Inline method of DB servers

最新推荐文章于 2024-09-07 22:41:34 发布
最新推荐文章于 2024-09-07 22:41:34 发布 · 103 阅读 · 0
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#Java

本文探讨了在不同数据库类型中 CHARINDEX 与 INSTR 函数的应用。具体而言，当使用 MSSQL 时采用 CHARINDEX 函数，而对于其他数据库则推荐使用 INSTR 函数来查找指定字符串的位置。
1. CHARINDEX vs INSTR
if ("MSSQL".equals(DATABASE_TYPE)) {
    express = " CHARINDEX(bas.COLUMN_ID,col.expression) ";
} else {
    express = " INSTR(col.expression, bas.COLUMN_ID) ";
}
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#-------------------------------------------------- # http://www.snort.org Snort Ruleset # Contact: snort-sigs@lists.sourceforge.net #-------------------------------------------------- # $Id$ # ################################################### # This file contains a sample snort configuration. # You should take the following steps to create your own custom configuration: # # 1) Set the network variables. # 2) Configure the decoder # 3) Configure the base detection engine # 4) Configure dynamic loaded libraries # 5) Configure preprocessors # 6) Configure output plugins # 7) Customize your rule set ################################################### ################################################### # Step #1: Set the network variables. For more information, see README.variables ################################################### # Setup the network addresses you are protecting var HOME_NET 192.168.119.0/24 # Set up the external network addresses. 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See README.INLINE # config layer2resets: 00:06:76:DD:5F:E3 ################################################### # Step #4: Configure dynamic loaded libraries. # For more information, see Snort Manual, Configuring Snort - Dynamic Modules ################################################### # path to dynamic preprocessor libraries #dynamicpreprocessor directory /usr/local/lib/snort_dynamicpreprocessor/ # path to base preprocessor engine #dynamicengine /usr/local/lib/snort_dynamicengine/libsf_engine.so # path to dynamic rules libraries # dynamicdetection directory /usr/local/lib/snort_dynamicrules # 配置Windows下的动态模块路径 dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_dce2.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_dns.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_ftptelnet.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_sdf.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_smtp.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_ssh.dll dynamicpreprocessor file C:\Snort\lib\snort_dynamicpreprocessor\sf_ssl.dll dynamicengine C:\Snort\lib\snort_dynamicengine\sf_engine.dll ################################################### # Step #5: Configure preprocessors # For more information, see the Snort Manual, Configuring Snort - Preprocessors ################################################### # Target-based IP defragmentation. 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提供了一个基于51单片机的RFID门禁系统的完整资源文件，包括PCB图、原理图、论文以及源程序。该系统设计由单片机、RFID-RC522频射卡模块、LCD显示、灯控电路、蜂鸣器报警电路、存储模块和按键组成。系统支持通过密码和刷卡两种方式进行门禁控制，灯亮表示开门成功，蜂鸣器响表示开门失败。 资源内容 PCB图：包含系统的PCB设计图，方便用户进行硬件电路的制作和调试。 原理图：详细展示了系统的电路连接和模块布局，帮助用户理解系统的工作原理。 论文：提供了系统的详细设计思路、实现方法以及测试结果，适合学习和研究使用。 源程序：包含系统的全部源代码，用户可以根据需要进行修改和优化。 系统功能 刷卡开门：用户可以通过刷RFID卡进行门禁控制，系统会自动识别卡片并判断是否允许开门。 密码开门：用户可以通过输入预设密码进行门禁控制，系统会验证密码的正确性。 状态显示：系统通过LCD显示屏显示当前状态，如刷卡成功、密码错误等。 灯光提示：灯亮表示开门成功，灯灭表示开门失败或未操作。 蜂鸣器报警：当刷卡或密码输入错误时，蜂鸣器会发出报警声，提示用户操作失败。 适用人群 电子工程、自动化等相关专业的学生和研究人员。 对单片机和RFID技术感兴趣的爱好者。 需要开发类似门禁系统的工程师和开发者。
51单片机+HC05蓝牙模块+手机app+智能小车控制套件
11-26
此资源文件为您提供了一个基于51单片机的智能小车控制套件的详细方案，通过MIT App Inventor搭建的手机app实现对智能小车的远程控制。 资源简介 资源中包含了一个通过HC05蓝牙模块与51单片机连接的智能小车控制系统，用户可以通过手机app发送指令，实现小车的前进、后退、左转和右转。此外，我们还为小车增加了蜂鸣器报警和LED电灯功能，使其具备更多的互动性和实用性。 功能特点 使用MIT App Inventor搭建的手机app，操作简单方便。 51单片机接收蓝牙模块的指令，控制小车运动。 具备蜂鸣器报警功能，可应用于多种场景。 LED电灯功能，为小车提供夜间照明。 文件内容 本资源文件包含以下内容： 51单片机程序代码 HC05蓝牙模块配置说明 手机app设计教程 智能小车硬件连接示意图 请根据您的需求，仔细阅读相关文档，逐步搭建属于您的智能小车控制系统。祝您在使用过程中收获满满，尽情享受科技带来的乐趣！
51单片机c源码-99倒计时
11-26
51单片机c源码-99倒计时
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