN?
SELECT cId, crId, COUNT(EventType) as Clicks
FROM Data
WHERE EventType IN ('0','0p','n','np','c')
GROUP BY crId;
:) PUtting myself in right direction ;)
sqlfiddle demo
select id, crid,
count(case when type <> 'c'
then crid end) count_others,
count(case when type ='c'
then crid end) count_c
from tb
group by crid
;
I'm trying to fetch data from table where I'm using a CASE condition in the WHERE clause and currently I'm using following query:-
SELECT count(enq_id) AS total, sum(purchase_amount) AS purchase
FROM temp_stock
WHERE purchase_date <> '0000-00-00'
AND purchase_date < '2012-08-01'
AND (
STATUS = 'Sold'
OR STATUS = 'In Stock'
OR STATUS = 'Ref'
)
AND CASE WHEN (
STATUS = 'Sold'
)
THEN delivery_date >= '2012-08-01'
END
But it returns 0 for total and NULL for purchase.
From your comment.
I want to use Case Statement, could u pls clarify me about case statament in where clause
You can use CASE statement in WHERE like this:
SELECT count(enq_id) AS total, sum(purchase_amount) AS purchase
FROM temp_stock
WHERE purchase_date <> '0000-00-00'
AND purchase_date < '2012-08-01'
AND ( STATUS = 'Sold'
OR STATUS = 'In Stock'
OR STATUS = 'Ref')
AND CASE STATUS
WHEN 'Sold'
THEN delivery_date >= '2012-08-01'
ELSE 1=1
END
Here you need to use ELSE 1=1. otherwise you will not get desired result. For more explanation see this SQLFiddle
I don't think that CASE can work that way. What you want is a slightly more complex expression as your WHERE clause. Probably something like this:
SELECT count(enq_id) AS total, sum(purchase_amount) AS purchase
FROM temp_stock
WHERE purchase_date <> '0000-00-00'
AND purchase_date < '2012-08-01'
AND (
(STATUS = 'Sold' AND delivery_date >= '2012-08-01')
OR STATUS = 'In Stock'
OR STATUS = 'Ref'
)