406 questions
When I tried to create a database with rails db:create, I received the following error:Could not find mysql2-0.5.4 in any of the sourcesRun `bundle install` to install missing gems.Are you going to se...
When I tried to create python and mysql containers using docker and connect python to mysql and display the table in fetchall, the Japanese was garbled.When you enter the mysql container and view it d...
What you want to do in the endI want to display the parent-child hierarchy category in PHPQAfter searching, I found [PHP][Recursive function version] that I tried to register and display categories of...
I can't think of a way to import all the files under the db directory into mysql at once, so please let me know.For my part, I was wondering if I could get the file name list with ls-1db and do well, ...
I am currently studying Javascript using Nodejs.I would like to store the values obtained by executing the query statement in an array, but it will become asynchronous, so it will not store data after...
How do I use CHAR and VARCHAR differently in MySQL 5.7?I understood the following, but is it okay to put fixed length strings in VARCHAR and all VARCHAR?CHAR is a fixed length, so it stores a fixed le...
I am using MySQL installed from Homebrew on my Mac.When I tried to launch MySQL, ERROR!The server quit without updating PID file(/usr/local/var/mysql/****.pid).failed to boot with the boot.For /usr/lo...
Sorry for the rudimentary question.Connection.group(:user_id) causes Object doesn't support #inspect.Ruby 3.1.0Ruby on Rails 6.1.4 modelclass User<ApplicationRecord has_many —connectionsendclass Co...
I plan to develop a multi-tenant service.It is assumed that each user (service user) will have a direct reference to the database of this service from an external system.We want to separate data sourc...
When I try to ETL the data of s3 to rds in embulk, I get a FOREIGN_KEY constraint error.Specifically, the error is as follows:java.lang.RuntimeException: com.mysql.jdbc.exception.jdbc4.MySQLIntegrityC...
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368 winget install-e --id Microsoft.WindowsSDK fails.
368 FileNotFoundError in json: What is the difference between these two?
353 AttributeError at /admin/r/31/4/ 'NoneType' object has no attribute 'startswith'
368 I want to change the format (date and time display) of the legend in chronological order.
362 rails db:create error: Could not find mysql2-0.5.4 in any of the sources
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