Actually i have a select statement which contains a group by I would like this : How to do that (test value fill in first row group) with sql (pgsql) ? thanks ! I tried Partition by… Answer demo:db<>fiddle Enumerate all records of an ordered group to find the first one using the row_number() windo…
Tag: group-by
How to count unique data occuring in multiple categorical columns from a pyspark dataframe
The Problem: In a ML based scenario, I am trying to see the occurrence of data from multiple columns in an Inference file versus the files that were provided to me for Training. I need this to be found only for categorical variables, since numerical attributes are scaled. The Expectation: I’ve got some …
What is the issue in below sql query? [closed]
Closed. This question needs details or clarity. It is not currently accepting answers. Want to improve this question? Add details and clarify the problem by editing this post. Closed 1 year ago. Improve this question I am beginner in sql. Anyone please tell me the problem of my customised query. Error Code: 1…
SQL Query to Find if (Count of date > X) = 0 For Group of ID
I apologize if the title is not be correct as I’m not sure what I need to ask for, since I don’t know how to build the query. I have the following query built to return a list of chemicals and other related fields. I am using this query in a VB.Net application where it exports the results to an
SQL Query — AVG for Occurrence Across Multiple Columns
I have a table like the following ID_A ID_B Avg_Class_Size 1 2 16 3 4 10 2 3 8 2 4 9 Where ID_A and ID_B represent distinct student ID codes, and AVG_Class_Size represents the average class size of the classes shared between students A and B. I would like to calculate the average of the “avg_class_size&…
SQL to get 3 adjacent actions without duplicate from the flags
I have a question that a little bit similar with question#66044663 but more complicated. Here’s my dummy data. I want to get 3 adjacent actions(no duplicate) from the flag by each user. Here’s the …
SQL Server Update Row where date is not the max date when records are grouped by some ID
I have a table where I account records are loaded daily. If an account comes in to the table and it already exists I keep both records in the database but need to update the record with older …
Group query in subquery to get column value as column name
The data i’ve in my database: I ran a query to group by id and status to get the below result: I want to use the above query as subquery to get the result below, where the distinct status are column name. Any other approach to get the final data is also appreciated. Let me know if need more info.
SQL select data grouped by attr1 with different criteria on attr2 and attr3
I have table with data like this in Access: I need result grouped by attr1, count attr2 and count attr3 only if value is “Yes”: I would appreciate any help with sql. Thank you very much in advance. Answer The expression for the third column is the challenge here. Consider an IIf expression: IIf(m.…
union all two table instead of join
I have several table which I can not join them as it gets really complicated and bigquery is not able to process it. So I am trying to union all tables and then group by. I have an issue during this process. I have two tables called t1 and t2 with below headers, they don’t have null values: so in