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Optimized update single row

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sunkaixuan
2017-11-01 20:31:45 +08:00
parent e3d1955a53
commit 7b015209c0
3 changed files with 20 additions and 4 deletions
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3
Src/Asp.Net/SqlServerTest/Demos/2_Update.cs
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@@ -62,6 +62,9 @@ namespace OrmTest.Demo
var t12 = db.Updateable<School>().AS("Student").UpdateColumns(it => new School() { Name = "jack" }).Where(it => it.Id == 1).ExecuteCommandAsync();
t12.Wait();
//update one columns
var count= db.Updateable<Student>().UpdateColumns(it => it.SchoolId == 1).Where(it => it.Id == 1).ExecuteCommand();
}
}
}

12
Src/Asp.Net/SqlSugar/Abstract/UpdateProvider/UpdateableProvider.cs
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@@ -129,6 +129,18 @@ namespace SqlSugar
return this;
}
public IUpdateable<T> UpdateColumns(Expression<Func<T, bool>> columns) {
var binaryExp = columns.Body as BinaryExpression;
Check.Exception(!binaryExp.NodeType.IsIn(ExpressionType.Equal), "No support {0}", columns.ToString());
Check.Exception(!(binaryExp.Left is MemberExpression), "No support {0}", columns.ToString());
Check.Exception(ExpressionTool.IsConstExpression(binaryExp.Left as MemberExpression), "No support {0}", columns.ToString());
var expResult = UpdateBuilder.GetExpressionValue(columns, ResolveExpressType.WhereSingle).GetResultString().Trim().TrimStart('(').TrimEnd(')');
string key = SqlBuilder.GetNoTranslationColumnName(expResult);
UpdateBuilder.SetValues.Add(new KeyValuePair<string, string>(SqlBuilder.GetTranslationColumnName(key), expResult));
this.UpdateBuilder.DbColumnInfoList = this.UpdateBuilder.DbColumnInfoList.Where(it => UpdateBuilder.SetValues.Any(v => SqlBuilder.GetNoTranslationColumnName(v.Key).Equals(it.DbColumnName, StringComparison.CurrentCultureIgnoreCase) || SqlBuilder.GetNoTranslationColumnName(v.Key).Equals(it.PropertyName, StringComparison.CurrentCultureIgnoreCase)) || it.IsPrimarykey == true).ToList();
return this;
}
public IUpdateable<T> UpdateColumns(Func<string, bool> updateColumMethod)
{
List<string> primaryKeys = GetPrimaryKeys();

1
Src/Asp.Net/SqlSugar/Interface/IUpdateable.cs
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@@ -25,6 +25,7 @@ namespace SqlSugar
/// <returns></returns>
IUpdateable<T> WhereColumns(Expression<Func<T, object>> columns);
IUpdateable<T> UpdateColumns(Expression<Func<T, object>> columns);
IUpdateable<T> UpdateColumns(Expression<Func<T, bool>> columns);
IUpdateable<T> UpdateColumns(Func<string, bool> updateColumMethod);
IUpdateable<T> UpdateColumns(Expression<Func<T, T>> columns);
IUpdateable<T> IgnoreColumns(Expression<Func<T, object>> columns);