Visual C# using aggregate functions First or Last seeking the first or last record in the data table, remove the first and last record in the database corresponding data table, very accurate, high efficiency, for example, can quickly identify sales of the best and the worst of the two products, learn about aggregate functions it, this is a good example of

FirstLast\FirstLast\bin\Debug\db_database.mdb
.........\.........\FirstLast.csproj
.........\.........\Form1.cs
.........\.........\Form1.Designer.cs
.........\.........\Form1.resx
.........\.........\Program.cs
.........\.........\...perties\AssemblyInfo.cs
.........\.........\..........\Resources.Designer.cs
.........\.........\..........\Resources.resx
.........\.........\..........\Settings.Designer.cs
.........\.........\..........\Settings.settings
.........\FirstLast.sln
.........\FirstLast.suo
.........\.........\bin\Debug
.........\.........\bin
.........\.........\obj
.........\.........\Properties
.........\FirstLast
FirstLast

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