I have a custom permissions system in a django project that can link any user to any specific model instance to grant permission on that object. It is more complex than this, but boiled down: I want to query for all permissions for any user, that are linked to the same content_object(s) that a particular user…
In c# app, how to connect foreign key of subtask table in SQL?
I am trying to create a Task Management System using C# Web API & SQL Server. Here is what I am trying to achieve: Users can send POST requests to create a Task (with optional sub-tasks). Users can send GET requests to retrieve a Task (displaying all sub-tasks in the response if they exist) Here are some …
Check digit constraint in SQLite
I’m trying to create a constraint for an id (5 digits in length) where the 5th digit is the last digit of the value (1 x d1 + 3 x d2 + 1 x d3 + 3 x d4). For instance, if the first four characters of the id are 1234, then the fifth digit is the last digit of
How to append two dataframes when column number differ in PostgreSQL in R
What I try to do is that bind rows in my PostgreSQL databes in matched columns like rbindlist’s (from data.table) fill argument. In short, the table I’d like to see in my database is like this; I tried it in RPostgres in this way; But it doesn’t work and fields an error because the second ta…
How I can integrate two function in the same request
I want to display the most ordered product with its name but I don’t know how to integrate the max and count function in the same request Answer here is how you can do it:
Rewrite a sql query for better optimization [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 11 months ago. Improve this question I have a table that has the following data id orderid 1 0 1 1 1 2 2 0 3 0 3 1 An id
SQL – Select rows with greatest revision that are less than a set revision
I have an audit table where entities are stored by id and an associated revision number and revision type (this is a Hibernate Envers audit table). E.g. id rev revtype foo_description 10 1 0 10 foo v1 10 3 1 10 foo v2 10 4 1 10 foo v3 20 2 0 20 foo v1 20 4 1 20 foo
In sql how do you print only the most occuring
This actually tells us which person made the most purchases. But how can i print only the top row and not have all the other rows below? Answer You want to fetch the highest ranked row(s) of your intermediate result. If you want to keep your query as is and only add the appropriate clause, use FETCH and a mod…
Error: SQL Substring with the “ON” Part of the JOIN
I am using PostgreSQL and must join tables using substring. As I demonstrated below, xyz.MODEL and first three characters of “columnname” from abc Table should match. However, the query below does not work. It returns the error: Can anyone help me to correct this query? Thanks for your help alread…
Add class and onclick function to HTML string from SQL Server
I’ve a query string to create HTML row and the output is Is there any way to add an onclick function and class from SQL itself? Answer It’s unclear where you want the attributes to go, but you could do something like this db<>fiddle