存储过程基本语法与数据库

数据库 专栏收录该内容
¥59.90 ¥99.00
164篇文章

存储过程是一种在数据库中存储并可重复执行的代码块。它是数据库管理系统提供的一种功能强大的工具,用于实现复杂的业务逻辑和数据操作。本文将介绍存储过程的基本语法,并提供相应的源代码示例。

存储过程的创建

在数据库中创建存储过程需要使用特定的语法。下面是一种常见的数据库存储过程创建语法:

CREATE PROCEDURE procedure_name
    [input_parameters]
AS
BEGIN
    -- 存储过程的代码块
END
  • CREATE PROCEDURE关键字用于指示创建一个存储过程。
  • procedure_name是存储过程的名称,可以根据实际需求进行命名。
  • input_parameters是可选的输入参数列表,用于传递数据给存储过程。参数可以有不同的数据类型和约束。
深入剖析 YOLOv11 中的 C2PSA 注意力机制 YOLOv11中的C2PSA注意力机制在目标检测领域取得突破性进展。该机制通过跨通道分组交互和轻量级位置编码,在仅增加0.6%计算量的情况下提升mAP 1.5-2.3个百分点。C2PSA创新性地结合局部跨通道交互、位置编码和双分支并行调制,采用纯卷积实现自注意力,避免传统注意力机制的高计算复杂度。实验表明,C2PSA在COCO数据集上以微小计算代价显著提升检测性能,特别是对小目标和遮挡目标效果突出。该模块可直接嵌入YOLO架构,为轻量级目标检测提供新的优化方向。 阅读详情

相关推荐

从《视觉SLAM十四讲》到项目实战:一文读懂拓扑地图与语义地图为何是服务机器人的未来

本文探讨了服务机器人地图技术的演进,从传统几何地图到拓扑地图与语义地图的跨越。通过分析栅格地图的局限性和拓扑地图、语义地图的优势,揭示了它们在动态开放环境中的智能应用。文章还介绍了多模态语义融合架构和动态语义更新技术,为服务机器人的未来发展提供了技术路线图。

weixin_30292843的博客 478

ArcGIS栅格数据像元值与坐标值提取及Excel导出全流程解析

本文详细解析了使用ArcGIS将栅格数据批量提取像元值与坐标值并导出至Excel的全流程。通过“栅格转点”、“添加XY坐标”和“表转Excel”三大核心步骤,无需编程即可自动化处理遥感、环境等领域的空间数据,有效提升数据分析效率。

zeta9的博客 365

概率论基础-严士健 第二版 习题与补充1.6答案

概率论基础-严士健 第二版 习题与补充1.6答案 1.不独立。 设有一均匀正八面体,其第1,2,3,4面染红色,第1,2,3,5面染白色,第1,6,7,8面染黑色,现在以A,B,C分别表示投一次正八面体出现红、白、黑的事件,则 P(A)=P(B)=P(C)=12.P(A) = P(B) = P(C) = \frac{1}{2}.P(A)=P(B)=P(C)=21​. P(ABC)=18=P(A)P...

weixin_42341993的博客 2515

国产射频直采收发器CX8242KA JESD204C调试

杭州诚芯公司的CX8242KA是国内开发的极少数支持JESD204C接口的高速AD、DA,Serdes具备支持接收和发送,并且速率可以到25Gbps,在国内属于领先水平。250M参考时钟输入,AD采样率2.5G,DA采样率10G,3收2发,主通道模式4,反馈通道模式1,基带采样率1250M,线速率20.625G,收发同时配置混频625M。CX8242KA的204C接口模式支持10种模式,在手册上都有说明。2、 支持TX信道编码,RX信道解码,提升健壮性。这里使用模式4,支持双通道模式,并且反馈开启。

RFSOC的博客 6219

Stata实战入门:从数据导入到基础分析的全流程指南

本文提供了Stata实战入门的全流程指南,从数据导入、清洗到基础分析和可视化,帮助初学者快速掌握Stata的核心功能。通过详细的步骤和实用技巧,读者可以高效完成数据处理、变量操作、描述性统计和回归分析等任务,提升数据分析效率。

weixin_28327051的博客 383

Dirsearch的下载、安装和使用(全)

Dirsearch工具的下载、安装和使用,超详细超全面

weixin_68416970的博客 1万+

飞牛NAS新增虚拟机功能,如果使用虚拟机网卡直通安装ikuai软路由(如何解决OVS网桥绑定失败以及打开ovs后无法访问飞牛nas等问题)

飞牛NAS新增虚拟机功能,如果使用虚拟机网卡直通安装ikuai软路由

XiaoqiangClub的博客 1万+

Unity-TextMeshPro如何扩展材质实现字体Face+Outline流光效果

前言 TexeMeshPro 是Unity的一个Text文本插件,实现了比UGUI的Text,更好看的效果,跟高效的性能,所以深受大家的喜欢,但是再好的插件,也不是万能的,比如我们的策划有个新需求,要我们的VIP的名字比普通玩家有更好看的效果,例如:字体流光,外发光颜色扰动,字体贴图等等。那我们就需要去扩展TextMeshPRo的shader功能了。如下图所示 本文,我就带大家一起来扩展一下:如何扩展TextMeshProUGUI TextMesh原始面板 扩展功能后的面板 扩展TextMeshPro

TxNet 9675

ET2012新版免狗免安装绿色软件

ET2012新版免狗免安祖昂绿色软件。,新界面,新视觉,

深度学习工具包 DeepLearningToolbox

深度学习工具包Deprecation notice.-----This toolbox is outdated and no longer maintained.There are much better tools available for deep learning than this toolbox, e.g. [Theano](http://deeplearning.net/software/theano/), [torch](http://torch.ch/) or [tensorflow](http://www.tensorflow.org/)I would suggest you use one of the tools mentioned above rather than use this toolbox.Best, Rasmus.DeepLearnToolbox================A Matlab toolbox for Deep Learning.Deep Learning is a new subfield of machine learning that focuses on learning deep hierarchical models of data.It is inspired by the human brain's apparent deep (layered, hierarchical) architecture.A good overview of the theory of Deep Learning theory is[Learning Deep Architectures for AI](http://www.iro.umontreal.ca/~bengioy/papers/ftml_book.pdf)For a more informal introduction, see the following videos by Geoffrey Hinton and Andrew Ng.* [The Next Generation of Neural Networks](http://www.youtube.com/watch?v=AyzOUbkUf3M) (Hinton, 2007)* [Recent Developments in Deep Learning](http://www.youtube.com/watch?v=VdIURAu1-aU) (Hinton, 2010)* [Unsupervised Feature Learning and Deep Learning](http://www.youtube.com/watch?v=ZmNOAtZIgIk) (Ng, 2011)If you use this toolbox in your research please cite [Prediction as a candidate for learning deep hierarchical models of data](http://www2.imm.dtu.dk/pubdb/views/publication_details.php?id=6284)```@MASTERSTHESIS\{IMM2012-06284, author = "R. B. Palm", title = "Prediction as a candidate for learning deep hierarchical models of data", year = "2012",}```Contact: rasmusbergpalm at gmail dot comDirectories included in the toolbox-----------------------------------`NN/` - A library for Feedforward Backpropagation Neural Networks`CNN/` - A library for Convolutional Neural Networks`DBN/` - A library for Deep Belief Networks`SAE/` - A library for Stacked Auto-Encoders`CAE/` - A library for Convolutional Auto-Encoders`util/` - Utility functions used by the libraries`data/` - Data used by the examples`tests/` - unit tests to verify toolbox is workingFor references on each library check REFS.mdSetup-----1. Download.2. addpath(genpath('DeepLearnToolbox'));Example: Deep Belief Network---------------------```matlabfunction test_example_DBNload mnist_uint8;train_x = double(train_x) / 255;test_x = double(test_x) / 255;train_y = double(train_y);test_y = double(test_y);%% ex1 train a 100 hidden unit RBM and visualize its weightsrand('state',0)dbn.sizes = [100];opts.numepochs = 1;opts.batchsize = 100;opts.momentum = 0;opts.alpha = 1;dbn = dbnsetup(dbn, train_x, opts);dbn = dbntrain(dbn, train_x, opts);figure; visualize(dbn.rbm{1}.W'); % Visualize the RBM weights%% ex2 train a 100-100 hidden unit DBN and use its weights to initialize a NNrand('state',0)%train dbndbn.sizes = [100 100];opts.numepochs = 1;opts.batchsize = 100;opts.momentum = 0;opts.alpha = 1;dbn = dbnsetup(dbn, train_x, opts);dbn = dbntrain(dbn, train_x, opts);%unfold dbn to nnnn = dbnunfoldtonn(dbn, 10);nn.activation_function = 'sigm';%train nnopts.numepochs = 1;opts.batchsize = 100;nn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.10, 'Too big error');```Example: Stacked Auto-Encoders---------------------```matlabfunction test_example_SAEload mnist_uint8;train_x = double(train_x)/255;test_x = double(test_x)/255;train_y = double(train_y);test_y = double(test_y);%% ex1 train a 100 hidden unit SDAE and use it to initialize a FFNN% Setup and train a stacked denoising autoencoder (SDAE)rand('state',0)sae = saesetup([784 100]);sae.ae{1}.activation_function = 'sigm';sae.ae{1}.learningRate = 1;sae.ae{1}.inputZeroMaskedFraction = 0.5;opts.numepochs = 1;opts.batchsize = 100;sae = saetrain(sae, train_x, opts);visualize(sae.ae{1}.W{1}(:,2:end)')% Use the SDAE to initialize a FFNNnn = nnsetup([784 100 10]);nn.activation_function = 'sigm';nn.learningRate = 1;nn.W{1} = sae.ae{1}.W{1};% Train the FFNNopts.numepochs = 1;opts.batchsize = 100;nn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.16, 'Too big error');```Example: Convolutional Neural Nets---------------------```matlabfunction test_example_CNNload mnist_uint8;train_x = double(reshape(train_x',28,28,60000))/255;test_x = double(reshape(test_x',28,28,10000))/255;train_y = double(train_y');test_y = double(test_y');%% ex1 Train a 6c-2s-12c-2s Convolutional neural network %will run 1 epoch in about 200 second and get around 11% error. %With 100 epochs you'll get around 1.2% errorrand('state',0)cnn.layers = { struct('type', 'i') %input layer struct('type', 'c', 'outputmaps', 6, 'kernelsize', 5) %convolution layer struct('type', 's', 'scale', 2) %sub sampling layer struct('type', 'c', 'outputmaps', 12, 'kernelsize', 5) %convolution layer struct('type', 's', 'scale', 2) %subsampling layer};cnn = cnnsetup(cnn, train_x, train_y);opts.alpha = 1;opts.batchsize = 50;opts.numepochs = 1;cnn = cnntrain(cnn, train_x, train_y, opts);[er, bad] = cnntest(cnn, test_x, test_y);%plot mean squared errorfigure; plot(cnn.rL);assert(er<0.12, 'Too big error');```Example: Neural Networks---------------------```matlabfunction test_example_NNload mnist_uint8;train_x = double(train_x) / 255;test_x = double(test_x) / 255;train_y = double(train_y);test_y = double(test_y);% normalize[train_x, mu, sigma] = zscore(train_x);test_x = normalize(test_x, mu, sigma);%% ex1 vanilla neural netrand('state',0)nn = nnsetup([784 100 10]);opts.numepochs = 1; % Number of full sweeps through dataopts.batchsize = 100; % Take a mean gradient step over this many samples[nn, L] = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.08, 'Too big error');%% ex2 neural net with L2 weight decayrand('state',0)nn = nnsetup([784 100 10]);nn.weightPenaltyL2 = 1e-4; % L2 weight decayopts.numepochs = 1; % Number of full sweeps through dataopts.batchsize = 100; % Take a mean gradient step over this many samplesnn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.1, 'Too big error');%% ex3 neural net with dropoutrand('state',0)nn = nnsetup([784 100 10]);nn.dropoutFraction = 0.5; % Dropout fraction opts.numepochs = 1; % Number of full sweeps through dataopts.batchsize = 100; % Take a mean gradient step over this many samplesnn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.1, 'Too big error');%% ex4 neural net with sigmoid activation functionrand('state',0)nn = nnsetup([784 100 10]);nn.activation_function = 'sigm'; % Sigmoid activation functionnn.learningRate = 1; % Sigm require a lower learning rateopts.numepochs = 1; % Number of full sweeps through dataopts.batchsize = 100; % Take a mean gradient step over this many samplesnn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.1, 'Too big error');%% ex5 plotting functionalityrand('state',0)nn = nnsetup([784 20 10]);opts.numepochs = 5; % Number of full sweeps through datann.output = 'softmax'; % use softmax outputopts.batchsize = 1000; % Take a mean gradient step over this many samplesopts.plot = 1; % enable plottingnn = nntrain(nn, train_x, train_y, opts);[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.1, 'Too big error');%% ex6 neural net with sigmoid activation and plotting of validation and training error% split training data into training and validation datavx = train_x(1:10000,:);tx = train_x(10001:end,:);vy = train_y(1:10000,:);ty = train_y(10001:end,:);rand('state',0)nn = nnsetup([784 20 10]); nn.output = 'softmax'; % use softmax outputopts.numepochs = 5; % Number of full sweeps through dataopts.batchsize = 1000; % Take a mean gradient step over this many samplesopts.plot = 1; % enable plottingnn = nntrain(nn, tx, ty, opts, vx, vy); % nntrain takes validation set as last two arguments (optionally)[er, bad] = nntest(nn, test_x, test_y);assert(er < 0.1, 'Too big error');```[![Bitdeli Badge](https://d2weczhvl823v0.cloudfront.net/rasmusbergpalm/deeplearntoolbox/trend.png)](https://bitdeli.com/free "Bitdeli Badge")

老版QQ原生表情gif动态

这是老版的QQ表情,不过全是动态的的,Windows照片查看器是不会动的,可以右击用浏览器打开查看,再说一遍是老版的,只是分享给宁愿用老版也要动态的人。

怀旧版电脑GBC模拟器

再现原版GBC掌机的界面,电脑运行连游戏界面都一样大小,很怀旧,很真实,(英文版)强烈推荐,很小的文件,很难才找到的。

上一篇: 高可用性:保障数据库系统稳定运行的重要特性
下一篇: MySQL主从复制
普通网友
博客等级 码龄3年 146粉丝 164原创
评论
成就一亿技术人!
拼手气红包6.0元
还能输入1000个字符  | 博主筛选后可见
 
 条评论被折叠 查看
添加红包

请填写红包祝福语或标题

个

红包个数最小为10个

元

红包金额最低5元

当前余额3.43元 前往充值 >
需支付:10.00元
成就一亿技术人!
领取后你会自动成为博主和红包主的粉丝 规则
hope_wisdom
发出的红包
实付元
使用余额支付
点击重新获取
扫码支付
钱包余额 0

抵扣说明:

1.余额是钱包充值的虚拟货币,按照1:1的比例进行支付金额的抵扣。
2.余额无法直接购买下载,可以购买VIP、付费专栏及课程。

余额充值