I am trying to achieve a 1:1 mapping between two tables based on their content. Unfortunately, the 1:1 mapping can not be perfect, as not both tables contain the exact same set of data. Anyways, I want to have the best possible match. Let the code talk in an example: My expected output would be something like…
Tag: sqlite
String concatenation in SQLITE with NA values?
Currently working in SQLite and have the following table I would like to create a new column – which is the concatenation of the columns subject_1 and subject_2, however I have values within my subject_2 column – is there a way of concatenating the columns so that I can get the following table Now…
SQLite – TimeStamp to Date
I am trying to convert a timestamp to date in SQLite. But it give me always Null back, I try many solution I find out, but any solution works for me Here is my request : Thats my SQL script, if you want to try: Answer To expand on @forpas comment, SQLite does not have a TIMESTAMP data type, so
Select values from one column which share a value in another column
Here is the problem. The database describes symmetrical and transferable relations between objects (genes from different species). If a gene X from species 1 is in relation to gene Y from species 2, …
CS50 Pset 7 13.sql, I can’t solve it, nested sqlite3 database
DataBase movies.db tables directors (movie_id, person_id) movies (id, title, year) people (id, name, birth) ratings (movie_id, rating, votes) stars (movie_id, person_id) you can download the database. Question I’m new in programming, so I decided, to begin with, CS50 Harvard course here is the problem a…
Maybe simple – Change ID with real name from another table
I hope you can help a lost person in SQL 🙂 Making this SQL query: SELECT c.CompanyName, c.ClientNumber, obo.EndMonth, ob.EndDate, ob.ClosedBy, ob.ClosedOn, obc.IsActive, obc.CheckPointTypeFk,…
SQLite query for retrieve data Order By
(TableMain) Task_Id Task DateTime Repetition Snooze_Time 8 Call esha 2020-3-15 12:29 1 5 9 Meeting 2020-3-15 11:50 1 1 (TableRoutine) …
How to convert an SQL Output to a python list [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 2 years ago. Improve this question So basically I have an SQL database with 5 different columns of data. what I am trying to do…
SQLite select query if inner join query doesn’t exists
I have two tables, one for all the foods which contains food id, default name and other foods values. Another table is for the food name translations which contains food id, language id, translation. What i want to do is join between these tables by the food id to get the translation for food id = 5 for examp…
Android Studio Null object Reference
Creating an question/answer test application that scores you based on how many attempts it took to get it right (i.e on the first attempt 5 points, 2nd attempt 4 points… and so on) the questions are stored in a .DB file in asset folder and after testing the scoring logic I’m now trying to draw fro…