Asksearch_php.cn

Community Learn Tools Library Leisure

English

Popular searches：
PHP
MySQL
jquery
HTML
CSS

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

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

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

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

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

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

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

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

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

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

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

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

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

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

MYSQL query to copy all data in a column from one database to another

I accidentally used the "Generate Description" feature on the Opencart SEO tool and it overwrote all of my product descriptions with the product title. I have over 600 products and it would be a pain to remake them all. I have a MYSQL backup from 2 months ago that contains most of the prod...

P粉005417748 2024-04-01 00:00:37

javascript - When clicking the "Reply" button, will multiple pieces of data be inserted when clicking "Reply" for the second time?

Online function demonstration address (mobile phone): http://bbs2.valueonline.cn/we... Complete project code download: http://pan.baidu.com/s/1bpDznhP Click the following button to reply for the second time Multiple pieces of data will be inserted, please give me some advice on why? Main js code {co...

过去多啦不再A梦 2017-05-19 10:41:22

Manually copy a MySQL 5.5 database to another computer

The product my company uses uses MySQL5.5 as the backend database. The product automatically installs and configures MySQL during the installation process. The product can be configured to operate in a hot standby redundant configuration. In these cases, perform the same installation process on 2 se...

P粉588152636 2023-09-05 00:16:59

Perform insert into database to catch duplicate key errors

My application may insert duplicate primary key data, my doubt is what is the most efficient way, to check if the key already exists before inserting, or to just insert and let the bank return an error and then handle it? Which one has less impact? Thanks

P粉920835423 2024-03-28 08:58:51

Ajax submission background no data. I followed the teacher's code and read it several times, but no problem was found.

ajax submission background no data I followed the teacher’s code and read it several times, but no problem was found

2018-11-26 11:28:24

SQL processing to clean and sum duplicate data in joined tables

I'm pulling reports from an accounting system. The system has a nasty habit of putting duplicates in the database, which it handles internally (instead of cleaning them up in the first place!) Take the totals table for invoice 125 as an example: +----- -------+-----------+----------+|invoice_id|code...

P粉354948724 2023-09-13 15:15:50