The following documentation comment has been logged on the website:
Page: https://www.postgresql.org/docs/18/sql-alterschema.html
Description:
The ALTER SCHEMA page has no Notes section, and renaming a schema has one
consequence that is easy to miss.
Objects that store parsed references follow the rename: views, functions
with SQL-standard bodies (BEGIN ATOMIC), and privileges, including ALTER
DEFAULT PRIVILEGES entries. Function bodies written as string constants (AS
$$ ... $$, and every non-SQL language) are stored as text, so a
schema-qualified reference inside them keeps the old name and fails at the
next call. On 14.10, after ALTER SCHEMA old RENAME TO newsch, a LANGUAGE sql
function containing SELECT count(*) FROM old.t fails with ERROR: relation
"old.t" does not exist, while the BEGIN ATOMIC version returns the right
count.
Suggested note:
"Renaming a schema does not update references to it inside function and
procedure bodies written as string constants, since those are parsed only at
execution time (see CREATE FUNCTION). Views and SQL-standard function bodies
are updated automatically."
