為什么psycopg2“ DELETE”會導致編程錯誤？

Question

按照SQL String組成的文檔，我想在我的postgresql數據庫中執行DELETE語句：

db_cursor.execute(sql.SQL("DELETE FROM {}".format(sql.Identifier(table_name))))

這導致錯誤：

File "try_pandas.py", line 189, in _store_in_table
db_cursor.execute(sql.SQL("DELETE FROM {}".format(sql.Identifier(table_name))))
psycopg2.ProgrammingError: syntax error at or near "("
LINE 1: DELETE FROM Identifier('fixture_identification')

另一個類似的execute可以正常工作：

db_cursor.copy_expert(sql.SQL("COPY {} FROM STDIN WITH CSV HEADER").format(sql.Identifier(table_name)), table_file)

我真的看不出區別...

Answer 1

區別在這里：

sql.SQL("DELETE FROM {}".format())

它應該是

sql.SQL("DELETE FROM {}").format() # Notice the brackets.