Questions tagged [aggregate-functions]
Aggregate functions are a subset of SQL functions that compute a single value from multiple input rows, mostly used in `SELECT` queries with a `GROUP BY` clause. Practically all modern RDBMS feature aggregate functions. Typical examples include `COUNT()`, `SUM()`, `MIN()`, `MAX()`, and `AVG()`.
aggregate-functions
5,859
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OTBI Data Model Dataset Join [closed]
I am newly introduced to OTBI due to work (about 2 months ago). I have some SQL knowledge, but I am at a loss on how to join to datasets I have.
I want to list my budget and expenses (see screenshot) ...
- 9
0
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0
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38
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How to make aggregate function value a permanent column value?
I have the following query which gives the current_rating value which I am after. However I am wondering how I then make this query update my table permanently so the current_rating value column ...
- 103
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3
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74
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Update a database table, to remove duplicates, with data from another table
Consider the following two tables. Val1, Val2, and Val3 are combined to make a unique code. These are then tied to "Items" from another table (not depicted here, but only referenced by ...
0
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1
answer
26
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$filter is not allowed or the syntax is incorrect
I have some customers details. The schema is as below:
const CustSchema=new Schema({
cust_name:{
type:String,
required:true
},
email:{
type:String,
...
- 75
0
votes
2
answers
46
views
How to use Enumerable.Aggregate without getting CS0411 error
There are two DTO records:
public record struct DateHour(int Hour, double? Value);
private record struct HourSnapshot(uint TotalSeconds, double? Value);
I have another method which works with enum. I ...
- 165
1
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0
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31
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Creating a custom aggregator in spark with window rowsBetween?
What I'm trying to do is use a window function to get the last and current row and do some computation on a couple of the columns with a custom aggregator. I have time series data with points that are ...
- 91
0
votes
1
answer
19
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Getting same aggregation value for all category
I have three table named Content, Reaction and ReactionTypes, the Content and ReactionTypes tables are connected to Reaction table using One to Many relationship. Now, Category and Score are the the ...
- 21
1
vote
1
answer
57
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How to order by SUM() DESC when using WITH ROLLUP?
I want to use SELECT WITH ROLLUP in MariaDB to get a summary row in the result set, but also order the remaining rows by SUM() DESC. How to best achieve this?
Using the example from the linked ...
- 148k
0
votes
3
answers
60
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Mapping result of aggregate function with class in OOP
I have a scenario where I'm designing a class Student.
public class Student
{
int id;
string name;
string section;
int semester;
}
I have a scenario that I want to display the count ...
2
votes
1
answer
66
views
Discount accumulated negative sum from column
I have the following dataset in PostgreSQL 15:
Generate data
SELECT id, value, expected_output, comment
FROM (VALUES
(1, 0.89, 0.89, ''),
(2, 0.17, 0.17, ''),
(3, -0.30, 0, 'accum ...
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1
vote
2
answers
46
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Aggregate multiple values in of javascript
I want to reduce an array of objects like this:
var data = [{
item: "Item 1",
pages: 30,
chapters: 3
},
{
item: "Item 1",
pages: 50,
chapters: 3
...
- 539
0
votes
1
answer
49
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How to return NaN if all values are NaN using the agg() function specifying aggregation output columns
I have a dataframe like so:
data = {'Integers': [1, 2, np.nan, 4, 5],
'AllNaN': [np.nan, np.nan, np.nan, np.nan, np.nan]}
df = pd.DataFrame(data)
I want to return NaN when performing the sum ...
- 1,186
0
votes
0
answers
46
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Writing query in SQL
I am trying to group a set of data in Google BigQuery and I wrote this query. It keeps bringing out error message. Please, can someone help correct the query or guide me on how to write it correctly. ...
1
vote
4
answers
75
views
How to filter for IDs where another column value is the same for all rows?
I have the following table in PostgreSQL:
id fid val
--------------------------
200 995 XXLL
200 996 XXLL
201 995 OOOP
201 996 OOOS
...
- 131
1
vote
1
answer
58
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Making totals from two queries?
I am trying to calculate the space in a warehouse bin location.
I have the following data:
Table 1
Bin Location Item Quantity Total Spots Used
000-A-006 ABC1 100 2
...
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