I've got a case function within my select query. Within this case I want to convert "SongLength" which is in seconds into and mm:ss format with the SEC_TO TIME function. However I get a syntax error upon putting this function in there.
select SongTitle,Artist,SongLength
case
when SongLength < 600 then
sec_to_time(SongLength)
else
sec_to_time(SongLength)
end
from Songs, Artists where Songs.ArtistId = Artists.Id
order by SongTitle;
Try SongLength to make an alias as :
select SongTitle,Artist,
(case
when SongLength < 600 then
sec_to_time(SongLength)
else
sec_to_time(SongLength)
end) as SongLength
from Songs join Artists
on ( Songs.ArtistId = Artists.Id )
order by SongTitle;
see below example works fine
select case
when 400 < 600 then
sec_to_time(400)
else
sec_to_time(300)
end as col
it returns below output
col
00:06:40
So if your datatype of column SongLength is numeric then it should work
http://www.sqlfiddle.com/#!9/835f61/150
Related
Hello I have this query that i am trying to execute and i keep getting this error "Subquery returned more than 1 value. This is not permitted when the subquery follows =, !=, <, <= , >, >= or when the subquery is used as an expression.", Kindly help please.
DECLARE #NUMCOUNT BIT
Select #NUMCOUNT = (SELECT
CASE WHEN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ('A')
) IN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ( 'A','C') ) THEN 1 else 0 END AS NUMCOUNT1
FROM R5REQUISLINES JOIN
R5REQUISITIONS ON R5REQUISLINES.RQL_REQ = R5REQUISITIONS.REQ_CODE
GROUP BY R5REQUISLINES.RQL_REQ, R5REQUISITIONS.REQ_CODE,R5REQUISLINES.RQL_STATUS
)
IF #NUMCOUNT = '1'
begin
UPDATE R5REQUISITIONS
SET R5REQUISITIONS.REQ_STATUS = 'CP'
end
Ok, it sounds like what you actually want to do is update R5REQUISITIONS when there is no RQL_STATUS = 'C' in R5REQUISLINES, since you said you want to count the records where the RQL_STATUS is A and where it's A or C, and then do the update if the counts are the same.. You can greatly simplify this task with the following query:
UPDATE r5
SET r5.REQ_STATUS = 'CP'
FROM R5REQUISITIONS r5
WHERE NOT EXISTS (SELECT 1 FROM R5REQUISLINES r5q WHERE r5q.RQL_REQ = r5.REQ_CODE AND r5q.RQL_STATUS = 'C')
Your 'SELECT CASE' is returning more than 1 record, so it can't be assigned to #NUMBER. Either fix the sub-query to only return the record your looking for or hack it to return only 1 with a 'LIMIT 1' qualification.
I don't know what your data looks like so I can't tell you why your case subquery returns more records than you think it should.
Try running this and see what it returns, that will probably tell you wall you need to know:
SELECT
CASE WHEN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ('A')
) IN
(SELECT COUNT(R5REQUISLINES.RQL_REQ)
WHERE R5REQUISLINES.RQL_STATUS IN ( 'A','C')
)
THEN 1
ELSE 0
END AS NUMCOUNT1
FROM R5REQUISLINES JOIN
R5REQUISITIONS ON R5REQUISLINES.RQL_REQ = R5REQUISITIONS.REQ_CODE
GROUP BY R5REQUISLINES.RQL_REQ, R5REQUISITIONS.REQ_CODE,R5REQUISLINES.RQL_STATUS
If there is more than 1 row returned, that's where your problem is.
Working on a view that pulls from two table however in one table I need to select either one field or another depending on a third..it's the if else that has me stubbed.
Create view as
select
pens.PartNo,
pens.Title,
ranges.weight
if(pens.SpeacialOffer = 1 then pens.offer as Price else pens.Price)
from
pens, ranges
where
pens.penrange = ranges.id;
If the specialoffer is falged the the view needs to pull in the offer else it needs to pull in the Price.
What you need is a CASE operator:
CASE
WHEN condition
THEN value_a
ELSE value_b
END
So in your case:
CASE
WHEN pens.SpeacialOffer = 1
THEN pens.offer
ELSE pens.price
END
This replaces the entire column definition in your SELECT statement, so the whole view becomes:
Create View as
Select
pens.PartNo,
pens.Title,
ranges.weight,
Case
When pens.SpeacialOffer = 1
Then pens.offer
Else pens.price
End as Price
From
pens, ranges
Where
pens.penrange = ranges.id;
Use CASE, also converted the query to explicit join instead of implicit join
select pens.PartNo,
pens.Title,
ranges.weight,
(Case when
pens.SpeacialOffer = 1 then
pens.offer else pens.Price
end ) as Price
FROM pens,
JOIn ranges
ON pens.penrange = ranges.id;
Here's one way:
Create view as select
pens.PartNo,
pens.Title,
ranges.weight,
(pens.SpeacialOffer * pens.offer + (1 - pens.SpeacialOffer) * pens.price) as Price
from
pens,
ranges
where
pens.penrange = ranges.id;
I want to make a query where where i first check the current date with the date in a column and then base on that I am writing my case. this query is working fine individually but when
i am combining them its not working.
The queires are
SELECT MONTH(CURRENT_DATE)= SUBSTRING(yearmonth,6) FROM dp;
SELECT i,
CASE
WHEN DAY(CURRENT_DATE) =1 THEN `d1_v`
WHEN DAY(CURRENT_DATE) =2 THEN `d1_v`
END VALUE
FROM dp;
combined query..
SELECT i,
CASE
WHEN((MONTH(CURRENT_DATE ))= SUBSTRING(yearmonth,6) THEN
(CASE
WHEN DAY(CURRENT_DATE) = 1 THEN `d1_v`
WHEN DAY(CURRENT_DATE) = 2 THEN `d1_v`
END VALUE)END)Y
FROM dp
please guide me
You've to delete the '(' after the THEN:
SELECT i,
CASE
WHEN ((MONTH(CURRENT_DATE )) = SUBSTRING(yearmonth,6))THEN
CASE
WHEN DAY(CURRENT_DATE) = 1 THEN `day1_value`
WHEN DAY(CURRENT_DATE) = 2 THEN `day1_value`
END
END Y
FROM dp;
The output from the sqlfiddle is 5,null right now.
Hope this work for you.
The sqlfiddle is: http://sqlfiddle.com/#!2/e59c5/10
I'm trying to select different prices of a product based on the quantity that user chooses.
This is the query I'm working on (it has a syntax error):
select id,
(SELECT
IF(qty_1<='23',price,1)
ELSEIF(('23'>qty_1 && qty_2<='23'),price_2,1)
ELSEIF(('23'>qty_2 && qty_3<='23'),price_3,1)
ELSEIF('23'>qty_3,price_4,1)
END IF) as total
from product;
You have what you have used in stored procedures like this for reference, but they are not intended to be used as you have now. You can use IF as shown by duskwuff. But a Case statement is better for eyes. Like this:
select id,
(
CASE
WHEN qty_1 <= '23' THEN price
WHEN '23' > qty_1 && qty_2 <= '23' THEN price_2
WHEN '23' > qty_2 && qty_3 <= '23' THEN price_3
WHEN '23' > qty_3 THEN price_4
ELSE 1
END) AS total
from product;
This looks cleaner. I suppose you do not require the inner SELECT anyway..
IF() in MySQL is a ternary function, not a control structure -- if the condition in the first argument is true, it returns the second argument; otherwise, it returns the third argument. There is no corresponding ELSEIF() function or END IF keyword.
The closest equivalent to what you've got would be something like:
IF(qty_1<='23', price,
IF('23'>qty_1 && qty_2<='23', price_2,
IF('23'>qty_2 && qty_3<='23', price_3,
IF('23'>qty_3, price_4, 1)
)
)
)
The conditions don't all make sense to me (it looks as though some of them may be inadvertently reversed?), but without knowing what exactly you're trying to accomplish, it's hard for me to fix that.
I found a bug in MySQL 5.1.72 when using the nested if() functions .... the value of column variables (e.g. qty_1) is blank inside the second if(), rendering it useless. Use the following construct instead:
case
when qty_1<='23' then price
when '23'>qty_1 && qty_2<='23' then price_2
when '23'>qty_2 && qty_3<='23' then price_3
when '23'>qty_3 then price_4
else 1
end
For your question :
SELECT id,
IF(qty_1 <= '23', price,
IF(('23' > qty_1 && qty_2 <= '23'), price_2,
IF(('23' > qty_2 && qty_3 <= '23'), price_3,
IF(('23' > qty_2 && qty_3<='23'), price_3,
IF('23' > qty_3, price_4, 1))))) as total
FROM product;
You can use the if - else control structure or the IF function in MySQL.
Reference:
http://easysolutionweb.com/sql-pl-sql/how-to-use-if-and-else-in-mysql/
As per Nawfal's answer, IF statements need to be in a procedure. I found this post that shows a brilliant example of using your script in a procedure while still developing and testing. Basically, you create, call then drop the procedure:
https://gist.github.com/jeremyjarrell/6083251
Here is my query:
SELECT
CASE
WHEN hbn.users.showDistance = 'T'
THEN hbn.distance(u2.lat, u2.lon, hbn.users.lat, hbn,users,lon)
ELSE 0
END as distance,
hbn.users.id,
hbn.users.username,
From hbn.users,
(select hbn.users.lat, hbn.users.lon from hbn.users where hbn.users.id = '1') AS u2
where hbn.users.Id = '8';
This does not work!
I need to use output of the second select statement as input for distance() function.
It looks like you have commas instead of full-stops in the last parameter to hbn.distance?