Hi, Eric: is this page useful for you? https://www.sqlitetutorial.net/sqlite-union/ <https://www.sqlitetutorial.net/sqlite-union/> 
SB

> On 29 Oct 2021, at 15:46, Eric Lease Morgan <[log in to unmask]> wrote:
> 
> How do I join multiple tables in an SQLite database in order to output the values in the linked tables?
> 
> 
> I have a database with the following structure:
> 
>  create table bibliographics (
>      identifier  TEXT PRIMARY KEY,
>      title       TEXT
>  );
> 
>  create table keywords (
>      identifier TEXT,
>      keyword    TEXT
>  );
> 
>  create table entities (
>      identifier TEXT,
>      entity     TEXT
>  );
> 
> 
> I want output looking like this:
> 
>  identifier = homer
>  keywords   = love; honor; truth; justice;
>  entities   = jove; troy; helen; son; ship
> 
> 
> Here is my SQL query:
> 
>  SELECT b.identifier,
>         GROUP_CONCAT( e.entity,  '; ' ) AS entities,
>         GROUP_CONCAT( k.keyword, '; ' ) AS keywords
>  FROM bibliographics AS b
>  LEFT JOIN entities  AS e ON e.identifier IS b.identifier
>  LEFT JOIN keywords  AS k ON k.identifier IS e.identifier
>  GROUP BY b.identifier
> 
> 
> Unfortunately, my output is looking much like this:
> 
>  identifier = homer
>  keywords   = love; honor; truth; justice;
>  entities   = jove; troy; helen; son; ship; jove; troy; helen; son; ship; jove; troy; helen; son; ship; jove; troy; helen; son; ship; jove; troy; helen; son; ship; jove; troy; helen; son; ship; 
> 
> 
> What am I doing wrong? 
> 
> 
> --
> Eric Morgan
>