mysql tag

409 questions

1 answers
42 views
0

Unable to log in to MySQL 8.0 console.

I installed MySQL 8.0 on an instance of AWS EC2 and tried to log in.It was impossible.Installation instructions and experiments.Installation $sudo mysql80-community-source MySQL 8.0 Community enabled$...

mysql

2 years ago

1 answers
39 views
0

Comments are reflected in all posts.

I have implemented the comment function of the posted version, but all posts reflect the comments.As I looked into various things and rewritten the code, I couldn't collect the code, so I came up with...

ruby-on-rails ruby mysql

2 years ago

1 answers
46 views
0

Call to a member function bindParam() on string

The cause of this error is unknown.I am sorry to trouble you, but I would appreciate it if you could let me know.Thank you for your cooperation.Fatal error:Uncaught Error:Call to a member function bin...

php mysql

2 years ago

1 answers
40 views
0

I only want to delete the column if the total field is 0 in MySQL.

There are multiple columns in the table, and you want to leave only one or more columns in the table.Also, I would like to change the name of the column, but I am struggling because I don't know the c...

mysql sql

2 years ago

1 answers
44 views
0

When I log in to localhost with xampp, the following screen appears.

What is the cause of this?By the way, the files saved in htdocs are displayed successfully in your browser.

php mysql

2 years ago

1 answers
37 views
0

The logical sum of negatives in the WHERE clause?

Table definitions and contentsCREATE TABLEER (`id`int,`age`int);INSERT INTER (`id`,`age`)VALUES (1, 1), (2, 2), (3, 5), (4, 7), (5, 9);Results you want to extractdid is not 3 < or 」age is not 2 では rec...

mysql

2 years ago

1 answers
120 views
0

I want to resolve MySQL boot error: 1045 with XAMPP

Currently, I am trying to install XAMPP and launch MySQL by referring to the reference book PHP that I can understand easily.ERROR1045(28000): Access denied for user '2170145' '@'localhost' (using pas...

mysql xampp

2 years ago

1 answers
42 views
0

About using MySQL for phpadmin in cakephp

I'm making a simple bulletin board for my school assignment.So I have a question, how can I use the database created by phpadmin in cakephp?The development environment is eclipse.

php mysql cakephp

2 years ago

1 answers
42 views
0

SQLSTATE [3D000]: Invalid catalog name: 1046 No database selected

I'm teaching myself using the text PHP7+MariaDB/MySQL Masterbook.Coding a sample program in text results in a heading error.<?PHP// Keep users, passwords, and hosts secret.Configuring separately.$d...

php mysql

2 years ago

2 answers
45 views
0

I want to categorize and output php arrays with the same id.

Assume that the project and client tables exist in DB, and that the results of the LEFT JOIN merge are sorted in the order of client.id.mysql>SELECT p.id, p.project_name, p.client_id, c.client_name...

php mysql

2 years ago

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