42.6.8.1. Obtaining Information About An Error

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Page: https://www.postgresql.org/docs/12/plpgsql-control-structures.html
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42.6.8.1. Obtaining Information About An Error

This example omits raise notice code:

DECLARE
  text_var1 text;
  text_var2 text;
  text_var3 text;
BEGIN
  -- some processing which might cause an exception
  ...
EXCEPTION WHEN OTHERS THEN
  GET STACKED DIAGNOSTICS text_var1 = MESSAGE_TEXT,
                          text_var2 = PG_EXCEPTION_DETAIL,
                          text_var3 = PG_EXCEPTION_HINT;
END;