In PostgreSQL 12, the following errors occur when query some pg_ tables as below:
=> \d pg_class
ERROR: column c.relhasoids does not exist
LINE 1: ...riggers, c.relrowsecurity, c.relforcerowsecurity, c.relhasoi...
^
=> select * from pg_class;
ERROR: syntax error at or near "ERROR"
LINE 1: ERROR: column c.relhasoids does not exist
^
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