par_list_stock  = "pre_close","open","high","low","close","volume","amt","dealnum"
par_list_future = "pre_close","open","high","low","close","volume","amt","oi"
par_list_fund   = "pre_close","open","high","low","close","volume","amt"

FIELD_SECURITY_GENERAL = ''
FIELD_COMPANY_GENERAL = ''
# field name 
# field[0]=index field

par_list_stock  = "pre_close","open","high","low","close","volume","amt","dealnum"
par_list_future = "pre_close","open","high","low","close","volume","amt","oi"
par_list_fund   = "pre_close","open","high","low","close","volume","amt"

FIELD_SECURITY_GENERAL = "sec_code", "sec_name","close_price","total_market_value",
                            "mkt_cap_float","trade_status","last_trade_day","ipo_day","province",
                            "sec_type","listing_board","exchange"
FIELD_COMPANY_GENERAL = "company_name","inception_date","ipo_date","outstanding_shares","sec_type",
                            "regcapital","chairman","discloser","address","office","zipcode",
                            "telephone","fax","website","comp_name_eng"
add some search parameters