index_sql_str = "select %s from user where %s = %d" % ("social_id", "user_id", u_id)
  db_cursor.execute(index_sql_str)
  rows = ['"' + row[0] + '"' for row in db_cursor.fetchall()]
  if len(rows) == 0:
    return None
  result = []
  sql_str = "select %s user_detail where %s in (%s)" % (",".join(user_third_column_name), "social_id", ",".join(rows))
  db_cursor.execute(sql_str)

> a = 'test"test'
> "insert into user {0}".format(a)
'insert into user test"test'
> b = "test'test"
> "insert into user {0} where {1} = x".format(a,b)
'insert into user test"test where test\'test = x'

#@ 1 - 正常执行的mysql 语句为:
 select * from RESIDENTIAL_AREA where RA_ID like 'HF-%' 
 
#@ 2 - 在python 代码中为： 最后面的那个 % 需要4个% 去代替（raid = HF-）
select_sql = ''' select * from RESIDENTIAL_AREA where RA_ID 
  like '%s%%%%' ''' % (raid)
 
 
 
#@ 3 - python 代码中 输出结果为：print(select_sql)
 select * from RESIDENTIAL_AREA where RA_ID like 'HF-%%'