查询全国所有的券商名录
SELECT id,security,province,city,borough FROM t_security GROUP BY security ;
查询某个省份的所有券商名录
SELECT id,security,province,city,borough FROM t_security WHERE py_province='sd' GROUP BY security ;
查询某个省份的某个城市的所有券商名录
SELECT id,security,province,city,borough FROM t_security WHERE py_province='sd' AND py_city='jns' GROUP BY security ;
查询某个省份的 城市 的县区的 券商名单
SELECT id,security,province,city,borough FROM t_security WHERE py_province='sd' AND py_city='jns' AND py_borough='lcq' GROUP BY security ;