php - How should the title table and points rule table be designed?

For example, the first-level title ['Skilled Craftsman'] needs to reach the merit value XX, and the second-level title ['Skilled Worker'] needs to reach the merit value XX... After the fifth level, each time you advance to one level, you need 5 times the merit of the previous level [rules] Table] Ho...

迷茫 2017-05-19 10:07:32 0  1  736

php - How to write mysql to set the field sales to numeric quantity when it is null, otherwise set sales to the original sales+quantity?

There is an int type field sales in the item table. How to use SQL to update the sales volume? When the sales field is null, set it to the numerical quantity. Otherwise, set sales to the original sales+quantity?

为情所困 2017-05-16 13:00:43 0  1  451

mysql - database table structure design

Describe the requirements: Now we need to design the database table structure. There are many types of rules. How to design tables to store these rules. Each rule has common attributes and different attributes. Currently, I think of two methods: the first is through foreign keys (common attributes o...

習慣沉默 2017-06-30 09:55:23 0  3  1091

laravel eloquent implementation principle

laravel eloquent implementation principle

滿天的星座 2017-05-16 16:56:22 0  4  779

Tailwind CSS: Crafting Navigation Design

I'm new to CSS and VueJs so I'm creating a tab panel design + functionality Currently I'm using the tailwindCSS plugin The design I want is like this: Current: CodePen I can't replicate this wish because I'm missing the : between elements of spaces: I tried using flexspace-x-10 or gridgrid-gap-20 bu...

P粉515066518 2024-02-26 16:48:59 0  1  394

nginx - Regular match for userAgent in native safari?

I want to analyze the number of visits from iOS native browsers in nginx logs. However, many browsers now contain Safari strings in their useragent information. Is there any regular expression that can match native Safari?

PHPz 2017-05-16 17:16:27 0  1  592

python - Problems with personal blog database design

I need to design a personal blog and have encountered difficulties in database design. The function I want to implement is: ordinary users can only comment on blogs. The administrator (that's me) can log in, post blogs, and reply to comments. The original design was for tables with User, Admin, Post...

typecho 2017-06-28 09:23:13 0  3  889

Common design patterns in java

Recently I want to study design patterns, but there are quite a few design patterns. I would like to ask what are the commonly used design patterns?

仅有的幸福 2017-05-27 17:41:16 0  8  959

javascript - The object has attributes with set and get methods set in the prototype chain. This attribute will also be automatically written into the object.

1: If the set and get method attributes are set in the prototype chain of an object, the object will automatically write this attribute. 2: The code is as follows {code...} 3: View o in the console 4: Why o object Also has a attribute?

世界只因有你 2017-06-28 09:26:57 0  1  878

When placing orders in the mall, do you design one table or two tables?

When placing orders in the mall, do you design one table or two tables? For example: Should we design wp_order and wp_order_goods tables, or only one wp_order_goods table?

骄阳似火 2020-08-21 09:28:09 0  0  1264

javascript - css design patterns

I would like to ask the master, what are the commonly used design patterns in CSS design, and what are the characteristics of each?

伊谢尔伦 2017-05-19 10:26:45 0  9  672

In programming, what are some good habits worth sticking to from the beginning?

In actual programming, what are some good habits that we should learn and persist from the beginning? "Standardize your own code, have less personal style, and add necessary comments" This is the principle that I have always adhered to during the coding process. What are some good habits y...

z老师 2019-02-13 13:14:31 2  7  2890

php programmer toolbox login problem

The PHP Programmer Toolbox is installed, but a network connection error occurs when logging in. Please check the network for problems. The reason has never been found. I hope God can help me

IT-小爬虫 2017-09-07 15:13:21 0  1  1658

Product specification sheet design

I would like to ask the masters: I want to design a product-related table now, which involves multiple specifications and multi-specification values. How should I design the table and how many tables should I have?

A峰 2019-12-06 18:34:33 0  2  1495

Design a database table structure that meets the following business requirements?

I was stumped by the last question in today's interview: (original picture) Design a database table structure that meets the following business needs: 1. A certain merchant holds a lottery for playing games for a period of time. Only users who play the game with 50 points or more can win the lottery...

phpcn_u36412 2018-03-14 23:00:16 0  1  1317

WordPress rewrite rule setup guide

How to set up a rewrite rule in WordPress to handle the following URL: "https://mywebsite.com/product-detail/model=MH-TOOL-152&isToolId=1" This is the redirect link after scanning the QR code. I should get the value of the parameter model as this is the basis of the product SKU and put...

P粉496886646 2024-01-10 17:48:51 0  1  475

How to completely transfer the PHP programmer toolbox to the D drive?

I have restored the C drive of my computer. Every time I restart and log in to the PHP Programmer Toolbox, I have to reinstall it and the configuration is lost. It is very troublesome. Please explain how to save the PHP Programmer Toolbox program and all configurations to D. I also tried installing ...

phpcn_u19250 2017-08-28 13:01:21 0  1  1333

请教:mongodb帖子类表设计

1.帖子有内容有回复，如果在mongodb里只用1个表的话，可以设计成这样 {代码...} 这样的设计的话，如何修改 user:456 里的content? {代码...}

天蓬老师 2017-05-02 09:21:46 0  1  605

Sorry, please set short_open_tag in php.ini to On, otherwise the installation cannot continue. ?

Sorry, please set short_open_tag in php.ini to On, otherwise the installation cannot continue. Where can I set this? Thanks

中 2018-04-18 00:24:12 0  1  893

mysql - How does a postgreSQL database set the default collation of a table's fields?

I now create a new table with a date field. When all rows of data are displayed, the sorting rules can be changed through the sort filter button settings, but when I close the window and reopen it, the display is messed up again. How to solve it?

怪我咯 2017-05-17 10:01:37 0  1  945