mysql tag

409 questions

1 answers
48 views
0

Warning: mysql_num_rows() expect parameter 1 to be resource, boolean given error

Error statement: Warning: mysql_num_rows() expectations parameter 1 to be resource, boolean give in/Applications/XAMPP/xamppfiles/htdocs/testsite/search.phponline33What is the cause?<html><he...

php mysql

2 years ago

1 answers
45 views
0

Information About Adding Information to Java MySQL

Data Manipulation Classpublic class Toi3_db{ /** * @paramargs * @throws SQLException * @throws ClassNotFoundException */ public static void main(String[]args)rows SQLException, ClassNotFoundExce...

java mysql

2 years ago

1 answers
108 views
0

MySQL goes down with only PDO connections.

To test the load on the rental server, we simulated it with 800 PV/sec access, but after a certain number of seconds (about 30 seconds) each time, the MySQL connection error occurs.負荷 If the load test...

php mysql pdo

2 years ago

1 answers
81 views
0

How do I reflect time zone settings in MySQL on a Docker container?

I have a question about MySQL time zone settings.If you build or run using the Dockerfile below, the container will print an error and exit.like loading timezone table information with the mysql_tzinf...

mysql docker

2 years ago

1 answers
57 views
0

About the Twitter creation reply function in PHP

I started studying PHP on my own a week ago. Therefore, I am trying to create a service like Twitter as one goal, but there are some things that I can't solve by myself, so I would like to ask you a q...

php mysql

2 years ago

2 answers
138 views
0

I stumble when I update the database from PHP.

I'm a beginner in PHP.View the databases associated with each id in detail.php and update those values in dataupdate.php.I would like to do this, but it doesn't work.The detail.php is as follows (just...

php mysql phpmyadmin

2 years ago

1 answers
108 views
0

I want to resolve the error in Request method 'GET' not supported

I would like to resolve the following errors:There was an unexpected error (type=Method Not Allowed, status=405).Request method 'GET' not supportedorg.springframework.web.HttpRequestMethodNotSupported...

java mysql spring-boot

2 years ago

1 answers
70 views
0

I want to change the screen transition destination according to the contents entered in the form.

I just started developing Spring Boot + Thymeleaf + MySQL.I'd like to change the screen transition destination according to what you fill in the form, but it's not working.For example, if you type 1 (...

java mysql spring-boot thymeleaf

2 years ago

1 answers
110 views
0

Error when connecting to Mysql and executing query in Java web app

I would like to connect to MYSQL using the code below and display the results of the range specified in the URL http://hogehoge/hoge/hoge/search?hoge=*.However, there have been many exceptions and err...

java mysql jax-rs

2 years ago

1 answers
44 views
0

What is the difference between VARCHAR(256) and VARCHAR(65,535)?

I'm considering how to store the maximum number of characters between 300 and 500 characters in VARCHAR type.Is the maximum number of characters stored and the number of bytes required not completely ...

mysql

2 years ago

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