Restore data - only the mysql data directory remains How to restore innodb data

I have newly installed mysql and used the previous directory. After opening it, I only see the table but no data. How can I restore it?

天蓬老师 2017-05-18 10:49:53 0  1  632

How to resume database migration

I have a mysql database but I can't delete it. I'm missing my migration files in an asp.net project and I made some changes in the dbcontext file. When I try to create a new migration and update the database, it shows that table 'aspnetroles' already exists. what do I do? How to revert migration or ...

P粉418214279 2023-09-09 00:36:28 0  1  590

In MySQL database, how to copy one database to another database

A test environment database and a development environment database; the test environment database has been modified, but now the modified data needs to be restored to the original data, so how to copy the development environment database to the test environment database

P粉582593074 2023-08-10 10:34:20 0  0  503

concurrency - Java concurrently processes a large amount of data in a table, how to set checkpoints so that they can be used for failure recovery instead of repeatedly processing the processed data?

Java concurrently processes a large amount of data in a table. How to set checkpoints for failure recovery instead of repeatedly processing the processed data? For example, if the system crashes during processing, and before kill -9 is used to force the kill, set a checkpoint and resume processing f...

滿天的星座 2017-05-17 10:08:26 0  1  711

javascript - Duplicate data obtained by ajax

A row of data is displayed twice. The data has been obtained. Why is it displayed repeatedly //Request {code...}

伊谢尔伦 2017-05-19 10:24:53 0  2  753

javascript - How to avoid duplication with data in the library when inserting data in mysql?

How to avoid duplication of already inserted data when inserting data into a mysql database table? What should I do? Please advise, thank you!

给我你的怀抱 2017-05-24 11:33:09 0  3  718

How to get the id of all checked checkbox data from datatable in php jquery

I am using checkboxes in all rows so that when each checkbox is checked I get their Id, everything is working fine with what I have implemented but the problem is that I only get the specific ones that have been checked The page of the Id data table. Meaning if I check the checkbox for one data from...

P粉741223880 2023-08-28 13:21:03 0  2  505

Copy activities from a MySQL view with parameters to Azure SQL Database using Azure Data Factory

I'm trying to use Azure Data Factory to copy a MySQL view with parameters to an AzureSQL database. Here is the query to copy the activity: SET@dDebut=20220201;SET@dFin=20220228;selectvue_movements_of_month_with_param.*from(select@dDebut,@dFin)param,vue_movements_of_month_with_paramLIMI

P粉306523969 2024-03-31 20:56:52 0  1  399

php data acquisition?

php data acquisition? php data acquisition? php data acquisition?

Mr.V 2017-07-27 21:56:28 0  4  2244

When using laravel, the problem of saving checkboxes to the database

When using laravel, there is a problem with saving checkboxes to the database. This is the demo of html: https://jsfiddle.net/4j3hoyvn/ Question: How to save the checkbox (checkbox) in the form in the database? Create a separate table? The effect to be achieved: When the "Edit Page" is ope...

滿天的星座 2017-05-16 16:51:04 0  1  531

SQL Inner Join Performance Data Duplication

table-->qtqstnId tag id1112232422 table-->question qid12 qid primary key, qstnId is Fk now when i run the query-->mysql>selecttagIdfromqtinnerjoinquestiononqt.qstnId=1; it comes back; tag id2121 my question is why am i here Get duplicate data.

P粉253518620 2024-03-30 09:17:19 0  1  491

How to determine if there are duplicate values ​​in an array written to the database

There are many identical arrays name=user[],name=qian[],name=duo[].name=user[],name=qian[],name=duo[]name=user[],name=qian [],name=duo[]1. How to obtain the backend? 2. How does the backend determine that the same value exists in the database and prompts for duplication.

依然是小超 2020-05-31 01:46:29 0  1  903

Mysql database is in use. How can it be repaired?

The database has been used in this way. There are many methods on the Internet that do not work. It has its own repair function. 1033ERRO appears. Please ask for help. Thank you.

2018 2018-08-08 11:07:58 0  2  1129

MySQL deduplication, why can only a few hundred or dozens of duplicate data be removed each time, when there are obviously hundreds of thousands of duplicate data?

Requirement: Delete the items with the same primaryid and drugname in DRUG, and keep the smallest row of drug_seq. Question: MySQL uses these methods to remove duplicates. Why can it only remove hundreds or dozens of duplicate data each time? It is like squeezing out toothpaste. Execute it and remov...

P粉029305743 2022-09-05 14:49:26 0  0  826

Missing newline characters while getting data from PostgreSQL database using PHP

Title: Missing newline characters when getting data from PostgreSQL database using PHP Text: When I use PHP to get data from a PostgreSQL database, I encountered a problem. I use Navicat to view the data in the database, and I can obviously see the newlines (\n) in the data.

P粉696146205 2023-08-06 13:44:42 0  1  663

Restore table structure from frm and ibd files

I'm trying to restore the database in the PMA but can only access the frm and ibd files - not the ib_log file which I understand you need. I know that I may not be able to recover the database data, but is it possible to recover the structure of the table from the frm file?

P粉637866931 2023-10-19 10:01:37 0  2  752

PHP delimited random number, non-repeating

I have the following php code which creates random numbers when adding a static number; 100 and divides the number with |. It works fine but creates duplicate numbers, how do I make it prevent duplicate numbers from being created? echoshd is 3;100|2;100, but there are no repeated numbers before ;100...

P粉131455722 2023-09-06 20:26:26 0  2  597

PHP wants to use queues to export very large data from the database and download it. How to achieve this?

Using PHP, there are millions of data in the database, but it cannot be found directly. It also requires complex calculations and exporting after calculation. So I want to use queues to solve this problem, or there are other ideas. And you can use ajax to monitor queue execution. Note: It doesn’t ha...

阿神 2017-05-24 11:34:20 0  3  856

What is the default database name prefix in the php toolbox?

What is the default database name prefix in the php toolbox or where to view it. The following is the copied content information database name: root Which database should WordPress be installed to? Username: root Your MySQL username Password root...and its password Database host: 127.0.0.1 If localh...

彭离元 2019-07-08 02:23:41 0  1  1198

How to use php+mysql to make dynamic data tables, urgent! ! !

How to use php+mysql to make dynamic data tables, urgent! ! ! How to use php+mysql to make dynamic data tables, urgent! ! ! How to use php+mysql to make dynamic data tables, urgent! ! ! How to use php+mysql to make dynamic data tables, urgent! ! ! How to use php+mysql to make dynamic data tables, ur...

joer 2021-05-12 02:06:09 0  4  1235