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Why do I need to explicitly specify all columns in a SQL "GROUP BY" clause - why not "GROUP BY *"?
This has always bothered me - why does the GROUP BY clause in a SQL statement require that I include all non-aggregate columns? These columns should be included by default - a kind of \"GROUP BY *\" -[详细]
2022-12-29 21:17 分类：问答Creating own LiveWallpaperPreview?
I would like to create my own LiveWallpaperPreview, i.e. to show the user a fullscreen preview of what the selected Live Wallpaper looks like (without the \"Set Wallpaper\" and \"Settings\" button tha[详细]
2022-12-29 07:31 分类：问答excel to oracle db using VS 2005 C#
I want to build a utility that can import data from excel 开发者_开发问答sheet(columns are fixed but sheets can be any number) to oracle db.Can you suggest how should I:[详细]
2022-12-17 03:13 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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