I am trying to develop an R Shiny app with an SQLite Database. But I am facing this error while getting any data from the database. The error message is: Loading required package: shiny Attaching …
Tag: sqlite
Delete a task stored in SQL database through html form using Python
This is a web app written in Python to add and delete tasks. This is the add_tasks function: @app.route(“/add”, methods=[“GET”, “POST”]) @login_required def add(): …
How can I convert an int (UNIX timestamp) to datetime in SQLite?
I have to create a table in SQL(I am using IntelliJ and Java), and the table must respect the following restrictions. The table will contain the following columns: title – needs to be able to store letters, digits, and special characters news_description – needs to be able to store the text of the…
What happens when one aggregates without the ‘group by’ clause?
I was wondering why this SQL script SELECT category, avg(valuation) FROM startups group by 1; Gives me the same output like this one: SELECT category, valuation FROM startups group by 1; And why is …
SQL: How to select two employeeid within same team and have a team_score greater than 400 ? Mentioned the table schema below
Previous_teams id (integer) name (text) team_score (real) Team_members team_id (integer) employee_id (integer) employee_name (text) birthday (text) popularity (real) Q: How do I select a pair of employee ids that have worked in at least 5 prior teams where the (average)team_score was greater than 400 and coun…
How to deselect duplicate entries in a query?
I’ve got a query like this: and this query returns the result like this: As you can see in the image there is 3 duplicate, unnecessary entries (no, i can’t delete them because of the multiple foreign keys). How can I deselect these duplicate entries from the result query? In the end I want to retu…
How to access a local, pre-populated sqlite database using Kotlin in Android Studio?
For a personal project, I am creating a quiz app written in Kotlin. To store information about a given question (four choices, the question itself, a category, and the correct answer), I have created a database using SQLite that stores said information. However, I am not unsure of a couple of things. One is w…
SQLite – Excluding rows from a query based on certain column values, without using correlated subqueries
I’m working with the classicmodels database, originally for MySQL, but which we’re using with SQLite. Within this database, there are 2 tables of interest, the orderdetails table… … and the products table. I’ve written a query to list all the distinct order numbers, along with th…
SQLite Delete row from Table A when columns are referenced as FOREIGN KEYS in other Tables B, C, etc
So I have several tables, but will show only 2 as an example: Table G gNo | gName | gAddress G1 | Jean | Bonalbo G2 | Oscar | Berlin G3 | Edd | Brisbane G4 | Bob | California Table B gNo | …
SQL – Update table column values using expression based on two tables
Using a Sqlite database, I have a users table and a ranks table with the following columns: users table: id | rankid | xp ranks table id | name | xpLowerLevel My goal is update the rankId field for all user rows based on the xpLowerLevel field from the ranks table. My Sql expression as follows: Which gives me…