FAQ(41):Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

USB-Blaster在Win11报错?3分钟搞定驱动兼容性问题(Quartus 21.4实测) 本文针对Windows 11系统下USB-Blaster驱动安装问题,提供了一套快速解决方案。通过优化驱动安装流程、绕过签名验证及设备管理器高级技巧,帮助开发者在3分钟内解决Quartus 21.4的兼容性问题,提升FPGA调试效率。 阅读详情
欢迎扫二维码关注公众号,获取技术干货

2018/1/3

spring对Mybatis整合,

看Log:

org.springframework.jdbc.BadSqlGrammarException: 
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b.providerId=1,b.isPayment=2
		    and b.providerId=p.id' at line 3
### The error may exist in com/smbms/dao/BillMapper.xml
### The error may involve com.smbms.dao.BillMapper.billShowByCondition-Inline
### The error occurred while setting parameters
### SQL: select b.billCode,b.productName,p.proName,b.totalPrice,b.isPayment,b.creationDate     from smbms_bill b,smbms_provider p     where b.produceName=?,b.providerId=?,b.isPayment=?       and b.providerId=p.id
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b.providerId=1,b.isPayment=2
		    and b.providerId=p.id' at line 3
; bad SQL grammar []; nested exception is com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b.providerId=1,b.isPayment=2
		    and b.providerId=p.id' at line 3
	at org.springframework.jdbc.support.SQLErrorCodeSQLExceptionTranslator.doTranslate(SQLErrorCodeSQLExceptionTranslator.java:231)
	at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:73)
	at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:73)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
	at com.sun.proxy.$Proxy7.selectList(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
	at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:137)
	at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:75)
	at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:53)
	at com.sun.proxy.$Proxy8.billShowByCondition(Unknown Source)
	at com.smbms.service.BillServiceImpl.findBillsWithConditionsByThressConditions(BillServiceImpl.java:19)
	at com.smbms.service.BillServiceImplTest.test(BillServiceImplTest.java:32)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:86)
	at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
	at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'b.providerId=1,b.isPayment=2
		    and b.providerId=p.id' at line 3
	at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
	at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
	at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
	at java.lang.reflect.Constructor.newInstance(Unknown Source)
	at com.mysql.jdbc.Util.handleNewInstance(Util.java:425)
	at com.mysql.jdbc.Util.getInstance(Util.java:408)
	at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:943)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3973)
	at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3909)
	at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2527)
	at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2680)
	at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2487)
	at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1858)
	at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:1197)
	at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
	at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.apache.ibatis.logging.jdbc.PreparedStatementLogger.invoke(PreparedStatementLogger.java:59)
	at com.sun.proxy.$Proxy10.execute(Unknown Source)
	at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:63)
	at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:79)
	at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:63)
	at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:324)
	at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:156)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:109)
	at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:83)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:148)
	at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:433)
	... 31 more


解释:
我的sql语句写错了!!
使用where多条件刷选时,条件之间要用and分割。

 

 

 

 

 

 

PrimeTime low power-多电压设计流程(1) PrimeTime支持使用IEEE 1801统一电源格式(UPF)标准来指定设计的多电压特性。PrimeTime能够在多电压供电和使用set_voltage命令在特定电源网上设置电压值的情况下,正确分析设计的时序。要了解如何使用多电压设计流程,请参考以下内容:- 多电压分析需求- 指定电源连接性- UPF命令- GoldenUPF流程- 多重电源电压分析。 阅读详情

相关推荐

[Unity]-[UI]-[Image] 关于UI精灵图资源导入设置的详细解释

如果纹理存储了有特定含义的信息,并且您需要着色器中的确切值(例如,平滑度或金属度),请禁用此属性。此选项允许将纹理编码为特定格式(RGBM 或 dLDR,具体取决于平台)并通过后期处理步骤对纹理数据进行处理(推拉式扩张通道)。使用在3D模型的专业法线贴图。通用的纹理类型,一般在Material上的材质图片参数使用,比如漫反射、法线贴图这些。​​Compression​​:ASTC 6x6(移动端)或DXT5(PC)​​Compression​​:BC5(PC)或ASTC 6x6(移动端)

sky_smile_Allen的博客 2171

Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown

Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column 'hx_user' in 'field list'

四季轮换叶,一路招摇胜 1万+

HBuilderX远程开发环境配置:Windows SSH连接实操

详细介绍如何在Windows系统中通过SSH连接远程服务器,配置HBuilderX进行高效远程开发,提升编码协作效率。全程实操演示,轻松掌握hbuilderx与远程环境的无缝对接。

weixin_35751194的博客 1192

解决 ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

解决 ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown column ‘root’ in ‘where clause’ 最近在测试mybatis的**${}** 传参时的sql注入问题时,遇到了这个bug,记录一下,本人感到非常奇怪。 具体报错: Exception in thread “main” org.apache.ibatis.excepti

weixin_46202290的博客 1万+

计算机考研复试面试常问问题 数据结构篇(下)

计算机考研复试面试常问问题 数据结构篇(下) 使用前需知(拒绝白嫖,如果对你有帮助,你只需点个赞就行): 注意:有人在闲鱼上盗卖我的资料,而且还有很多同学买了,请各位擦亮双眼,我是整理出来免费分享给大家的! 大家请多点赞和评论,这样后面的同学更容易百度到,不至于被人盗卖,我就不加水印影响大家使用了! 第一次整理,度不好控制,有不好的地方希望大家理解,后面可能会改进,造福今年之后的同学们! ...

程序员宝藏的博客 1万+

RLHF的数学表示

RLHF(Reinforcement Learning with Human Feedback)是一种结合了强化学习和人类反馈的机器学习方法。它通常用于训练智能体(agent)在复杂环境中做出决策,同时利用人类的反馈来指导和改进学习过程。RLHF 没有一个统一的数学表示式,因为它依赖于具体的应用场景和实现细节。然而,我们可以从强化学习和人类反馈的角度来描述RLHF的一些关键数学概念。

xw555666的博客 687

### Error querying database. Cause com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server

cxywangshun的博客 4148

Windows 10下Gpg4win 4.3.1安装与配置全攻略:从下载到邮件加密实战

本文详细介绍了在Windows 10系统下安装和配置Gpg4win 4.3.1的全过程,包括下载、验证、自定义安装以及密钥管理。特别重点讲解了如何通过Kleopatra证书管理器进行密钥创建和管理,以及在Outlook中实现邮件加密的实战操作,帮助用户全面提升数据安全防护能力。

weixin_29271263的博客 301

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException最全解决

org.springframework.jdbc.BadSqlGrammarException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manua...

混子 2万+

MIPI video mode 和 command mode 的区别

1、何为LCD RAM? LCD 是指字面意思是液晶显示屏(Liquid Crystal Display), 而RAM: 随机存取存储器(Random-Access Memory),两者完全是风马牛不相及的东西。 下图是一个标准的LCD的爆炸图(不含TP),请注意图中红色mark的地方:控制IC-- LCD的大脑。所谓的LCD RAM自然是指此大脑是否包含RAM. 题外话<不感兴趣的...

精诚所至 4690

《python算法与数据结构2000讲》算法与数据结构总结

《python算法与数据结构2000讲》算法与数据结构总结

IT 甄选推荐 1103

解决MySQL报错Error querying database.Cause com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException.

项目测试环节,jdbc连接过程where子句出现报错问题收录解决。

2393

五、实战pxe安装ubuntu 22.04 软raid1(实际生产pxe配置)

这段配置文件是一个cloud-init的自动安装配置,用于自动化部署Ubuntu服务器操作系统。它定义了从系统身份、键盘布局、区域设置到磁盘分区和RAID配置的一系列设置,并且包含了在安装过程的最后阶段执行的一些命令。基础设置version: 1指定了autoinstall配置文件的版本。source定义了安装源,这里是ubuntu-server。identity设置了主机名(hostname)、用户(username)和密码(password注意这里的密码是经过加密的。键盘与语言设置。

jundao1997的专栏 999

mysql升级版本后正常执行的sql报错:Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

业务场景是这样的:本地测试接口时用的本地mysql数据库是低版本的5.1.55-community,没有问题。但是上到测试环境后,执行同样的接口请求,却报了sql异常。测试环境的mysql库是1.8高版本的,感觉问题出在版本上。加上本地测试没问题,可以肯定是数据库的问题。剩下的就是排查数据库哪方面的问题了。 报错信息如下; Error querying database. Cause: com....

万米高空的博客 4529

win10 跳过U8环境检测的IE WebControls.rar

win10 安装u8的时候 提示IE WebControls 不通过,这个工具可以欺骗u8的检查。 跳过U8环境检测的IE WebControls。提示导入失败后,重新检测通过。

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")

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException

1.问题描述: ### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure The last packet successfully received from the server was 170,369 mi

我爱编程持之以恒 4万+

STM32F407中文手册

STM32f407中文手册 本参考手册面向应用开发人员,提供有关使用 STM32F405xx/07xx、STM32F415xx/17xx、 STM32F42xxx 和 STM32F43xxx 微控制器存储器与外设的完整信息。STM32F405xx/07xx、STM32F415xx/17xx、STM32F42xxx 和 STM32F43xxx 构成一个微 控制器系列,各产品具有不同的存储器大小、封装和外设。有关订购信息以及器件的机械与电气特性,请参见数据手册。有关 ARM Cortex™-M4F 内核的信息,请参见《Cortex™-M4F 技术参考手册》。

简单解决 Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

简单解决 Error updating database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near '表名

孤er尽悲欢绝的博客 8498

SAP B1中文培訓教材_SDK

公司内部培训资料,对开发工具 ,DIAPI, UIAPI,Add-ON有详细解说

Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.Communicatio

一、在MyBatis连接数据库时控制台报错: org.apache.ibatis.exceptions.PersistenceException:### Error querying database. Cause com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure 二、解决方法: 在mysql中的连接字符串url中加入useSSL=false即可。 出错的源代码为: ...

m0_50958694的博客 4947

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException:

** 报错结果 ** org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server vers

穹妹纸的博客 3509

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

org.apache.ibatis.exceptions.PersistenceException: ### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL syntax; check the manu...

qq_40181435的博客 3652

动态sql以及Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException

1.数据库表: CREATE TABLE blog( id VARCHAR(50) NOT NULL COMMENT '博客id', title VARCHAR(100) NOT NULL COMMENT '博客标题', author VARCHAR(30) NOT NULL COMMENT '博客作者', create_time DATETIME NOT NULL COMMENT '创建时间', views INT(30) NOT NULL COMMENT '浏览量' ) ENGINE=INNODB D

syq1791899128的博客 3801

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unkn

### Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: Unknown database 'mybatis'

qq_55977139的博客 2231

事务超时导致,com.mysql.jdbc.exceptions.MySQLTimeoutException: Statement cancelled due to timeout or client

由于一定定时任务导致出现的异常信息(部分): ###Errorqueryingdatabase.Cause:com.mysql.jdbc.exceptions.MySQLTimeoutException:Statementcancelledduetotimeoutorclientrequest 原因是由于执行业务超出了配置的事务超时时间 由于在代码中配置了超时...

u011186019的专栏 9063

解决Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communica

因为教程老师不同,所以在用Spring整合MyBatis时,运行一直出现连接Mysql错误。

stevence112的博客 2134

com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException报错解决方法

今天学习Mybatis时,碰到com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException,详细错误如下

名字被人抢注了 1万+

Mybatis报错Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException的解决

Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communicat mybatis程序报错如下: org.apache.ibatis.exceptions.PersistenceException: Error querying database. Cause: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:

weixin_45898928的博客 2290

Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException: You have an error in your SQL synt

这种错误一般都是sql语句编写错误导致了,可以把sql放到数据库里单独执行下看下能不能执行。我这个错误是因为我把 “DATE”写成了“DATA”导致的。

q1042644419的博客 2198
上一篇: FAQ(40):org.springframework.jdbc.BadSqlGrammarException: ### Error updating database. Cause: com.m
下一篇: FAQ(42):org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'bill
后台技术汇
博客等级 码龄11年 670粉丝 531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
 
 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

打赏作者

后台技术汇

对你的帮助,是对我的最好鼓励。

¥1 ¥2 ¥4 ¥6 ¥10 ¥20
扫码支付:¥1
获取中
扫码支付

您的余额不足,请更换扫码支付或充值

打赏作者

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