DESCRIBE FUNCTIONS Output the names of all user-defined-functions in the current keyspace,
https://cloud.google.com/bigquery/user-defined-functions 为了识别形容词,我们查找NL API返回的所有标记,其中ADJ作为它们的partOfSpeech
https://cloud.google.com/bigquery/user-defined-functions ?
另外mysql 的复制,像一些特定函数功能,slave可与master上要保持一致会有很多相关问题(如sleep()函数, last_insert_id(),以user-defined-functions