$ python

 Python 3.6.8 (default,Oct  7 2019,12:59:55)
 [GCC 8.3.0] on linux
 >>> import psycopg2
 >>> db = psycopg2.connect("dbname= .....")
 >>> cur = db.cursor()
 >>> cur.execute("DROP TABLE IF EXISTS blahblah")
 Traceback (most recent call last):

   File "<stdin>",line 1,in <module>
 psycopg2.errors.SyntaxError: syntax error at or near "blahblah"
 LINE 1: DROP TABLE IF EXISTS blahblah
                              ^

所有其他SQL-Expr执行（SELECT等）均定期响应。它让我发疯：（（请问有人吗？二手的Postgres托管在Heroku。Thnx。