This is a life example of the question so you can understand better what we need. EXAMPLE We have 3 tables For each car item we want to keep these data: And 3 ‘spec’ values located in ‘specs’ table, based on ‘car_spec’ table: We want to combine all the required data into one table like this. Sample data cars table
Tag: aggregate-functions
SQL query for report by name with many columns count by status
Is it possible by sql query to produce a report group by a name with count by status. Tables: Project (id, name, status_id, service_id) Status (id, name) Service (id, name) I need to make a report, count by status group by service: Columns results: Service name, status name 1 , status name 2, status name 3, total Rows results: Answer
Getting sum of two rows in an inner joined table
I have these two tables; trips id date revenue 1 01/01/2020 5000 2 01/01/2020 3000 3 02/01/2020 4000 4 02/01/2020 2000 expenses id tripid amount 1 1 500 2 1 300 3 2 400 4 2 200 5 2 700 I would like to get the sum of revenue collected in a day AND sum of expenses in a day.
Postres SQL select with GROUP BY and COUNT
i have this SQL select SELECT t.debtor_account, COUNT(t.debtor_account) FROM transaction t GROUP BY t.debtor_account HAVING COUNT(t.debtor_account) > 2; which work, but i need select all from …
Using Over() with aggregate functions while calculating percentage
I am writing a query to print Total Students in each department in a college, I also want to print the percentage of those students in each department out of Total students in the college. Having issues with calculating percentage, the above query throwing an error dbo.Student.Id is invalid in the select list because it is not contained in either
Multiple columns from one column
I track the aging of customer invoices. The below code example returns the balance of customer invoices by customer that are between 0 and 30 days old. However, I want to run one query that pulls separate columns into Excel for each customer’s balance aged between 0 and 30 days, 31 and 60, 61 and 90, and finally over 90
How to hide rows where aggregate functions are used
let’s imagine here is my report: select 1 from dual union all select 2 from dual union all select 3 from dual union all select 4 from dual Output: 1 2 3 4 If e.g. i want to hide part of the report …
using subquery’s column alias as a property in main query
i want to know if the main query can see the alias, here’s an example: Does the first query see the alias “values”? Answer Does the first query see the alias “values”? Yes, it does. The subquery creates a derived table, and aliases act as column names in that context. However, standard SQL requires that you give an alias to
What kind of join should I implement in order to receive the output I am trying to get?
NOTE: Just a practice problem.. NOT looking for free homework answers. The practice problem I have asks to report the number of flights by plane’s year in ascending order of plane’s year. This requires the joining of two tables, the flights table and planes table. I believe the SQL should be relatively simple, and I think the main issue with
AVG in SQL Server
I am learning SQL Server, and I have a sample database which I got from my co-worker. I created a stored procedure previously which works fine. Now I am trying to show average of the column which I am struggling at the moment. Your supports means a lot and I will learn from this. So here is my query: And