关于一次更新一万条数据的问题

我用Update 一次更新链接数据库一个表的一万条数据，这个表有二十多个字段，很慢，有什么办法可以快点？
以下是更新语句:
--更新本地数据库产品表中已更新而远程数据库产品表中还没有更新的产品记录
UPDATE NET.HzmjxcXy.DBO.spzl SET NET.HzmjxcXy.DBO.spzl.Txm = b.Txm,NET.HzmjxcXy.DBO.spzl.Spmc = b.Spmc,NET.HzmjxcXy.DBO.spzl.Spgg = b.Spgg,NET.HzmjxcXy.DBO.spzl.Spcd = b.Spcd,
NET.HzmjxcXy.DBO.spzl.Mindw = b.Mindw,NET.HzmjxcXy.DBO.spzl.Middw = b.Middw,NET.HzmjxcXy.DBO.spzl.Midbl = b.Midbl,NET.HzmjxcXy.DBO.spzl.Maxdw = b.Maxdw,
NET.HzmjxcXy.DBO.spzl.Maxbl = b.Maxbl,NET.HzmjxcXy.DBO.spzl.Cydw = b.Cydw,NET.HzmjxcXy.DBO.spzl.Cybl = b.Cybl,NET.HzmjxcXy.DBO.spzl.Xsjg1 = b.Xsjg1,NET.HzmjxcXy.DBO.spzl.Xsjg2 = b.Xsjg2,
NET.HzmjxcXy.DBO.spzl.Xsjg3 = b.Xsjg3,NET.HzmjxcXy.DBO.spzl.Xsjg4 = b.Xsjg4,NET.HzmjxcXy.DBO.spzl.Xsjg5 = b.Xsjg5,NET.HzmjxcXy.DBO.spzl.Xsjg6 = b.Xsjg6,NET.HzmjxcXy.DBO.spzl.Jhjg1 = b.Jhjg1,
NET.HzmjxcXy.DBO.spzl.Jhjg2 = b.Jhjg2,NET.HzmjxcXy.DBO.spzl.Jhjg3 = b.Jhjg3,NET.HzmjxcXy.DBO.spzl.Jhjg4 = b.Jhjg4,NET.HzmjxcXy.DBO.spzl.Highsl = b.Highsl,NET.HzmjxcXy.DBO.spzl.Lowsl = b.Lowsl,
NET.HzmjxcXy.DBO.spzl.Yxq = b.Yxq,NET.HzmjxcXy.DBO.spzl.VisibleBZ = b.VisibleBZ,NET.HzmjxcXy.DBO.spzl.Cs = b.Cs,NET.HzmjxcXy.DBO.spzl.Memo = b.Memo
FROM NET.HzmjxcXy.DBO.spzl a INNER JOIN (SELECT Spdm,Txm,Spmc,Spgg,Spcd,Mindw,Middw,Midbl,Maxdw,Maxbl,Cydw,Cybl,Xsjg1,Xsjg2,Xsjg3,Xsjg4,Xsjg5,Xsjg6,Jhjg1,Jhjg2,Jhjg3,Jhjg4,Highsl,Lowsl,Yxq,VisibleBZ,Cs,Memo
FROM spzl)b
ON a.spdm = b.spdm
WHERE a.spdm = b.spdm