superset | 易学教程

Is objective C 2.0 a proper superset of C?

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问题 I've heard that objective-C is a proper superset of C, but is objective-C 2.0? The reason I ask is that either it isn't, or I misunderstand the phrase 'proper superset', because this code is valid C syntax: #import <stdio.h> int main () { char *nil = "hello"; printf("%s\n",nil); } But does not compile in Objective-C 2.0. Obviously, this is an easily fixable problem, but I'm writing a paper, and feel that this is something that should be pointed out. 回答1: nil is not a keyword. nil is defined

Which part of SQLalchemy's dialect is responsible for pre-processing queries?

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问题 Apache Superset has some kind of quirk, where any temporal query is sent with datetimes, even when the respective columns are mere dates. To work around it, I wanted to add some preprocessing to any passing query, so that datetimes are swapped by dates if the respective columns require it. Any insight I gained about writing the dialect came by comparing ready-made code, which is often repeatable, as other writers seem to encounter the same problem. I haven't so far found anything tangible to

Issue in deleting supersets in Matlab

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问题 i've a set of data consisting of sets i want to remove super sets for which subsets are present as follows: a{1} = [5] a{2} = [4 11 14] a{3} = [1] a{4} = [5 16] a{5} = [5] a{6} = [11 16] a{7} = [11] a{8} = [16] a{9} = [9 14 17] a{10} = [14] [ii, jj] = ndgrid(1:numel(a)); s = cellfun(@(x,y) all(ismember(x,y)), a(ii), a(jj)); s = triu(s,1); %// count each pair just once, and remove self-pairs similarity = a(~any(s,1)); celldisp(similarity) the result is as follows: a{1} = [5] a{2} = [4 11 14] a

Superset Loading issue on ubuntu

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问题 I am using Superset from Airbnb to use it for our BI needs. I have installed it on my local mac and also on an ubuntu server. Typically we want to have the server one as the whole team can access it. Both are running after installing that with docker. However the one running on my mac is able to show the UI correctly. For ex. when I click on Sql Query editor on Superset it is able to show me the editor UI. However the one running on server, on clicking the query editor it goes to the home

如何用开源bi，打造自己的轻量级bi系统

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【推荐】2019 Java 开发者跳槽指南.pdf(吐血整理) >>> 对于程序员来说，开源的东西都是好的，别的不说，因为可以自己自己随意开发，毕竟每个人都喜欢自己写的代码嘛，也或者，就是不想花钱哈哈哈哈（扎心了）就拿最近很火的BI来说吧，BI分两种：开源BI和商用BI，说起开源BI就是有爱又恨，这一切都要从微软带起了商业风说起.... 我在网上搜到了一下2018年BI的市场占有率：说到软件，可能第一反应就是国外的好，于是就先尝试了国外的开源BI。第一个接触的开源BI是pentaho，实在是太臃肿了，花了半年时间没有搞定，bug又多，修改不了。第二个是superset，可视化很强大，不过需要安装Linux，对于非技术人员很不友好，毕竟现在的BI都主打自助式。第三个开源BI就是JasperReports了，这是程序员最受欢迎、最常用的开源报表工具，常和ireport一起搭配使用，不过它有两个致命的缺点：需要学习编程，不支持多源数据源，这无疑是把自己未来的路给封死了....使用了这么多之后，我们决定试试国内的开源BI。国内的开源BI很多都是假开源，阉割很多核心功能，或者是商业用就要收费。而BI产品又很贵，在商业bi用的比较多的就是tableau，sever价格10万，10个账号，增加一个账号需要1万。由于最近要给公司实施BI，和工程师聊过，如果自己开发一套BI的话，工作量非常大

Apache superset: cannot read metadata from Athena

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问题 I am trying to access Athena from superset, the connection is successful and could see all the schema and tables in SQL editior(Enabled expose this db in SQL lab). On SQL editor while loading the metadata it returns following error: ERROR OCCURRED WHILE FETCHING TABLE METADATA On Athena, it runs the following query SELECT table_schema, table_name, column_name, data_type, is_nullable, column_default, ordinal_position, comment FROM information_schema.columns And this query return following

How to get Apache Superset to run on a specified path

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问题 I am running Apache Superset at the following address: http://superset.example.com:8088 That gets redirected to: http://superset.example.com:8088/superset/welcome Ideally, users would get redirected to: http://superset.example.com:8088/welcome How can that be accomplished? As well I would like for it to run under port 80 so the port doesn't need to be specified but I haven't been able to do that either. 回答1: This issue covers what you're talking about: https://github.com/apache/incubator

Superset: command not found

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问题 I have installed superset using pip install superset command. Then i try to superset db upgrade but it's saying superset: command not found Can anyone help me here? 回答1: From Superset documentation you should do this: # Install superset pip install superset # Create an admin user (you will be prompted to set username, first and last name before setting a password) fabmanager create-admin --app superset # Initialize the database superset db upgrade # Load some data to play with superset load

Is asset management a superset of source control [closed]

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问题 Closed . This question is opinion-based. It is not currently accepting answers. Want to improve this question? Update the question so it can be answered with facts and citations by editing this post. Closed 5 months ago . Do you take the entire asset management into consideration when planning your source control solution. For instance: images, external links, content, specs and data? I know there enough to wrestle with in getting source control to work effectively, but I often see okay

Where are label_colour keys stored in apache-superset?

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问题 Version: Docker instance from here According to the docs I can edit colours based on labels; It is possible on a per-dashboard basis by providing a mapping of labels to colors in the JSON Metadata attribute using the label_colors key. By adjusting the JSON found as below; Where my code for JSON is; { "filter_immune_slices": [], "timed_refresh_immune_slices": [], "filter_immune_slice_fields": {}, "expanded_slices": {}, "label_colors": { "A": "#007F3D", "B": "#2C9F29", "C": "#9DCB3C", "D": "