Batch data is written into the data table, and a progress bar is displayed on the WEB side.

I want to send a group message. The number of members is too large and adding data is too slow. I want to make a progress bar.

A板命郎 2018-01-24 16:35:10 0  2  1493

Index - Ask about joint query of large data volume in Mysql

Now there is table A, which stores the core and busiest data of the entire business line. The approximate amount of online data is assumed to be 1 billion. Almost all concurrency is related to this table. For recent business needs, I want to add a field and found out The impact is too great and cann...

滿天的星座 2017-05-18 10:56:39 0  1  655

I'm curious, and I'd like to ask someone to help me. How should I design the order data table for a large shopping volume website like Taobao?

Sorry, I have never done a large website, and I am still not very proficient in databases. If there are hundreds of billions of data in the shopping table, what should be the appropriate value for the primary key id? But since Taobao has developed so far, how has so much Taobao order data been store...

何惜一博 2019-03-29 17:53:28 0  2  1499

mysql - tens of millions of data paging, when the offset turns out to be larger, how to optimize the speed?

Taking mysql as an example, when the amount of data is generally large, the offset will be larger when paging, and the query efficiency will be lower. For example, if a post has 2 million comments, and 10 are displayed on each page, there will be 200,000 pages. When How to process the data if we tak...

伊谢尔伦 2017-05-18 10:48:01 0  2  854

Assign data to PHP variables

I want to get the data of two variables using the same method but nothing happens functiondisplay(){$datas=Req::all();$products=Product::all();returnview('products.dispaly')->with ('products',$products,'datas',$datas);}Here I want to get the data from the table and assign them to two separate var...

P粉256487077 2023-09-05 13:12:09 0  1  479

python - sqlalchemy batch inserted data, data columns are not equal

{Code...} If the keys of all dictionaries in the batch insertion data are consistent, the data can be saved. As long as one key is missing from the dictionary in the List, the entire column will be ignored. In the real situation, there are many columns and there is a lot of missing data. Is there an...

伊谢尔伦 2017-06-14 10:52:50 0  1  930

What is a good practice for large data volume update queries to avoid lock wait timeouts?

So basically, I currently have this query: UPDATEactASaINNERJOINblokASbONb.fav_pat=a.pat_idSETa.blok_id=b.id It's currently timing out due to the large amount of data I have. Is there a way to avoid timeouts without modifying the database configuration?

P粉842215006 2024-03-29 10:03:38 0  1  390

The traffic between PHP+Mysql website front-end and data server is extremely high

PHP + MYsql front-end and database are separated. Now the communication traffic between the front-end and the database server is very large, and the load on the MYsql database server is too high (up to 398%). The login of front-end users is also very slow. The number of people online at the same tim...

hello 2018-10-21 20:17:20 0  3  1354

Is there a way to add data to a database table in batches in symfony2?

Is there a way to add data to a database table in batches in symfony2? Do you have any knowledge in this area?

某草草 2017-05-16 16:45:00 0  1  421

php - How to split large batches of data?

Hello everyone, there are 10,000 orders in the database, and various calculations need to be performed on the orders every day. The language used is php+mysql. Because so much order data was not considered in the previous design, I used a very conventional method of writing and updating all the data...

女神的闺蜜爱上我 2017-06-24 09:41:39 0  2  960

Using PHPExcel to export data will not work if the data is around 20,000.

PHPExcel is extremely slow to export 20,000 pieces of data, and this page still appears. Could you please tell me how PHPExcel handles massive amounts of data?

* 2020-04-08 18:53:38 1  0  1150

Caching reporting data in the same transaction database vs using a data warehouse

We have a SaaS solution where each tenant has its own MySQL database. Now I'm designing a dashboard for this SaaS system and it requires some analytical charts. To obtain the data required for the chart, we can query each tenant's transaction data in real time from its database. and get updated grap...

P粉511749537 2024-02-26 19:20:23 0  1  361

Use PHPExcel to export data

PHPExcel is extremely slow to export 20,000 pieces of data, and this page still appears. Could you please tell me how PHPExcel handles massive amounts of data?

PHP中文网用户-2010639 2022-10-19 15:09:49 0  0  702

Please give me some advice on how to use thinkphp5.1 to process large amounts of mysql data.

I have a requirement here, local database (one): one table user_local, remote database (two databases, five tables in total). All information is associated with a database (user_data_a) through uid. There is only one table user_basic, which is the basic table for all users. Information, the other fo...

实力单身典范 2019-06-27 15:16:12 0  1  1219

How to increase the number of icons based on data in Vue

I sent an API request and got a different number of participants (from 1 to 5). Based on this number, a corresponding number of icons should be displayed in the modal box. If there are 3 participants, there should be 3 user icons in the modal. I know how to do it in React, but I'm starting to learn ...

P粉832490510 2024-01-10 17:03:43 0  2  377

How does Thinkphp query the database in batches?

1. I have such a requirement: there are 4 kinds of inventory in the warehouse receipt. I want to query whether there is such inventory in the existing table. If there is, increase the quantity. If not, create new data. The where condition is an array. How should I query? 2. where condition {code...}...

天蓬老师 2017-05-27 17:42:03 0  4  625

Is there any way to batch query the contents of the data?

For example, there are 1 million pieces of data in the data. I want to use 1,000 pieces of data to batch query among the 1 million pieces of data to get the content of the 1,000 pieces of data in the 1 million pieces of data.

chen 2022-06-05 16:39:28 0  1  973

Change input quantity step value of simple product based on weight in WooCommerce

I want the quantity selector value to change based on the weight we set in Shipping > Product Weight for a simple product. As shown in the image below, when we set the weight of the product to 0.5 kg, the product quantity selector starts from 0.5 and if we set it to 1 kg, it starts from 1. Finall...

P粉351138462 2023-09-04 21:55:45 0  1  539

php - How to export and import large amounts of data in mysql

Now we have a database here that reaches 10G. We want to export it and import it to other servers. Basic exports can no longer be used, such as mysqldump and navicat exports. Are there any other methods or tools that can export the database and then migrate it to other places?

巴扎黑 2017-05-24 11:30:37 0  9  1019

submit data

How to submit the data in the html form to the server? Do I use external variables? I use POST to pass the value, and the name of the form is the same as in PHP. However, after submitting the data, it shows that the value in the parentheses of my external variable is not defined.

王统帅 2018-09-11 15:00:03 0  2  1485