MongoDB更改Collection语言

db.createCollection('space_users_new',{collation:{locale:'zh'}})
db.space_users.copyTo('space_users_new')
db.space_users.renameCollection('space_users_old',true)
db.space_users_new.renameCollection('space_users',false)
// 确认后再执行旧表的删除
db.space_users_old.drop()