I think you could consider GoodData (www.gooddata.com) - a cloud business intelligence solution. It's not free but definitely cheaper than Tableau, especially if you want to enable multiple users to create ad hoc reports.
GoodData enables you to create remote projects (= cloud based data marts) and provides a convenient user interface to instantly create or edit ad hoc reports or to organize reports into dashboards.
You can use the GoodData command line tool to connect to existing data sources and load them into your GoodData project, see https://developer.gooddata.com/getting-started/ for details or let me know if you'd need any help to set up your project.
Quick disclaimer: I work at GoodData and I've written some parts of the CL tool mentioned above.
for combining several types of datasources and creating reports from them, I use BellaDati BI (www.belladati.com). They have a completely FREE personal version (with no functionality limits) after registration here http://www.trgiman.eu/en/belladati/product/personal or you can log in with Google account directly on https:/service.belladati.com
it handles XLS, CSV, XML, databases
supports joins of data sets
crates tables, pivot tables and charts with interactive drill down
exports of reports to csv, xls ...
It should be the suitable tool for you. The paid tariffs of this product are for bigger teams and companies.
Web Pivot Table is a great choice. It is web based and provides ad-hoc reporting functions to both CSV/Excel data files and OLAP cubes. You can use free edition for free and if you want to customize it and embed it into your web application, the price is far less than Tableau.
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我认为您可以考虑 GoodData (www.gooddata.com) - 一个云商业智能解决方案。它不是免费的，但绝对比 Tableau 便宜，特别是如果您希望允许多个用户创建临时报告。
GoodData 使您能够创建远程项目（=基于云的数据集市），并提供方便的用户界面来立即创建或编辑临时报告或将报告组织到仪表板中。
您可以使用 GoodData 命令行工具连接到现有数据源并将其加载到您的 GoodData 项目中，请参阅 https://developer.gooddata.com/getting-started/ 了解详细信息，或者如果您需要任何帮助来设置您的项目，请告诉我。
快速免责声明：我在 GoodData 工作，并且编写了上面提到的 CL 工具的一些部分。
帕维尔
I think you could consider GoodData (www.gooddata.com) - a cloud business intelligence solution. It's not free but definitely cheaper than Tableau, especially if you want to enable multiple users to create ad hoc reports.
GoodData enables you to create remote projects (= cloud based data marts) and provides a convenient user interface to instantly create or edit ad hoc reports or to organize reports into dashboards.
You can use the GoodData command line tool to connect to existing data sources and load them into your GoodData project, see https://developer.gooddata.com/getting-started/ for details or let me know if you'd need any help to set up your project.
Quick disclaimer: I work at GoodData and I've written some parts of the CL tool mentioned above.
Pavel
也许这是一个老问题，但我最近遇到了一个名为 Microsoft PowerPivot 的出色工具。这正是我一直在寻找的东西！
Maybe it's an old question, but I've recently came across the wonderful tool called Microsoft PowerPivot. It is just the thing I was looking for!
为了组合多种类型的数据源并从中创建报告，我使用 BellaDati BI (www.belladati.com)。在这里注册后，他们有一个完全免费的个人版本（没有功能限制）http://www .trgiman.eu/en/belladati/product/personal 或者您可以直接在 https://service.belladati.com 上使用 Google 帐户登录
...
它应该是适合您的工具。该产品的付费关税适用于较大的团队和公司。
彼得
for combining several types of datasources and creating reports from them, I use BellaDati BI (www.belladati.com). They have a completely FREE personal version (with no functionality limits) after registration here http://www.trgiman.eu/en/belladati/product/personal or you can log in with Google account directly on https:/service.belladati.com
...
It should be the suitable tool for you. The paid tariffs of this product are for bigger teams and companies.
Peter
网络数据透视表是一个不错的选择。它基于 Web，并为 CSV/Excel 数据文件和 OLAP 多维数据集提供临时报告功能。您可以免费使用免费版，如果您想自定义它并将其嵌入到您的 Web 应用程序中，价格远低于 Tableau。
这是 演示 和 文档。
Web Pivot Table is a great choice. It is web based and provides ad-hoc reporting functions to both CSV/Excel data files and OLAP cubes. You can use free edition for free and if you want to customize it and embed it into your web application, the price is far less than Tableau.
Here is Demo and Documents.