Having not a SQLite background, I’m struggling building a "simple" SQLite query. Considering the simplified schema below: ** Table: EVENTS ** id content 1 abc 2 xyz ** Table: TIMESLOTS ** id start end 1 05-2022 06-2022 1 10-2022 12-2022 2 ……. ……. I’d like to build object like this on: { id: 1, content:… Read More How to build a nested object from 2 SQLite tables?
I’m trying to join two tables in SQL Server as below: (these are sample tables and the actual one has thousands of records) Sales table ID SALESID ITEM Details… 1 S1 Item1 2 S1 Item2 3 S1 Item3 4 S2 Item 4 5 S3 Item 5 6 S3 Item 6 Invoice table INVSALESID Invoice amount… Read More Adding data from the second table to the first matching record in first table and setting the rest to zero
I am writing an app for home use and decided to use SQLite as the database to learn some SQL. The app works as follows: there is a set of people who have a name → this information comes from place A and is reflected in the people table. I have from an unrelated source… Read More How to chain JOINs to query a distant table?
I was trying to convert the below tags column to normal string without the brackets and commas and tried the below two ways but I’m getting error. can someone tell a correct way Error: can only join an iterable >Solution : If there are missing values and lists filled by strings, you can use Series.str.join:… Read More convert list to string using join
I have two tables "info" and "sell_info", "info" table contains "list of record" and "sell_info" contains "product which are on sale",so i want to get "lowest" value of record where id="1",How can i do this ? Here is my table "info" id name 1 ABC 2 XYZ 3 CDE … Here is my table "sell_info"… Read More Unable to get lowest value using join
I have the following two tables TeamsTable TeamID TeamName 1 Name1 2 Name2 3 Name3 … … and GameScoresTable GameID HomeTeam(FK) AwayTeam(FK) HomeTeamScore AwayTeamScore 1 1 2 50 70 2 1 3 70 80 3 2 1 70 80 1 2 3 50 60 2 3 1 70 80 3 3 2 40 90 …… Read More Is there a way to filter and arrange data in SQL for a particular entry?
I have the following two tables TeamsTable TeamID TeamName 1 Name1 2 Name2 3 Name3 … … and GameScoresTable GameID HomeTeam(FK) AwayTeam(FK) HomeTeamScore AwayTeamScore 1 1 2 50 60 2 2 3 70 80 3 3 4 70 80 … … … … … I want to get a table like this: FinalTable GameID HomeTeam… Read More How to join AND sum values of two columns?
This code doesnt do what I want: joins( ‘LEFT OUTER JOIN cats ON owners.id = cats.owner_id AND "cats"."hungry" IS FALSE’ ).where( ‘cats.hungry IS FALSE OR cats.hungry IS NULL’ ) There are 3 owner records: A, B & C There are two cat records: Cat-A (hungry), Cat-B (not-hungry) I want to segment my owners into 2… Read More Parametrized left join in Rails 7 – select records that are null or true
I have a MySQL query which should count the amount of replies to your comments with relations to other columns. I try to "relate" two columns together but can’t figure out how to create a correct query. The table somewhat looks like this: author_id content comment_id replied_to 12 nice post! 1 0 7 isn’t it?… Read More Relate two columns in the same table
This seems like a fairly simple SQL statement, but I’m just not seeing it. I have: a table called Groups. columns are Id, Name, Address, and a bunch of other columns we don’t care about. a table called People. columns are Id, GroupId, Name, Priority, and a bunch of other columns we don’t care about.… Read More How to join table with maximum value in column?