there is such a requirement: user login module, does not support the choice of login method, only a text input box, while supporting: QQ number, mobile number, e-mail, nickname, ID card, etc. (if the user filled in the values of these five fields) any f...
I wrote a sh script on linux. When I used the command to execute the script, the execution was successful. A normal sql file is generated in the path I wrote. mysql account password is in the configuration file. script content: -sharp! bin bash mys...
I use a cloud server, the website access speed is very fast, and the ping value is basically below 100ms, which is a machine from Jinan, Shandong Province. but the response time for posting or replying posts is very slow, at least 10s. After clicking on...
Tencent s qq generally consumes points when fighting landlords. His qq coins are usually stored in memory. in addition, he also has recharged qq coins, if stored in memory, how to ensure that after each successful recharge, the currency of memory will ...
system environment: mysql8.0.11 installed by centos7x64 via yum etc my.cnf ...
python3.6+pymysql+mysql8.0 you can log in normally with your root account in terminal, as shown in the following figure pymysql it s not okay to create a new user, but you can log in normally in terminal. preliminary judgment is still a proble...
Table 1 fields are as follows 2 3 1event_description_description_id2id1cel_order_item_order_item_id3id 123idnull id ask the boss for advice ...
Today, we encountered a strange problem. For the same batch insertion, one can be inserted successfully in batch, but the other cannot be inserted successfully. Please take a look at it. the following is pseudo code -- A (SQL)( SQL ) CREATE PROCEDURE...
I have also seen some posts on the Internet, but there are still some problems in the actual operation. Please take a look at what the problem is. demand is the latest record (add_time) of each item (goods_id) in the query tp_inventory_ log table; the...
first of all, I created a database, called dd in mysal, and then I created a table, called books in it, and then I executed the following command in python, hoping to insert a value in books: < hr > import pymysql conn=pymysql.connect (host= "127....
in fact, there is nothing wrong with my installation, the only problem is that it is different from the example given in the official documents, which makes me think I am wrong. trying to go down is not a big problem. excuse me. the server is the Al...
how does Node.js get the value of the out parameter after executing the mysql stored procedure with the out parameter? I want to get the values of the two parameters _ totalcount,_pagecount, but the return value is not in rows. The code is as follows: ...
problem description: a blog system is being developed that needs to achieve the top of an article, and then the foreground will display the article (or more than one) at the top. What I want is to add a new field to determine whether it is a top article...
when pycharm writes models, there is always something wrong with foreign keys, so I delete one of the tables in the mysql database, and then delete the related class in models, and then there are errors such as 1146, "Table vc_system.df_coinvestors_...
how to realize the if judgment of mysql. There is now a table with two key fields SELECT * FROM house WHERE price= 8500 OR shoufu= 30 I think, when the $price passed in by php is empty, the sql search statement is SELECT * FROM house WHERE s...
Which method of HIbernate is more appropriate to use in the SQL statement select name,sex from db, for example: public T findByID (ID id, I dbName) throws Exception; public List<T> findAll(I dbName) throws Exception; public List<T> findBy...
such as the question: if you want to randomly query multiple pieces of data, which cannot be repeated each time, how to achieve it? ...
some data are like this: 1186486, 0215648, 00064876, mysql stores data to columns of char type, data is stored in front of 0, all columns are killed. How to solve the short ones are preceded by 0, and the data is a string in python and does not ki...
the effect to be obtained is [{ "name ": "aaa ", "id ": "1 ", "sex ", "man "}, { "name ": "bbb ", "id ": "2 ", "sex ", "woman "}, {}.] now the display is { "name ": "aaa ", "id ": "1 ", "sex ", "man "} { "name ": "bbb ", "id ": "2 ...
Longge question post: in HATP scenarios with large data bases, would you use self-increasing id as primary key or UUID? Or what do you suggest? Why? ...
$a = "abc"; $b= "def"; $a = $a^$b; $b = $b^$a; $a = $a^$b; echo $b; abc echo $a; def explain the calculation process, why variables are exchanged ...
import java.util.concurrent.Executor; import java.util.concurrent.ExecutorService; import java.util.concurrent.Executors; public class Start implements Runnable { protected int count = 0; @Override public void run() { while (count &...
I use antd+dva to do a background project. I use the rich text editor react-draft-wysiwyg, but the fonts available by default are all English fonts. How to add commonly used Chinese fonts? trying to write fontFamily like this in a component has no ef...
whether the formId sent by Mini Program template message follows the user, that is, whether the formId generated by user A can be used to send it to user B ...
the project I developed is a multi-page application, and the second html page created cannot be developed in the form of vue single-file components, so the DOM structure is written in the html page, but the relative path is used in html to introduce the ...