我有这张桌子：
auctionid bid bidtime bidder bidderrate openbid price
8211851222 55 6.021053 smoothy43m 69 50 161
8211851222 51 6.378843 ahmadf316 1 50 161
8211851222 54 6.379225 ahmadf316 1 50 161
8211851222 59.66 6.499745 dang800 5 50 161
8211851222 57 6.654282 txrang10 98 50 161
8211851222 60 6.654583 txrang10 98 50 161
8211851222 65 6.713646 em19680 23 50 161
8211851222 65 6.734225 justin 10 50 161
8211851222 80 6.736042 losiewiczp 1683 50 161
8211851222 67 6.772292 smoothy43m 69 50 161
8211851222 69.01 …