Multi-column subquery in select part or other way to pre-filter a heavy aggregate
I have 2 tables related in a one-to-many relationship:
Lost at SQL Game: SQL Query to Identify Impostor Marine Species Returns Incorrect Result
I’m working on a SQL problem where I need to identify impostor marine species based on their attributes. The species I’m dealing with are clownfish, octopuses, and starfish. The attributes include species name, length (in meters), weight (in kilograms), and habitat type. I’ve written a query to determine if a species is an impostor based on specific criteria, but one of the 16 rows returned is incorrect.
SQLite DELETE WHERE IN gives a SQL logic error with no further information
Have a situation where the current select works fine,
How do I query for overtaken trains from this train schedule data?
From my train schedule database I want to get trains overtaken by train 12301. What would the SQL query be?
SQLite conditional select from different tables
I have a table with match identifiers and corresponding player/team identifiers expressed as home / away.
Each team, tid, consist of two players and each player has its own identifier, pid.
The problem is that in table matches I don’t know whether the column home / away represents a team or a single player.
Why does my very simple query slow down massively when combining two fast WHERE clauses?
I have a simple table in an SQLite database that is separately indexed on all columns.
How do I make SQLITE query with limits, random and unions more readable?
In SQLITE LIMIT cannot be used in queries which you want to perform union on, so instead of writing something like
How do I optimise queries for combined criteria in a large SQL Database?
I have a ~280GB SQLite DB with company financial info which I am running various queries against. Yes it’s SQLite because it works fine and is simpler to work with. I have a MySQL version of this DB too but I’d rather avoid using it if I can.
Implementing my own word search in SQLite
I have a readonly database of Shows. Each show includes a few paragraphs of text. I want to build a tool in which a user can enter one or more words and retrieve shows that contain all of those words.
Calculating median using cte and groupby SQLite
I want to calculate the median using SQLite. My variable of interest is the result of combining multiple tables together. I tried to follow this solution, but the output shows null-values.