1 the result is that true, is tested after using where true all conditions are null the first condition is null all are not null can get the right result, and where 1 can get the right result. After google, it is found that no one has done so....
The key code of DriverManager-sharpgetConnection is as follows. Its logic is to loop all the driver, registered through SPI to set up connection, one by one to see which one can be established successfully and return directly . for(DriverInfo aD...
as shown below, use ant.jar to connect to the oracle database and execute the sql script, but if my sql script takes in parameters (for example, through sqlplus: sqlplus user password@db @ test.sql A B C ), it seems that script parameters are not suppo...
try { connection.setAutoCommit(false); bankDao.transferMoney(+2000, 1, connection); 1 2000 if(true){ throw new RuntimeException(); } bankDao.transferMoney(-2000, 2, connection); 2 2000 ...
the Jenkins run integration test reported an error and the local test passed. The database script is up to date. Log in to docker to see the latest table . Error Message Could not open JPA EntityManager for transaction; nested exception is org.hibernate...
logstash configuration: output { elasticsearch { hosts => ["192.168.8.8:9200"] index => "jdbc_index" document_id => "%{id}" } stdout { codec => json_lines } } it is confi...
using JDBCDataSouce is normal, startup and stop are normal, and no error is reported. when switching to C3P0 configuration in C3P0 XML: <!-- --> <bean id="dataSource_c3p0_properties" class="com.mchange.v2.c3p0.ComboPooledD...
when writing spring mvc using idea and maven, configuring jdbc to run later indicates that jdbcTemplate cannot be found. error prompt: 2018-04-11 22:37:07.936 WARN 10096 --- [ main] ConfigServletWebServerApplicationContext : Exception enco...
as shown below, I use jdbc to create a MySQL trigger, which is successfully created in navicat. After the sql2 is output, it runs successfully in navicat. However, when the program runs, it will prompt that there is a syntax error in the statement that ...
The font folder is placed in src and packaged through webpack. After packaging through , font is placed under the dist folder, but the reference address is not the same as the packaged address. There is an extra css path in front actually it is OK to...
1, is a library that can display the percentage size of each resource file in the project in an intuitive square size in the browser. 2. It appears almost like this ...
beginner to learn node, I think the process of puppeteer crawling shows how to achieve it on the web page. Ask the Great God to give me an idea ...
$coinbasePublicAPI = https: api.coinmarketcap.com. ;$coinData = file_get_contents ($coinbasePublicAPI); var_dump ($coinData); Why is the result NULL empty ) original: https: stackoverflow.com que. is it that the person who asked the questio...
this code controls the scroll wheel to scroll down until the entire page is loaded I have a little question about the code browser.execute_script (js1) > = old_scroll_height: . should I not take the equal sign here, or it will become an endless l...