sql tag

625 questions

1 answers
466 views
0

I would like to improve the error such as No value present that appears when I update with Spring.

When I change the value to what I want to update on the edit screen and press the execution button, an error such as No value present appears, so I would like to make this improvement.I am thinking of...

java mysql spring spring-boot

2 years ago

1 answers
350 views
0

Understanding SELECT Statements Using Parent and Child Tables

About the image aboveThe parent table is m_productThe child table is t_sales.SELECT m_product.product_code, m_product.product_name, m_product.price, SUM(quantity) as total, SUM(quantity)* price as res...

mysql

2 years ago

1 answers
413 views
0

Unable to input data from seed file to database.

What do you want to doI want to input data from the seed file into the tableproblems and error messages occurringRails db:seed does not allow data inputI ran create on railsc and checked the contents,...

ruby-on-rails mysql

2 years ago

1 answers
375 views
0

Unable to launch MySQL

I'm sorry to disturb you every time.I look forward to working with you again this time.Currently, I deployed Ravel to Sakura VPS and tried to boot it up.SQLSTATE [HY000][2002] Connection refused (SQL:...

mysql centos

2 years ago

1 answers
441 views
0

A like function using asynchronous communication cannot be implemented.

What I want to do is implement a like function using asynchronous communication (on the video posting page)As an overview of the portfolio, we separate pages dedicated to posting videos from pages ded...

javascript ruby-on-rails mysql

2 years ago

1 answers
365 views
0

I want to extract records by specifying a Limit condition for a specific column.

Is it possible to adapt LIMIT to specific columns?As an example, I would like to extract two records with the same id, assuming the following data is available.data for:Desired Results:*If id=3000, th...

mysql sql

2 years ago

1 answers
407 views
0

A logic that uses SQL to link the IDs of the same users of multiple systems and shake them.

For each unique user ID in multiple systems, we would like to use a unique ID to link the same user ID.I'm having a hard time deciding what logic to use in SQL, so could you give me some advice?There ...

sql google-bigquery

2 years ago

1 answers
365 views
0

I want to resolve 'SQLSTATE [23000]: Integrity constraint violation: 1452 Cannot add or update a child row: a foreign key constraint fails~

I would like to resolve the error below, but I am having a hard time getting it.I would like to save the gatya_id and users_id in the middle table, but the following error appears.I understand that th...

sql laravel

2 years ago

1 answers
391 views
0

kill process id does not exit

I ran kill process ID in MySQL, but the process did not finish successfully.mysql>SHOW FULL PROCESSLIST;+-----+-----------------+-----------------+------+---------+---------+-----------------------...

mysql

2 years ago

1 answers
430 views
0

Password is not hashed.

environmentmampphp7.4mysql 5.7phpmyadminWhat you want to do and what you can't doThe current feature is that after registering with signup.php and saving the name, password column to the users table, ...

php mysql

2 years ago

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