Maybe I'm overlooking something, but none of the answers I found solve my problem. I'm trying to get the sum and average from a column, but everything I see is getting sum and average from a row.
Here is the query I'm using:
SELECT product_name,unit_cost,units,total,SUM(total),AVG(total)
FROM products
GROUP BY product_name,unit_cost,total
And this is what I get:
It returns the exact same amounts. What I need is to add all values in the unit_cost column and return the SUM and AVG of all its values. What am I missing? What did I not understand? Thank you for taking the time to answer!
AVG and SUM as window functions and no grouping will do the job.
select product_name,unit_cost,units,total,
SUM(total) over all_rows as sum_of_all_rows,
AVG(total) over all_rows as avg_of_all_rows
from products
window all_rows as ();
The groups in your query contain just one row if total is a distinct value. This seems to be the case with your example. You can check this with a count aggregate (value = 1).
Removing total and probably unit_cost) from your select and group by clause should help.
Related
I'm trying to create a Measure in Power BI using DAX that achieves the below.
The data set has four columns, Name, Month, Country and Value. I have duplicates so first I need to dedupe across all four columns, then group by Month and sum up the value. And then, I need to average across the Month to arrive at a single value. How would I achieve this in DAX?
I figured it out. Reply by #OscarLar was very close but nested SUMMARIZE causes problems because it cannot aggregate values calculated dynamically within the query itself (https://www.sqlbi.com/articles/nested-grouping-using-groupby-vs-summarize/).
I kept the inner SUMMARIZE from #OscarLar's answer changed the outer SUMMARIZE with a GROUPBY. Here's the code that worked.
AVERAGEX(GROUPBY(SUMMARIZE(Data, Data[Name], Data[Month], Data[Country], Data[Value]), Data[Month], "Month_Value", sumx(CURRENTGROUP(), Data[Value])), [Month_Value])
Not sure I completeley understood the question since you didn't provide example data or some DAX code you've already tried. Please do so next time.
I'm assuming parts of this can not (for reasons) be done using power query so that you have to use DAX. Then I think this will do what you described.
Create a temporary data table called Data_reduced in which duplicate rows have been removed.
Data_reduced =
SUMMARIZE(
'Data';
[Name];
[Month];
[Country];
[Value]
)
Then create the averaging measure like this
AveragePerMonth =
AVERAGEX(
SUMMARIZE(
'Data_reduced';
'Data_reduced'[Month];
"Sum_month"; SUM('Data_reduced'[Value])
);
[Sum_month]
)
Where Data is the name of the table.
I have a spreadsheet that looks like this:
https://docs.google.com/spreadsheets/d/1b29gyEgCDwor_KJ6ACP2rxdvauOzacDI9FL2K-jgg5E/edit?usp=sharing
I have two columns I'm interested in, Date and Count. Every few dates, there will be a "TOTAL" line where all the Counts corresponding to that TOTAL will be summed.
I want an output that looks like the cells to the right, where all the TOTAL counts are summed according to month. The problem lies in that Column A has only the date or TOTAL, in separate rows, and this layout can't be changed, leaving me thinking I need to reference the cell directly above TOTAL in column A, which has the correct month I want to group that TOTAL by.
The reason why I can't just filter column A by date range is because of inconsistent use, where sometimes the count data is only entered in the TOTAL row.
I've scoured the internet exploring FILTER, INDIRECT, QUERY, SUMIFS, etc... but can't find exactly how to do this.
I can easily filter column B where A:A="TOTAL", but what I think I am needing to do after that is use each cell above where A:A="TOTAL" as a range for the month criteria, somehow using what I found here: https://exceljet.net/formula/sum-by-month, expressed by ">="&D3 and "<="&EOMONTH(D3,0).
Any help or alternatives would be appreciated. Thank you.
or a different (offset) approach:
=QUERY(FILTER({EOMONTH(INDIRECT("A1:A"&ROWS(B2:B)), 0), B2:B}, A2:A="total"),
"select Col1,sum(Col2)
group by Col1
label sum(Col2)''
format Col1'mmmm'", 0)
Query formula is great for these kind of situations but looking at it by month will introduce issues if you plan on looking at multi-year data:
=arrayformula(QUERY(QUERY({row(A:A),TEXT(A:A,"MMMM"),B:B},"SELECT max(Col1),Col2,sum(Col3) where Col3 is not null group by Col2 order by max(Col1) label Col2 'Month', sum(Col3) 'Count'"),"SELECT Col2,Col3"))
try:
=ARRAYFORMULA(QUERY({IF((B2:B="")*(A2:A=""),,VLOOKUP(ROW(A2:A),
IF(A2:A<>"total", {ROW(A2:A), DATEVALUE("01/"&MONTH(A2:A)&"/2000")}), 2, 1)),
IF(A2:A= "total", A2:A, ), B2:B},
"select Col1,sum(Col3)
where lower(Col2) = 'total'
group by Col1
label sum(Col3)''
format Col1'mmmm'", 0))
Thanks in advance for any advice you can offer! I'm building a Tableau dashboard to explore housing affordability and school quality in different neighborhoods in my area. A user will select their occupation and see a graph of neighborhoods plotted based on school quality and housing affordability. To explore housing affordability, I'm using county level assessor data with the valuation of every property matched to neighborhoods.
The goal is to display the percentage of homes in an area that are affordable given the median occupational wages for the job a user selected. Right now, I'm trying to use a calculated field with COUNT([Parcels]<[Occupation])/COUNT([Parcels]), but I need to find a way to count the number of properties in each specific neighborhood below the cut off value.
Does anyone know of a way to count elements of a particular group in this way in Tableau?
I'm on a Mac, using Tableau Desktop, and doing the back end analysis work in R. Thank you!
You seem to misunderstand what the function COUNT() does. You are certainly not alone. Count() behaves in Tableau almost identically to how it does with SQL.
Count([some field]) returns the number of data rows where the value for [some field] is not null. It does not not return the number of rows where [some field] evaluates to true, or a positive number, or anything else.
If [some field] always has a non-null value, then Count([some field]) is the same as SUM([Number of Records]). If [some field] is always null, then Count([some field]) is zero. Count() is not like Excel's CountIf function.
If you want to count data rows that meet a condition, you could try COUNT(if [condition] then 1 end) Since the missing ELSE case defaults to null values, that expression will count rows where [condition] is true.
So one way to get the percentage of affordable homes is count(if [affordable] then 1 end) / count(1) assumes each Data row represents a home. Then format your field to display as a percentage. Another option is to learn to use quick table calcs
If you want to display the number of rows in a given visualized table you could also use SIZE()
Source, official docs:
https://help.tableau.com/current/pro/desktop/en-us/functions_functions_tablecalculation.htm#size
How do I do the Average in this coding?
Sum(qa.greeting1+qa.greeting2+qa.greeting3+qa.greeting5+qa.greeting6) as AverageTotalCareScore
Thank you!
It sounds like you have a query already for a result set (100 rows?) so I would suggest doing something like a CTE to find the average of a result set.
WITH CTE AS(
<your query here>
)
SELECT
AVG(column_to_be_averaged)
FROM CTE
Unless I misunderstood something, this should work out.
To calculate the average you can simply do like this:
select (qa.greeting1+qa.greeting2+qa.greeting3+qa.greeting5+qa.greeting6)/5
ie, sum of all the items divided by the number of items.
You can also use the AVG() function in SQL Server like this:
select AVG(column1)
I just started using MySQL Workbench (6.1). The default limit for queries is 1,000 and that's fine I want to keep that.
But the results from the action output message will therefore always say "1000 rows returned".
Is there a setting to see the number of records that would be returned in the query had their been no limit? For sanity checking query results?
I know this is late by a few years, but I think you're asking for a way to see total row count in the bottom of the results pane, like in SQL Server. In SQL Server, you would also go in the messages pane and it would say how many rows were returned. I was actually looking for exactly what you were asking for as well, and seems like there is no way to find that. If you have an ID in your table that is just numeric and is in numeric order, you could order by ID desc and look at the biggest number there. That is what I've decided to do.
The result is not always "1000 rows returned". If there are less records than that you will get the actual count. If you want to know the total number of rows in a table do a select count(*) from table. Alternatively, you can switch off the automatic limit and have all records returned by MySQL Workbench, but that can be time + memory consuming for large tables.
I think removing the row limit will help. By default, MySQL workbench will limit the result set to 1000 rows but you can always disable the limit. Check out https://superuser.com/questions/240291/how-to-remove-1000-row-limit-in-mysql-workbench-queries on how to do that.
You can run a second query to check that
select count(*) from (your original query) as t;
this will return the total rows in actual result.
You can use the SQL count function. It returns the count of the total number of rows a query returns.
A sample query:
select count(*) from tableName where field1 = value1
In workbench, in the dropdown menu at the top, set it to dont limit Then run the query to extract data from table Then under the output pane below, the total count of the query results will be displayed in the message column