大约有 47,000 项符合查询结果(耗时:0.0641秒) [XML]

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Most underused data visualization [closed]

...substr(start.date, 9, 10), "&c=", substr(start.date, 1,4), "&d=", substr(end.date,6,7), "&e=", substr(end.date, 9, 10), "&f=", substr(end.date, 1,4), "&g=d&ignore=.csv", sep="") stock.data &l...
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Returning multiple objects in an R function [duplicate]

... 224 Unlike many other languages, R functions don't return multiple objects in the strict sense. The...
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SQL/mysql - Select distinct/UNIQUE but return all columns?

... 415 You're looking for a group by: select * from table group by field1 Which can occasionally b...
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How can I check if string contains characters & whitespace, not just whitespace?

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How to set the context path of a web application in Tomcat 7.0

... | edited Jul 24 '13 at 18:02 kosa 62.7k1212 gold badges114114 silver badges156156 bronze badges ...
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How do I get Flask to run on port 80?

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Learn C first before learning Objective-C [closed]

...ally 50% smaller, needs only 25% of the memory it used before and is about 400% faster at runtime. What I'm trying to say here: Every language has its pros and cons. C has pros and cons and so does Obj-C. However, the really great feature of Obj-C (that's why I even like it more than Java) is that ...
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Join/Where with LINQ and Lambda

...| edited May 27 '13 at 15:41 answered May 4 '10 at 17:57 Da...
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How to solve “Could not establish trust relationship for the SSL/TLS secure channel with authority”

... | edited Nov 14 '13 at 9:33 sharptooth 156k7979 gold badges461461 silver badges891891 bronze badges ...
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Base64 encoding in SQL Server 2005 T-SQL

I'd like to write a T-SQL query where I encode a string as a Base64 string. Surprisingly, I can't find any native T-SQL functions for doing Base64 encoding. Does a native function exist? If not, what's the best way to do Base64 encoding in T-SQL? ...