I have a MySql table as,
Name Month Salary
=======================================
A Salary_Month_Sept 15000
A Salary_Month_Oct 0
B Salary_Month_Sept 12000
B Salary_Month_Oct 0
C Salary_Month_Sept 13000
C Salary_Month_Oct 0
and I am querying that table as
select Name,
max(IF(Month = 'Salary_Month_Sept', Salary, 0)) AS 'Salary_Month_Sept',
max(IF(Month = 'Salary_Month_Oct', Salary, 0)) AS 'Salary_Month_Oct'
from myTable
Which returns the query result as
Name Salary_Month_Sept Salary_Month_Oct
=============================================
A 15000 0
B 12000 0
C 17000 0
How can i ignore the column containing only zero or null values from the above query result.
Don't use *. Name columns you want to have. The query is not a crystal ball. It doesn't know in front if there will be data for the column. To do something like that you need 2 queries, assuming the salaries are only positive:
Select sum(salary_sept), sum(salary_oct), ... for the condition you need.
Create second select only for columns returning sum bigger than zero.
The SQL has no time machine, sorry. You have to do your work yourself.
Related
Want to generate a result of Open orders where Production is needed. At issue is each part may have more than one open order. With the GROUP BY my code gives me only one order but does give me the total Production_Needed (which is also a negative in value for orders with enough inventory).
Does my SUM(...) as Production_Needed need to be in the WHERE ?
Thanks,
SELECT part.part_ID AS Part_Part_ID,
part.Inventory, part.part_number,
ord.part_id AS Order_Part_ID,
ord.order_type, ord.quantity_ordered, ord.quantity_shipped,
SUM(ord.quantity_ordered - ord.quantity_shipped - part.Inventory) AS Production_Needed
FROM production_orders ord
JOIN production_part part ON ord.part_ID = part.part_ID
WHERE ord.is_Active = True AND ord.order_type = 0
GROUP BY Order_Part_ID
ORDER BY part.part_number ASC
Data Production_Part part
Part_ID
Part_Inventory
Part_Number
1
12500
97-528
2
0
FC2569
3
1000
39367
Data Production_Orders Ord
Order_Part_ID
Order_Type
Quantity_Ordered
Quantity_Shipped
1
0
8000
0
2
0
1000
500
2
0
1000
0
3
1
10
0
Desired Result - Only Parts that need production
Part_ID
Quantity_Ordered
Quantity_Shipped
2
1000
500
2
1000
0
Untested: need a sampled data set and structure for testing:
This creates an inline view and totals the inventory order amounts then stubtracts it from the inventory to determine if there is a production needed to fulfil open orders. I'd have to use some additional analytical functions if we needed to do this on an order by order basis however; or join these results back into the orders...
--Show parts which lack inventory to fullfill outstanding open orders.
SELECT
P.Part_ID as Part_Part_ID
, P.Inventory
, P.Part_Number
, O.Part_ID as Order_Part_ID
, UnDel_Units-coalesce(P.Inventory,0) as Production_Needed --use coalesce incase no part record exists for some reason.
FROM Production_Part P
RIGHT JOIN ( --use right join just incase part record doesn't exist for some reason
SELECT part_ID, SUM(quantity_ordered-quantity_shipped) as UnDel_Units
FROM PRODUCTION_ORDERS
WHERE IS_ACTIVE=TRUE
and ORDER_TYPE=0
GROUP BY PART_ID) O --derived table "O" for orders showing sum ottal by part of units undelivered
on O.Part_ID=P.Part_ID
WHERE UnDel_Units > coalesce(P.Inventory,0)
-- If inventory is > undelivered units for the part, ignore as additional production isn't needed
I have a table with a column called "Points", the value of this column have a min value of 0, and a max value of 100.000. I have to do an analysis per range of this column, so I wrote a query like this:
select case when Points between 0 and 5000 then '0 - 5000'
when Points between 5001 and 20000 then '50001 - 20000'
when Points > 20000 then '> 20000'
else 0 end RangeP
from Sales
The problem is that the customer wants to see for each 2.000 points from 0 to 100.000
If I wrote the query using the case, the query will get really big, so I'd like one way to get dynamically this range.
It is possible? Thank you very much
You may create a table which contains the ranges, and their text labels, and then join to it, e.g.
SELECT
s.Points,
COALESCE(r.label, 'range not found') AS range
FROM Sales s
LEFT JOIN
(
SELECT 0 AS start, 2000 AS end, '0 - 2000' AS label UNION ALL
SELECT 2001, 4000, '2001 - 4000' UNION ALL
...
SELECT 98000, 100000, '98000 - 100000'
) r
ON s.Points BETWEEN r.start AND r.end;
I have inlined the table of ranges, but you may create a formal table (or maybe a temp table) instead, and then replace the above subquery with just a reference to that table.
I m using mysql database using php to fetch data. I have distributor column, i m using WHERE clause like WHERE d_id = 1 . i have 1 to 4 distributors. On front end i have HTML select option in which if i select any distributor it shows it's data but i added an option value="0" as Total . Now if i select Total it should show all data, actually where clause should not work then. (show all distributors data)
Dist: Product Sales
1. dis_a abc 100
2. dis_b abc 50
3. dis_c cde 10
4. dis_c cde 10
Here is an example of a select that should do roughly what you want.
select d.[disc:], d.[Product], d.[Sales]
from your_table d
where d.your_table_seq = case when #dist_id = 0 then d.your_table_seq else #dist_id end
The case block will allow you pull every row when the #dist_id parameter is equal to 0, but will only pull id's that are equal to #dist_id when #dist_id is not equal to 0.
I have a problem with a MySQL query, the problem is I have the following table:
id, rep, val dates
1 rep1 200 06/01/2014
2 rep2 300 06/01/2014
3 rep3 400 06/01/2014
4 rep4 500 06/01/2014
5 rep5 100 06/01/2014
6 rep1 200 02/06/2014
7 rep2 300 02/06/2014
8 rep3 900 02/06/2014
9 rep4 700 02/06/2014
10 rep5 600 02/06/2014
and I want a result like this:
rep 01/06/2014 02/06/2014
rep1 200 200
rep2 300 300
rep3 400 900
rep4 500 700
rep5 100 600
thank you very much!
You seem to want the most recent row for each rep. Here is an approach that often performs well:
select t.*
from table t
where not exists (select 1
from table t2
where t2.repid = t.repid and
t2.id > t.id
);
This transforms the problem to: "Get me the rows in table t where there is no other row with the same repid and a larger id." That is the same logic as getting the last one, just convoluted a bit to help the database know what to do.
For performance reasons, an index on t(repid, id) is helpful.
You seem to want the val for each of the dates.
Assuming the dates you are interested in are fixed then you can do that as follows. For output date column you check of the row matches the date for that column. If so you use the value of val , if not you just use 0. Then you sum all the resulting values, grouping by rep. I have assumed a fixed format of date.
SELECT rep, SUM(IF(dates='2014/06/01'), val, 0) AS '2014/06/01', SUM(IF(dates='2014/06/02'), val, 0) AS '2014/06/02'
FROM sometable
GROUP BY rep
Or if you just wanted the highest val for each day
SELECT rep, MAX(IF(dates='2014/06/01'), val, 0) AS '2014/06/01', MAX(IF(dates='2014/06/02'), val, 0) AS '2014/06/02'
FROM sometable
GROUP BY rep
If the number of dates is variable then not really a direct way to do it (as the number of resulting columns would vary). It would be easiest to do this manly in your calling script based on the following, giving you one row per rep / possible date with a sum of the values of val for that rep / date combination:-
SELECT rep, sub0.dates, SUM(IF(sometable.dates=sub0.dates), val, 0)
FROM sometable
CROSS JOIN
(
SELECT DISTINCT dates
FROM sometable
) sub0
GROUP BY rep, sub0.dates
I am putting together a Crosstab and I want a report for multiple column values (all numbers) grouped by month. Here is the SQL I used. I understand that this won't bring back the desired results. every "timex" column has a different number in it. I want a query that will return the sum of the column grouped by month.
TRANSFORM Sum(tblTimeTracking.time1+ tblTimeTracking.time2+ tblTimeTracking.time3+ tblTimeTracking.time4+ tblTimeTracking.time5+ tblTimeTracking.time6+ tblTimeTracking.time7+ tblTimeTracking.time8+ tblTimeTracking.time9+ tblTimeTracking.time10+ tblTimeTracking.time11+ tblTimeTracking.time12+ tblTimeTracking.time13+ tblTimeTracking.time14+ tblTimeTracking.time15+ tblTimeTracking.time16+ tblTimeTracking.time17+ tblTimeTracking.time18+ tblTimeTracking.time19+ tblTimeTracking.time20+ tblTimeTracking.time21+ tblTimeTracking.time22 ) AS Total
SELECT tbl_vlookup.Manager AS Manager
FROM tbl_vlookup INNER JOIN tblTimeTracking ON tbl_vlookup.[Associate Name] = tblTimeTracking.Associate
GROUP BY tbl_vlookup.Manager
PIVOT Format([Day],"yyyy-mm");
Associate Day Time 1 Time 2 Time 3 Time 4 Time 5 Time 6 Time 7
John Smith 12/1/9999 1 0 0 5.5 1 0.25 0.25
Something like this:
TRANSFORM Sum(q.Time1) AS SumOfTime1
SELECT q.Associate, q.Day
FROM (SELECT t.Associate, t.Day, t.Time1,"Time1" As TimeType
FROM tbl t
UNION ALL
SELECT t.Associate, t.Day, t.Time2,"Time2" As TimeType
FROM tbl t
UNION ALL
SELECT t.Associate, t.Day, t.Time3,"Time3" As TimeType
FROM tbl t) AS q
GROUP BY q.Associate, q.Day
PIVOT q.TimeType;
As I mentioned, you need to flatten the table. It only seems to be different types of data :)