query information_schema with existing schema name returns columns non-exist error

Hi, I got the following error while running the query trino_cursor.execute('''SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" =uip_chenhao_db''') ERROR: `--------------------------------------------------------------------------- TrinoUserError Traceback (most recent call last) /tmp/ipykernel_45823/3428439138.py in <module> 1 trino_cursor.execute(‘’‘SELECT “table_name” FROM “information_schema”.“tables” WHERE “table_schema” =uip_chenhao_db AND “table_name” =chenhao_test_pandastotrino’‘’) ----> 2 data = trino_cursor.fetchall()

/opt/python3common/lib/python3.7/site-packages/trino/dbapi.py in fetchall(self) 455 456 def fetchall(self) -> List[List[Any]]: –> 457 return list(self.genall()) 458 459 def cancel(self):

/opt/python3common/lib/python3.7/site-packages/trino/client.py in iter(self) 441 # Subsequent fetches from GET requests until next_uri is empty. 442 while not self._query.finished: –> 443 rows = self._query.fetch() 444 for row in rows: 445 self._rownumber += 1

/opt/python3common/lib/python3.7/site-packages/trino/client.py in fetch(self) 518 “”“Continue fetching data for the current query_id”“” 519 response = self._request.get(self._request.next_uri) –> 520 status = self._request.process(response) 521 if status.columns: 522 self._columns = status.columns

/opt/python3common/lib/python3.7/site-packages/trino/client.py in process(self, http_response) 388 logger.debug(“HTTP %s: %s”, http_response.status_code, response) 389 if “error” in response: –> 390 raise self._process_error(response[“error”], response.get(“id”)) 391 392 if constants.HEADER_CLEAR_SESSION in http_response.headers:

TrinoUserError: TrinoUserError(type=USER_ERROR, name=COLUMN_NOT_FOUND, message=“line 1:78: Column ‘uip_chenhao_db’ cannot be resolved”, query_id=20211213_230106_00075_bhywy)`

And I can verify the corresponding schema entry exist in the table_schema column: trino_cursor.execute('''SELECT * FROM "information_schema"."tables"''') column_names = [desc[0] for desc in trino_cursor.description] df = pd.DataFrame(trino_cursor.fetchall(), columns=column_names) 'uip_chenhao_db' in df.table_schema.values

[hashhar]

Sorry for my mistake. The literal value should be single quoted, not double quoted.

-trino_cursor.execute('''SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" =uip_chenhao_db''') 
+trino_cursor.execute('''SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = 'uip_chenhao_db' ''') 

[therealJacobWu]

Sorry for my mistake. The literal value should be single quoted, not double quoted.

-trino_cursor.execute('''SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" =uip_chenhao_db''') 
+trino_cursor.execute('''SELECT "table_name" FROM "information_schema"."tables" WHERE "table_schema" = 'uip_chenhao_db' ''') 

Thanks, this does solve the issue.