三、编辑 Update set

文档目录

开始使用  初始化查询实例:

LambdaToSql.SqlClient DB = new LambdaToSql.SqlClient();

更新单个实体对象,必须有主键Guid

var entity = DB.QueryTable<EntityModel.System_UserInfo>(ex => ex.Guid == Guid.Parse("7ced7595-32ab-471a-a92d-1698abda04b0")).FirstOrDefault();
entity.PassWord = "";
var i = DB.UpdateTble(entity).ExecuteNonQuery();

var guid = Guid.Parse("7ced7595-32ab-471a-a92d-1698abda04b0");
var i = DB.UpdateTble(new EntityModel.System_UserInfo() { Guid = guid, PassWord = "" }).ExecuteNonQuery();

更新特定字段

var entity = DB.QueryTable<EntityModel.System_UserInfo>(ex => ex.Guid == Guid.Parse("7ced7595-32ab-471a-a92d-1698abda04b0")).FirstOrDefault();
entity.PassWord = "";
entity.IdCard = "";
var i = DB.UpdateTble(entity).UpdateColumns(ex => new { ex.PassWord, ex.IdCard }).ExecuteNonQuery();

忽略特定字段,其他字段都更新

var entity = DB.QueryTable<EntityModel.System_UserInfo>(ex => ex.Guid == Guid.Parse("7ced7595-32ab-471a-a92d-1698abda04b0")).FirstOrDefault();
entity.PassWord = "";
entity.IdCard = "";
var i = DB.UpdateTble(entity).UpdateColumns(ex => new { ex.ImgUrl, ex.LoginName }).ExecuteNonQuery();

条件批量更新

var i = DB.UpdateTble(new EntityModel.System_UserInfo() { PassWord = "", IdCard = "" }).Where(ex => ex.PassWord == "").ExecuteNonQuery();

说明

NULL列不做更新处理

暂时只支持Guid类型单主键,后续会增加int自增主键