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varchar(20):20指的是表中的a字段能存储的最大字符个数 In contrast to CHAR, VARCHAR values are stored as a 1-byte or 2-byte length prefix plus data. The length prefix indi 阅读全文
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# Enable the async interface. set target-async 1 # If using the CLI, pagination breaks non-stop. set pagination off # Finally, turn it on! set non-sto 阅读全文
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/*static learning */ class one { public int a = 5; static { // 类加载时就运行代码码 System.out.println("static"); } static { // static int b=2; error System.out 阅读全文
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https://software.intel.com/en-us/articles/pin-a-binary-instrumentation-tool-downloads Introduction to Intel Pin Introduction to Intel Pin Original art 阅读全文