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 0  1  651

Table `main.Product` does not exist in the current database. How to deploy Prisma database on render.com?

In the last part of my project I can't seem to deploy the prisma database correctly. The website builds successfully and I can view the website, but when I try to access the database it shows the following: Invalid prisma.product.findUnique() call: Table main.Product does not exist in the current da...

P粉151720173 2023-12-21 23:47:25 0  1  544

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  509

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 0  3  872

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  596

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 0  1  518

mysql - Why does database read-write separation improve database performance?

Please see the blog above for why read-write separation can improve database performance. According to database common sense, read-write separation can indeed improve database performance, but you don't know if you understand its underlying principles. For example, one reads and one writes, but the ...

PHPz 2017-05-24 11:34:46 0  2  1325

What about the database behind it?

What about the database at the back? I’m crying, boss.

但行好事 莫问前程 2021-09-29 20:58:02 0  1  915

mysql - schema database design for Q&A website?

I am new to Django and am ready to imitate a simplified segfmentfault website. Now I have a few questions. {Code...} Now in the database area, anti-paradigm database design is recommended. Is this kind of Q&A website suitable for using foreign keys? What fields are missing from my table? These a...

过去多啦不再A梦 2017-06-30 09:53:50 0  1  1016

tp5 can connect to the sql server database, but the data submitted by the form cannot be written to the database. What's going on?

tp5 can connect to the sql server database, but the data submitted by the form cannot be written to the database; but it can be replaced with a MySQL database.

孙博 2018-04-09 15:28:53 0  1  1242

Problems with PHP storage database efficiency

Program 1: for($i=0;$<100;$++){Connect to the database; execute select to advance a value; disconnect from the database; connect to the database; execute updata once to store data; disconnect from the database;} Program execution It takes about 1.5-2 seconds. Program 2: Connect to the database; f...

八哥 2023-09-22 22:46:18 0  0  897

How to store the analyzed dictionary data in the database in Python 3.5

{Code...} I am using the database linked by pymysql. The statistical data before was a single row, so I used this {Code...} Now it is multi-row. How do I save it to the database? The database has two fields, respectively. It is keywords, and count, which correspond to the contents in the dictionary ...

ringa_lee 2017-05-18 10:59:27 0  2  753

Questions about database

1. The teacher said to create a new table student in myblog. Why is it the database myblog? 2. How does the student table connect with the zhibo/3 project? How does this project know which database or data table is for him to use?

益伦 2017-09-25 21:53:02 0  2  1486

Best way to create database from external source

I'm creating an API, assuming my database has authors and books tables. The authors and books come from an external service API and they have their own id on that external service (I need to track it for future external calls). Which scenario is best for my database? ScenarioAauthors-id(PKautoincrem...

P粉949190972 2024-02-17 22:14:03 0  1  400

Reasons for Chinese garbled characters in MySQL database

This is the statement for creating a table in my database. This is the garbled picture of my database query. What is the reason?

阿神 2017-05-18 10:54:52 0  7  849

javascript - Use nodejs to transfer database data to the front desk. There is data in the database and the connection is successful, but why is an empty array obtained?

1.api.js 2.db.js 3.vue 4. Database The result is: The result obtained is an empty array, but the link and the database are both correct. Why is this? ? ?

ringa_lee 2017-06-05 11:08:50 0  4  1191

SQL query results are 0 when the string in the database row has a special font

I'm running this query: SELECTidFROMpostsWHEREtitleLIKE '%CERTIFIEDINSTALLER%'; The text in the database is stored as 'ᴄᴇʀᴛɪꜰɪᴇᴅɪɴꜱᴛᴀʟʟᴇʀꜱ' which is a unique font. The above query returns 0 results, but when I change the 'ᴄᴇʀᴛɪꜰɪᴇᴅɪɴꜱᴛᴀʟʟᴇʀꜱ' text font in the database to something like a sans serif ...

P粉029327711 2023-09-11 16:04:04 0  1  604

python - After the 5.11 operation in the Flask Web Development book, only the database was migrated. Why was the database data not migrated?

Only the database was migrated, but the contents of the database were not migrated.

阿神 2017-05-18 10:52:26 0  1  615

Data obtained from blob field in database

The data obtained from the blob field in the database is data, {7920b7e8 1743de9c afdd9cd9 90ccf3d3 79d916ec 69d80278 72fd3495 cdb4e19c 0f813a57 dded5db4 f1907cd7 996d14be 9d090f3d b 4ce1020 142ab0b8 1e571111 6f02f840 ...

ringa_lee 2017-05-16 13:19:31 0  2  1124

Method to display database data: use console.log(req)

I ran console.log(req); to see the contents and found that the data from the database was displayed along with the session data sessionStore:MySQLStore{...options:{host:'localhost',user:'root', password:'1324',database:'dbso',endConnectionOnClose:true,clearExpired:true,checkEx

P粉396248578 2023-08-31 08:47:42 0  2  495