I have a following Hive table I need to split and get the count values of each item in item_val column Expected output I tired below count but values are not getting delimited properly. Please help! Answer In Hive, one option is to use the lateral view syntax:
Tag: count
Time series group by day and kind
I create a table using the command below: CREATE TABLE IF NOT EXISTS stats ( id INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT, session_kind INTEGER NOT NULL, ts TIMESTAMP NOT NULL DEFAULT …
Syntax for counting greater than and summing a value with multiple joins without the keyword having
I’m learning SQL (Postgres) and I’m slightly confused about something I’m trying to do. I have the following tables. Employee: Project: Department: And works_on: For this, I was trying to do something slightly more complex: To create a view that has project name, department name, number of e…
SQL how can we get monthly trend from 2 separated columns start_date and end_date?
Imagine we have the following data: The question here is to get the 2020 monthly trend of active paid subscriptions. For each subscriber (ID), we can only count the months that they are active. So for S1, we can only count S1 active in Jan 2020 and March 2020, not Feb 2020. During the interview, I wrote a fun…
Mysql query per date and per group
I have an SQL query which counts user uptake (registrations) by day for a particular group of users. It also does a cumulative (running total) This query is using the audit table purely to get me a list of dates reliable even if there are no users created on every day, i know the audit table with have a recor…
SQLite 3.24 – Counting occurrences of value grouped by id without using window functions
Apologies if this has been asked, but maybe I’m not familiar with the language to ask for what I want, and I looked through dozens of other questions but don’t seem to be finding what works. I’m working on a tool for a trading card game, a deck is a list of cards, I have a table mapping deck…
Count number of students above and below the average score in SQL
I have a sample table below and I am trying to get the number of student above the average score and number of students below the average score. The target result table is supposed to look like I have been able to write a query to get the names of students above the average score and this can be easily
In PostgreSQL, how to query for a computed results by the grouping of a field?
In my PostgreSQL database I have an invitations table like so: Invitations Table: Fields Details I’d like to query the Invitations table and group by unique sources. And then per source, include the total # of records and the total of those completed. Completed being where complated_at is NOT NULL. Desi…
oracle sql, id’s, group by one column, mulitple distinct in other column
I am trying to figure out how to write a query to do this. I have two ID’s in the table ID1 and ID2. Below is what I want. Want ID2 has count(ID2)>1 count of distinct ID1 >1 I am not sure how to do this with Oracle SQL. I did write code to do the group by. However, I
MySQL:How to Rewrite a Select element as ‘y’ then using that later in a where statement
So what im trying to do is this but this doesn’t work: Here is another example: Answer You can’t use an aggregate expression (sum(), count(), …) in the where clause of the query. This clause is evaluated before rows are grouped together by the group by clause, so the aggregates are not yet a…