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Create backups of MySQL databases and servers

I understand MySQL database backup, but how to backup the entire MySql configuration and database? I'm building a few sets of services/tools and I need to provide instructions so that less technical people can restore them in my absence. One of the things I need to back up is self-hosted MySql. Can ...

P粉506963842 2024-03-20 11:11:09

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

php - Multiple mysql connections to process different databases?

How to implement multiple mysql connections to process different databases? Won't they interfere with each other? !

高洛峰 2017-06-17 09:15:19

SMProxy, a MySQL database connection pool developed by Swoole based on the MySQL protocol.

SMProxySwoole MySQL Proxy is a MySQL database connection pool developed by Swoole based on the MySQL protocol. The principle is to store the database connection as an object in the memory. When the user needs to access the database, the connection will be established for the first time. Later, inste...

子山 2019-01-29 14:50:17

How to run a SQL file containing multiple databases (schema) from Mysql shell?

I use MysqlWorkbench to export multiple schemas into a 2GB sql file. Now, I want to import it. The problem is that in the examples I've seen so far, the command is for each schema: mysql -h hostname -u userdatabase <path/to/test.sql My file contains many tables from multiple schemas . How does it...

P粉194541072 2024-03-29 10:04:36

Backup of PostgreSQL database design - no data

I'm trying to find a way to backup my database design without including the data stored in the database. Actually, one might say I want a file containing all "CREATEScripts" in the database. Ideally, this file can be used to recreate the database (without the data of course). How to avoid ...

P粉098417223 2023-08-24 14:29:36

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

How to synchronize development and production databases

Do you know of any application that synchronizes two databases - during development sometimes you need to add a table row or two or a new table or column. Normally I write each sql statement to some file and execute the lines on my production database during the upload path (backing it up before). I...

P粉520204081 2023-10-22 23:37:30

Updates to multiple databases - mysql

I'm new to mysql. I have a list of 10 databases containing the same table structure. The same table needs to be updated for each database. Is there an option to do it through phpmyadmin without selecting each database? Or is there a function similar to: USELIKEgc%?

P粉129731808 2023-08-27 11:15:21

Will migrate BLOB fields in MySQL table to BLOB fields in SQLite table

I have a table in database mysql containing one column of type BLOB. I want to export to sqlite database with similar structure but in sqlite database the target table throws too long bytes error In database mysql the column BLOB belongs to an image I need help please

P粉585541766 2024-04-01 11:14:54

php - Wordpress mysql data recovery problem, novice please help!

1. My WordPress website could not be opened. At that time, I could not use the WordPress plug-in to back up the data into sql format, so I had to back up all the mysql folder and theme plug-ins. 2. After reinstalling WordPress, I created a database with the same name as before, table prefix, account...

阿神 2017-07-07 10:35:20

Database design - MySQL database integration of two systems

1. There are currently systems A and B, and B is the upgraded system of A; 2. The structure of most database tables in the two versions of the system mysql database is the same, and the data of A can be directly integrated into another system B; but there is still Some tables have different structur...

巴扎黑 2017-05-18 10:54:00

How to get the highest value, lowest value and average value in mysql in php

There are two fields in database table A, one is the category, and the other is the price. How to calculate the highest value, lowest value, and average price of No. 11 in the category in PHP? One category corresponds to N pieces of price data, such as 11, 1002, 12011, 10111, 10111, 5511, 995, 882, ...

给我你的怀抱 2017-05-18 10:51:53

Rewrite the title as: How to convert data type of "unnamed 0" column of pandas dataframe from int64 to string or object

I'm working on a small project trying to send a dataframe from pandas to a mysql database. My dataframe contains default unnamed columns and I want to send it to mysql server. My sql schema contains an id column of varchar(255) data type. createtableusers_sample(idvarchar(255)NOTNULLPRIMARYKEY,#othe...

P粉536532781 2023-09-04 20:00:13

How to switch different versions of mysql database in wamp settings

How do I switch between different versions of mysql database in wamp settings? There is only one 5.7.14 in my wamp. The project database sql file given to me by the company is of a lower version. The technical side said that I can import it by changing to a lower version of the database, but I don’t...

李佳羽 2018-07-19 18:17:24

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

mysql - How to make the sql of the java project compatible with the sql syntax of multiple databases?

How can SQL statements in Java projects be compatible with multiple databases? The project belongs to the product category and it is not confirmed which database the user uses. We use db2 during development, but if we encounter an oracle database, sql will fail. I don't know how to achieve compatibi...

PHPz 2017-05-18 10:45:51

phpsstudy upgrade procedure is not done well. Upgrade fails every time

Every upgrade is unsuccessful. It takes a lot of time to deal with upgrade issues. For example, there is no backup when upgrading the database and there is no backup when upgrading the site configuration. The upgrade procedure was not done properly. It’s really a trap. It's better not to upgrade. I ...

2 2018-11-22 10:06:17

python - How to write a script to clear a certain row of test data in the database

I just need to write a script. The database has a mobile phone number for testing. After registration, there will be a lot of related data in the database. Then the script needs to be able to clear these data or set them to null. This is a similar script. How should I modify from future import print...

阿神 2017-05-18 10:50:07

JDBC datetime type

I have a DATETIME column in a MySQL database. I use ResultSet metadata to retrieve the column type and it returns TIMESTAMP which is incorrect. How can I get the correct java.sql.SQLType value for this column? I'll try to be more specific. I define the structure of the database in Java code. For exa...

P粉486138196 2023-12-27 20:52:41