Recent questions tagged aggregate

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aggregate - LINQ implementation of Cartesian Product with pruning

I hope someone is able to help me with what is, at least to me, quite a tricky algorithm. The Problem I ... not posting this sooner...see below See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - NHibernate - QueryOver criteria appearing in Where instead in Having clause, error

I have a problem in QueryOver where using Group by and have some criteria in where clause. Want to move ... , V.VENDORTYPE, V.VENDORNAME See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - How to use R for same field aggregation by multiple separate group

I'm trying to perform count of an indicator on several (actually hundreds) groups separately (NOT on all ... Thanks in advance, Michael. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - Elasticsearch: Possible to process aggregation results?

I calculate the duration of my service-processes using the SUM-Aggregation. Each step of the executed process will be ... Min: 1033 AVG: 1116 See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - Group/bin/bucket data in R and get count per bucket and sum of values per bucket

I wish to bucket/group/bin data : C1 C2 C3 49488.01172 0.0512 54000 268221.1563 0.0128 34399 34775.96094 0. ... sum and count of C1 per bucket See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - MySQL: What happens to non-aggregated fields upon a GROUP BY?

I have very a basic question about the following behavior in MySQL. Suppose we do the following GROUP BY: SELECT a, ... out of all values for a? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - Weird behaviour of SUM and CONCAT in MySql

If I want to make a sum of a specific numeric column in MySQL, I do SELECT SUM(MyColumn) FROM MyTable WHERE ... work: getting SQL syntax error. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - Prolog count the number of times a predicate is true

I want to count the number of times a custom predicate is true. For example, I have the following code: is_man(john). ... = 2 How can I do that? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - frequency table with several variables in R

I am trying to replicate a table often used in official statistics but no success so far. Given a dataframe ... in Excel . Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - frequency table with several variables in R

I am trying to replicate a table often used in official statistics but no success so far. Given a dataframe ... in Excel . Thanks in advance See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - aggregating time series in R

I have the following OHLC data (by 3-minute intervals) library(tseries) library(xts) library(quantmod) > str(tickmin) ... I can fix the error. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - CQRS sagas - did I understand them right?

I'm trying to understand sagas, and meanwhile I have a specific way of thinking of them - but I am not sure ... ) is used. Is this right? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate - Elasticsearch - generic facets structure - calculating aggregations combined with filters

In a new project of ours, we were inspired by this article http://project-a.github.io/on-site-search-design- ... a hint at something to try. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - How to average/sum data in a day in SQL Server 2005

I'm trying to average data in SQL Server 2005 in a day. Here is what my database look like this if I use ... /2011 1234 (average value/or sum) See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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396 views

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aggregate - Subtracting values group-wise by the average of each group in R

I am trying to subtract group means from each group's values. For example: > x <- data.frame('gene' = c('A','A ... How can I do it in R? Thanks. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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366 views

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aggregate - R: How to get the last element from each group?

I have a data frame containing a time series with two time stamp columns, d$day and d$time, and say, for ... Any easier way to do this? See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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376 views

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aggregate functions - Precedence of a mysql session variable value in an sql statement

What is the standard behaviour of a session variable when used in an SQL statement. Case 1: In the following ... SQL-Query-Order-of-Operations. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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673 views

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aggregate functions - MYSQL CONCAT MAX LENGTH

Following this post: POST ABOUT CONCAT My problem is that i have many rows CONCAT into one row. For example if i ... problem is, how to do that. See Question&Answers more detail:os...

asked Oct 24, 2021 in Technique[技术] by 深蓝 (71.8m points)

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aggregate functions - replace NULL values with latest non-NULL value in resultset series (SQL Server 2008 R2)

for SQL Server 2008 R2 I have a resultset that looks like this (note [price] is numeric, NULL below ... /server.112/e10592/functions083.htm See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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520 views

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aggregate - Get the means of sub groups of means in R

I'm a newbie of R and I don't know how to get R calculate the means of a subgroups of means which are ... without doing it one group by one? See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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547 views

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aggregate functions - use mysql SUM() in a WHERE clause

suppose I have this table id | cash 1 200 2 301 3 101 4 700 and I want to return the first row in which ... WHERE SUM(cash) > 500 doesn't work See Question&Answers more detail:os...

asked Oct 17, 2021 in Technique[技术] by 深蓝 (71.8m points)

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