Q005warning

Unknown function

A function call has no matching overload for its arguments.

db/queries/example.sql:2:12: warning[Q005]: unknown function "lenth"

   |
 2 | SELECT id, lenth(title) AS letters FROM books;
   |            ^^^^^

Printed by sgl from a small PostgreSQL reproduction project.

When it is reported

The function is neither one of the dialect's built-in functions nor created by a migration, or no overload accepts this many arguments.

Check the name and argument count. Register functions your database provides outside the migrations as custom functions in sgl.yaml.

$ sgl explain Q005

Look for UnknownFunction in Seagull's source to see where it is reported.