Programming VIP

1. Find the most ordered SQL SQL> SELECT HASH_VALUE, SQL_TEXT, SORTS, EXECUTIONS FROM V$SQLAREA ORDER BY SORTS DESC; 2. Find the SQL with the most reads and writes on the disk SQL> SELECT * FROM (SELECT sql_text,disk_reads "total disk" , executions "total exec",disk_reads/executions "disk/exec" FROM v$sql WHERE executions>0 and is_o ...

As mentioned in the previous chapter, the login interface appears. After we input the user name and password, what did odoo do? The developer mode in chrome. See the request as follows The code is as follows # web/controllers/main.py:483 # Login logic, if request.httprequest.method == 'POST': old_uid = request.uid ...

Catalog Analysis on the principle of MyBatis integrating Spring MapperScan's Secret Brief summary If not combined with the Spring framework, a typical way to use MyBatis is as follows: public class UserDaoTest { private SqlSessionFactory sqlSessionFactory; @Before public void setUp() throws Exception{ ClassPathResour ...

1. High availability cluster construction scheme Node A: synchronize messages with node B, node C, so node a, node B, node C can be used as consumer access nodes Node B: as master node, as producer access node and consumer access node Node C: as slave node of slave, as producer access node and consumer access node. When the master node is ...

nginx forbids ip direct access Method 1, ban #If other people visit your website through ip or unknown domain name, you want to disable any valid content, you can return 500 to them server { listen 80 default; server_name _; return 500; } #Open the configuration of one or more real domain nam ...

The basic idea is: 1. When logging in, set session and cookie and a static variable to store the generated sessionId value; 2. Because the session life cycle is over when the browser is closed, we need to use cookie s to access the value of sessionId, and then set the value in the static variable map for later query 3. In the filter, you nee ...

Configure HTTPS certificate records for the official website, the first time Of course, it should be recorded. This is the new official website themis official website Don't talk too much. Get to the point 1) detours After checking the configured nginx root certificate and secret key, https can be accessed normally ├── C ...

1. Introduction of convolutional neural network Convolutional neural network (CNN), the earliest one was in 1860's. biologists found that each visual neuron can only process a small area of visual image, that is, the receptive field. Later, in the 1980s, Japanese scientists put forward the concept of neurocognitron, which can also be regarded a ...

tool Xcode9 iOS 11 New project Here, you don't need to do anything, start the project and you can see a plane. Keywords and key categories Key words: scene view, scene, geometry, node, renderer (all literal translation, self understanding according to class name) Key categories: ARSCNView, SCNScene, SCNGeometry, SCNNode, SCNMate ...

Here is the basic construction: http://www.cnblogs.com/xuyiqing/p/8600888.html Next, we did simple addition, deletion, modification and query: http://www.cnblogs.com/xuyiqing/p/8601506.html   But we found that there were too many duplicate codes Next, integrate and implement DAO development:   1: Original DAO development: package dao; import ...