Question

I have a problem with my sql query in mysql. in sqlite3 and sql server all works.

SELECT        `buildings`.*
FROM          `buildings`
  INNER JOIN  "floors"
  ON          "floors"."building_id" = "buildings"."id"
  INNER JOIN  "spaces"
  ON          "spaces".floor_id = "floors".id

maybe i need to process on other way in mysql?

thanks

Answer 1

MySQL treat words in quotes ("floors") as strings, so those values are NOT used as table/field names. Try

SELECT ...
...
INNER JOIN floors ON floors.building_id = buildings.id
INNER JOIN spaces ON spaces.floor_id = floors.id

instead. Backticks around table/field names are required ONLY when the table/field name is a reserved word. buildings is not a reserved word, so no backticks are necessary.