03 2019 档案
摘要:SELECT表名称 = case when a.colorder=1 then d.name else '' end,表说明 = case when a.colorder=1 then isnull(f.value,'') else '' end,字段序号 = a.colorder,字段名 = a.
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摘要:https://api.nuget.org/v3/index.json
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摘要:今天使用EF做查询 var result = from a in db.Users join b in db.Roles on a.UserID equals b.UserID//注意此处equals 之前的字段是a不能是b select new {UserID = a.UserID,UserNam
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