mysql tag

409 questions

1 answers
94 views
0

LiferayA portlet that connects to MySQL in the local environment and outputs elements of the table.

I was trying to use the JDBC driver to display the acquired value in jsp, but I looked it up and found that it is common to use Service Builder to retrieve and display values.I even set the table defi...

java mysql jsp framework

2 years ago

1 answers
38 views
0

Mysql also retrieves unlinked data from two tables

When I retrieve data from two tables like the one below, I would like to obtain category data that does not have any categories attached to the template. What should I do?If possible, I would like to ...

mysql

2 years ago

3 answers
43 views
0

Selectively extract data from mysql SELECT statements

I want to extract a record with four fields: id category user_id text and user_id 1 .However, if there is a record with user_id of 5 in the same category, I would like to extract that record first.Is ...

mysql

2 years ago

1 answers
39 views
0

Deleting by Conditions Using Multiple Tables in MySQL

I would like to extract duplicate data from two tables in MySQL and delete duplicate data.This is what I'm thinking.Suppose you have a table like this.Table A |Address|Date of birth|Name|| XX City | J...

mysql sql

2 years ago

1 answers
37 views
0

Error logging in My SQL

When logging in with mysql-h%-uroot-pERROR 2005 (HY000): Unknown MySQL server host '%' (0) will appearHow can I solve this problem?

mysql

2 years ago

1 answers
99 views
0

I want to add a search function to the list screen.

We are creating a system that allows you to apply for overtime on the web using PHP.I want to display everything you have applied for in the list so that you can search at the top of the screen.I want...

php mysql pdo

2 years ago

1 answers
40 views
0

Why is RENAME DATABASE dangerous?

Found this keyter while renaming the database.Enable RENAME DATABASE without dumping in MySQLAt the beginning of the article, it says, The phantom command whose existence has been erased because of it...

mysql sql

2 years ago

2 answers
35 views
0

I want to combine the first line that matches in MySQL

Create a query that compares the TOPIx closing value (thattopix.adjust_price) for a date that is MySQL with the TOPIx closing value (topixfuture.adjust_price) after one year.The holiday data is not st...

mysql

2 years ago

1 answers
48 views
0

I would like to send an e-mail for registration via CakePHP.

I would like to send an e-mail with a link for this membership registration to the e-mail address entered in the membership registration form via CakePHP.Error: SQLSTATE [42000]: Syntax error or acces...

mysql cakephp

2 years ago

1 answers
71 views
0

To Write Multiple Conditions LEFT JOIN in Rails

ModelA - id - c_id - d_idModelB - id - name - c_id - d_idShared columns for ModelA and ModelB are c_id and d_id.SELECT A.id, B.namefrom ModelA ASA LEFT JOIN ModelB ASB ON A.c_id = B.c_id AND A.d_id =...

ruby-on-rails mysql sql rails-activerecord

2 years ago

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