I have a report with two tables. The first table is a list of clients, detailing each client that falls into one category of three with different items for each client. The SQL joins up a client_table with the client_items table (there can be multiple items per client) the SQL results looks like so:
Type ClientID ItemID
A 1 1
A 3 1
A 3 2
B 2 1
B 4 3
C 5 2
My second table is going to return counts of the distinct ClientIDs from various combinations of the types:
Total (A+B+C) - I've got this one figured out with =CountDistinct(Fields!ClientID.Value,"datasource1")
Type B+C - Distinct ClientIDs where the type is B or C
Type C - Distinct ClientIDs where the type is C
I hope that was clear, if not let me know what I need to add to clear it up.
CountDistinct() counts non-null values, so you could use an expression to null out those values you don't want to count and do something similar to your first value.
Type B+C:
=CountDistinct
(
IIf
(
Fields!Type.Value = "B" or Fields!Type.Value = "C"
, Fields!ClientId.Value
, Nothing
)
, "datasource1"
)
Type C:
=CountDistinct
(
IIf
(
Fields!Type.Value = "C"
, Fields!ClientId.Value
, Nothing
)
, "datasource1"
)
=Sum(CountDistinct(Fields!UserName.Value,"IssueDate7"))
Here Username is the row group and Issuedate7 is the column group
Regards
Mercy S
Related
As we all known, the window function "last_value" returns the last value within an ordered group of values.
In the following example, group by field "A" and sort by field "B" in positive order.
In the group of "A = 1", the last value is returned, which is, the C value 4 when B = 2.
However, in the group of "A = 2", the values of field "B" are the same.
At this time, instead of the last value, which is, the C value 4 in line 6, the first C value 1 in B = 2 is returned.
This puzzles me why the last value within an ordered group of values is not returned when I encounter the value I want to use for sorting.
Example
row_number
A
B
C
LAST_VALUE(C) IGNORE NULLS OVER (PARTITION BY A ORDER BY B ASC)
1
1
1
2
4
2
1
1
1
4
3
1
1
3
4
4
1
2
4
4
5
2
2
1
1
6
2
2
4
1
This puzzles me why the last value within an ordered group of values is not returned when I encounter the value I want to use for sorting.
For partition A equals 2 and column B, there is a tie:
The sort is NOT stable. To achieve stable sort a column or a combination of columns in ORDER BY clause must be unique.
To ilustrate it:
SELECT C
FROM tab
WHERE A = 2
ORDER BY B
LIMIT 1;
It could return either 1 or 4.
If you sort by B within A then any duplicate rows (same A and B values) could appear in any order and therefore last_value could give any of the possible available values.
If you want a specific row, based on some logic, then you would need to sort by all columns within the group to reflect that logic. So in your case you would need to sort by B and C
Good day Bill!
Right, the sorting is not stable and it will return different output each time.
To get stable results, we can run something like below
select
column1,
column2,
column3,
last_value(column3) over (partition by column1 order by
column2,column3) as column2_last
from values
(1,1,2), (1,1,1), (1,1,3),
(1,2,4), (2,2,1), (2,2,4)
order by column1;
I am trying to count rows in a table based on multiple criteria in different columns of that table. The criteria are not directly in the formula though; they are arrays which I would like to refer to (and not list them in the formula directly).
Range table example:
Group Status
a 1
b 4
b 6
c 4
a 6
d 5
d 4
a 2
b 2
d 3
b 2
c 1
c 2
c 1
a 4
b 3
Criteria/arrays example:
group
a
b
status
1
2
3
I am able to do this if i only have one array search through a range (1 column) in that table:
{=SUM(COUNTIFS(data[Group],group[group]))}
Returns "9" as expected (=sum of rows in the group column of the data table which match any values in group[group])
But if I add a second different range and a different array I get an incorrect result:
{=SUM(COUNTIFS(data[Group],group[group], data[Status],status[status]))}
Returns "3" but should return "5" (=sum of rows which have 1, 2 or 3 in the status column and a or b in the group column)
I searched and googled for various ideas related to using sumproduct or defining arrays within the formula instead of classifying the whole formula as an array but I was not able to get expected results via those means.
Thank you for your help.
Because your group and status criteria are a different number of values (2 values for group, but 3 values for status), I'm not sure you can do this in a single formula. Best way I know of to do this would be to use a helper column (which can be hidden if preferred).
Put this array formula in a helper column and copy down the length of your data (array formulas must be confirmed with Ctrl+Shift+Enter):
=AND(OR(data[#Group]=group[group]),OR(data[#Status]=status[status]))
And then get the count with: =COUNTIF(helpercolumn,TRUE)
You could use a slightly different approach, using Power Query / Power Pivot.
Name your tables Data, Group and Status, then create the following query, named Filtered Data:
let
tbData = Excel.CurrentWorkbook(){[Name="Data"]}[Content],
tbGroup = Excel.CurrentWorkbook(){[Name="Group"]}[Content],
tbStatus = Excel.CurrentWorkbook(){[Name="Status"]}[Content],
#"Merged Group" = Table.NestedJoin(tbData,{"Group"},tbGroup,{"Group"},"tbGroup",JoinKind.Inner),
#"Merged Status" = Table.NestedJoin(#"Merged Group",{"Status"},tbStatus,{"Status"},"Merged Status",JoinKind.Inner),
#"Removed Columns" = Table.RemoveColumns(#"Merged Status",{"tbGroup", "Merged Status"}),
#"Changed Type" = Table.TransformColumnTypes(#"Removed Columns",{{"Status", type number}})
in
#"Changed Type"
Load To as connection only, and tick Load to Data Model
Now create a DAX measure:
Status Sum:=SUM ( 'Filtered Data'[Status] )
You can then use the following formula on your worksheet, to get the Sum of Status values, for rows matching the criteria specified in the Group and Status tables:
=CUBEVALUE("ThisWorkbookDataModel","[Measures].[Status Sum]")
Simply refresh the data connection to update the value.
Datatype:
id: int4
keywords: text
objectivable_id: int4
Postgres version: PostgreSQL 9.5.3
Business_objectives table:
id keywords objectivable_id
1 keyword1a,keyword1b,keyword1c 6
2 keyword2a 6
3 testing 5
Currently the query I'm using is :
select array(select b.keywords from business_objectives b where b.objectivable_id = 6)
It selects the keywords of matched objectivable_id as:
{"keyword1a,keyword1b,keyword1c","keyword2a"}
Over here I wanted the result to be :
{"keyword1a","keyword1b","keyword1c","keyword2a"}
I tried using "string_agg(text, delimiter)", but it just combines all the keywords into one single pocket of an array.
You can simply (and cheaply!) use:
SELECT string_to_array(string_agg(keywords, ','), ',')
FROM business_objectives
WHERE objectivable_id = 6;
Concatenate your comma separate lists with string_agg(), and then convert the complete text to an array with string_to_array().
So something like this can give you expected result:
SELECT array_agg( j.keys )
FROM business_objectives b,
LATERAL ( SELECT k
FROM unnest ( string_to_array( b.keywords, ',' ) ) u( k )
) j( keys )
WHERE b.objectivable_id = 6;
array_agg
-------------------------------------------
{keyword1a,keyword1b,keyword1c,keyword2a}
(1 row)
With the LATERAL part, we look at the outer query to create a new view. Simply it does split of your keywords as set of rows which you can then feed into array_agg() function.
See more about LATERAL: https://www.postgresql.org/docs/9.6/static/queries-table-expressions.html#QUERIES-LATERAL
I need to make a comparison for ratings in two points in time and indicate if the change was upwards,downwards or stayed the same.
For example:
This would be a table with four columns:
ID T0 T0+1 Status
1 AAA AA Lower
2 BB A Higher
3 C C Same
However, this does not work when applying regular string comparison, because in SQL
A<B
B<BBB
I need
A>B
B<BBB
So my order(highest to lowest): AAA,AA,A,BBB,BB,B
SQL order(highest to lowest): BBB,BB,B,AAA,AA,A
Now I have 2 options in mind, but I wonder if someone know a better one:
1) Use CASE WHEN statements for all the possibilities of ratings going up and down ( I have more values than indictaed above)
CASE WHEN T0=T0+1 then 'Same'
WHEN T0='AAA' and To+1<>'AAA' then 'Lower'
....adress all other options for rating going down
ELSE 'Higher'
However, this generates a very large number of CASE WHEN statements.
2) My other option requires generating 2 tables. In table 1 I use case when statements to assign values/rank to the ratings.
For example:
CASE WHEN T0='AAA' then 6
CASE WHEN T0='AA' then 5
CASE WHEN T0='A' then 4
CASE WHEN T0='BBB' then 3
CASE WHEN T0='BB' then 2
CASE WHEN T0='B' then 1
The same for T0+1.
Then in table 2 I use a regular compariosn between column T0 and Column T0+1 on the numeric values.
However, I am looking for a solution where I can do it in one table (with as little lines as possible), and optimally never really show the ranking column.
I think a nested statement would be the best option, but it did now work for me.
Anybody has suggestions?
I use SQL Server 2008.
If you are using Credit Rating, this is very likely that this is not just about AAA > AA or BBB > BB.
Whether you are using one agency or another, it could also be AA+ or Aa1 for long term, F1+ for short term or something else in different contexts or with other agencies.
It is also often requiered to convert data from one agency to other agencies Rating.
Therefore it is better to use a mapping table such as:
Id | Rating
0 | AAA
1 | AA+
2 | AA
3 | AA-
4 | A+
5 | A
6 | A-
7 | BBB+
Using this table, you only have to join the rating in your data table with the rating in the mapping table:
SELECT d.Rating_T0, d.Rating_T1
CASE WHEN d.Rating_T0 = d.Rating_T1 THEN '='
WHEN m0.id < m1.id THEN '<'
WHEN m0.id > m1.id THEN '>'
END
FROM yourData d
INNER JOIN RatingMapping m0
ON m0.Rating= d.Rating_T0
INNER JOIN RatingMapping m1
ON m1.Rating= d.Rating_T1
If you only store the Rating id in you data table, you will not only save space (1 byte for tinyint versus up to 4 chars) but will also be able to compare without the JOIN to the mapping table.
SELECT d.Rating_Id0, d.Rating_Id1
CASE WHEN d.Rating_Id0 = d.Rating_Id1 THEN '='
WHEN d.Rating_Id0 < d.Rating_Id1 THEN '<'
WHEN d.Rating_Id0 > d.Rating_Id1 THEN '>'
END
FROM yourData d
The JOIN would only be requiered when you want to display the actual Rating value such as AAA for Rating_ID = 0.
You could also add an agency_Id to the Mapping table. This way, you can easily choose which Notation agency you want to display and easily convert between Agency 1 and Agency 2 or Agency 3 (ie. Id 1 => S&P and Id 2 => Fitch, Id 3 => ...)
I am working with vba in excel and a database in access. The access database is a table that contains 3 columns; OrderIDs which is a column of numbers saying what order the particular item was in, OrderDescription which is a column that contains the description of the item, and Item # which is a column that gives a number to each particular item (if the item is the same as another, they both are the same item).
I need to build a 2-dimensional array in excel using VBA holding which items were purchased in which orders. The rows will be the Order ID and the columns will be the Item ID. The elements of this array will contain an indicator (like True or a “1”) that indicates that this order contains certain items. For example, row 6 (representing order ID 6) will have “True” in columns 1, 5, and 26 if that order purchased item IDs 1, 5, and 26. All other columns for that order will be blank.
In order to do this, i think I will have to determine the max order number (39) and the max item number(33). This information is available in the database which I can connect to using a .connection and .recordset. Some order numbers and some item numbers may not appear.
Note also that this will likely be a sparse array (not many entries) as most orders contain only a few items. We do not care how many of an item a customer purchased, only that the item was purchased on this order.
MY QUESTION is how can I set up this array? I tried a loop that would assign the values of the order numbers to an array and the items numbers to an array and then dimensioning the array to those sizes, but it wont work.
is there a way to make an element of an array return a value of True if it exists?
Thanks for your help
It seems to me that the best bet may be a cross tab query run on an access connection. You can create your array with the ADO method GetRows : http://www.w3schools.com/ado/met_rs_getrows.asp.
TRANSFORM Nz([Item #],0)>0 AS Val
SELECT OrderNo
FROM Table
GROUP BY OrderNo
PIVOT [Item #]
With a Counter table containing integers from 1 to maximum number of items in a column (field) Num.
TRANSFORM First(q.Val) AS FirstOfVal
SELECT q.OrderNo
FROM (SELECT t.OrderNo, c.Num, Nz([Item #],0)>0 AS Val
FROM TableX t RIGHT JOIN [Counter] c ON t.[Item #] = c.Num
WHERE c.Num<12) q
GROUP BY q.OrderNo
PIVOT q.Num
Output:
OrderNo 1 2 3 4 5 6 7 8 9 10 11
0 0 0 0 0 0
1 -1 -1 -1 -1
2 -1 -1 -1 -1