lidavidm commented on issue #1755:
URL: https://github.com/apache/arrow-adbc/issues/1755#issuecomment-4139326307

   The driver runs this query on startup:
   
   ```sql
   SELECT
       attrelid,
       attname,
       atttypid
   FROM
       pg_catalog.pg_attribute
   ORDER BY
       attrelid, attnum
   ```
   
   Then it runs this a few times to try to pick up recursive structures:
   
   ```sql
   SELECT oid, typname, typreceive, typbasetype, typrelid, typarray 
   FROM pg_catalog.pg_type
   WHERE (typreceive != 0 OR typsend != 0) AND typtype != 'r' AND 
typreceive::TEXT != 'array_recv'
   ```


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