SQL - any and all - Lemmy.world
lemmy.world
For discussion about SQL and databases. All versions welcome. - MSSQL - PostgreSQL - MariaDB - SQLite - etc…

Come share your knowledge, announcements, and questions with the community.

  • Little8Lost@lemmy.world
    2·
    1 year ago

    you can make:
    `SELECT table.name, table2.conditionOrSomething, table3.anotherCondition

    FROM table

    LEFT JOIN table2 ON table.id1=table2.id1 OR NULL

    LEFT JOIN table3 ON table.id1=table3.id1 OR NULL

    GROUP BY table.id1; `
    That way you can get responses like:

    • “asdf”, NULL, NULL
    • “asdf”, true, NULL
    • “asdf”, false, 2

    It is helpful to see if connected data exists or not