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SQL Query to concatenate column values from multiple rows in Oracle

... LISTAGG delivers the best performance if sorting is a must(00:00:05.85) SELECT pid, LISTAGG(Desc, ' ') WITHIN GROUP (ORDER BY seq) AS description FROM B GROUP BY pid; COLLECT delivers the best performance if sorting is not needed(00:00:02.90): SELECT pid, TO_STRING(CAST(COLLECT(Desc) AS v...
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Add st, nd, rd and th (ordinal) suffix to a number

...7th 78 78th 79 79th 80 80th 81 81st 82 82nd 83 83rd 84 84th 85 85th 86 86th 87 87th 88 88th 89 89th 90 90th 91 91st 92 92nd 93 93rd 94 94th 95 95th 96 96th 97 97th 98 98th 99 99th 100 100th 101 101st 102 102nd 103 103rd 104 104th 105 105th 106 106th...
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How can I resize an image using Java?

...d to sit down and write a simple implementation that would address that 80-85% use-cases where you have an image and probably want a thumbnail for it -- either as fast as possible or as good-looking as possible (for those that have tried, you'll notice doing a Graphics.drawImage even with BICUBIC in...
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Converting numpy dtypes to native python types

...mpy.asscalar(x) for x in numpy.linspace(1.0, 0.0, 21)]) [1.0, 0.95, 0.9, 0.85, 0.8, 0.75, 0.7, 0.6499999999999999, 0.6, 0.55, 0.5, 0.44999999999999996, 0.3999999999999999, 0.35, 0.29999999999999993, 0.25, 0.19999999999999996, 0.1499999999999999, 0.09999999999999998, 0.04999999999999993, 0.0] As you ...
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How do I measure request and response times at once using cURL?

...dian max Connect: 20 22 0.8 22 26 Processing: 59 85 108.7 68 911 Waiting: 59 85 108.7 67 910 Total: 80 107 108.8 90 932 Percentage of the requests served within a certain time (ms) 50% 90 66% 91 75% 93 80% 95...
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译文:理解Java中的弱引用 - 更多技术 - 清泛网 - 专注C/C++及内核技术

...文原文进行研究。 Java高阶推荐 Java虚拟机规范(Java SE 7) 图灵程序设计丛书:Java性能优化权威指南 深入理解Java虚拟机:JVM高级特性与最佳实践(第2) Java 弱引用
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How can I see the request headers made by curl when sending a request to the server?

...o: About to connect() to www.google.com port 80 (#0) == Info: Trying 209.85.229.104... == Info: connected == Info: Connected to www.google.com (209.85.229.104) port 80 (#0) => Send header, 145 bytes (0x91) 0000: GET / HTTP/1.1 0010: User-Agent: curl/7.16.3 (powerpc-apple-darwin9.0) libcurl/7.16...
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Format decimal for percentage values?

...rmat string. This will vary by culture: String.Format("Value: {0:P2}.", 0.8526) // formats as 85.26 % (varies by culture) share | improve this answer | follow ...
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What is console.log?

...8 in IE9 or IE10 http://msdn.microsoft.com/en-us/library/ie/gg589507(v=vs.85).aspx http://msdn.microsoft.com/en-us/library/dd565628(v=vs.85).aspx If you must access the console in IE6 for IE7 use the Firebug Lite bookmarklet http://getfirebug.com/firebuglite/ look for stable bookmarklet http:/...
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Create a hexadecimal colour based on a string with JavaScript

... Martin Tournoij 22.1k1717 gold badges8585 silver badges116116 bronze badges answered May 2 '13 at 22:45 Joe FreemanJoe Freeman ...