多分支查询
SELECT
(CASE WHEN (marketprice > 0.1 and marketprice < 2) then marketprice + 1
WHEN (marketprice > 2.1 and marketprice < 5) then marketprice + 3
WHEN (marketprice > 5 and marketprice < 10) then marketprice + 5
WHEN (marketprice > 10 and marketprice < 20) then marketprice + 10
WHEN (marketprice > 20 and marketprice < 30) then marketprice + 18
WHEN (marketprice > 30 and marketprice < 50) then marketprice + 30
WHEN (marketprice > 50 and marketprice < 100) then marketprice + 40
else null end) AS marketprice
from ims_ewei_shop_goods;
分库分表
实践：http://blog.csdn.net/czbing308722240/article/details/52350219
)
