625 questions
I wrote a method for registering data using sqlalchemy, but Error setting foreign key.In addition, the Belong class id is called as a foreign key in the Page class.▼ I want to be able to POST.* GET: I...
Suppose you have a table similar to the following:table: m_tblID AreaCode--- ---1 00000000012 00000000023 00000000034 00000000215 0000000044. .. .. .ID is the primary keyDuplicate AreaCode is acceptab...
Only certain table JOINs fail in PostgreSQLWe are developing API servers in Go language and PostgreSQL.At that time, the following error occurs only when the user table is used as JOIN.Starting from t...
I am creating a web application that allows me to manage the information of my books using CakePHP and MySQL.SQL.I have no plans to publish it to the outside world, but I started making it because I w...
Comparing dates in the WHERE clause of the UPDATE statement results in an incorrect datetime value.The following is the execution SQL.UPDATE SHAINSET COLUMN1 = COLUMN2WHERE DATE_FORMAT(NOW(), '%Y%m%d'...
Once I logged out of SQL, I couldn't put it in the existing database anymoreThe error is ERROR2006(HY000):MySQL server has gone awayNo connection.Trying to reconnect...ERROR 2013 (HY000): Lost connect...
environment·CentOS·MySQL 5.6...password is set in mysql_config_editor·Linux username...testThe following command creates the file as expected.sh hoge.sh▼hoge.sh mysqldump --single-transaction-u databa...
The error appears as follows: It seems to be a grammatical error, but is it written incorrectly?Error: Parse error: syntax error, unexpected '$_SESSION'(T_VARIABLE), expecting', 'or'; 'in/var/www/html...
I would like to make the following query using the django model.Is it possible to do it in a model class?select *from table twhere (t.col1, t.col2) in ( (hoge, fuga), (foo, bar) )Quoted from https:/...
Programming with PHP and MySqlThe $data array contains id (unique), date.Insert this data into the MySQL tableIf MySQL already has the same date, you want to exclude that $data and insert the data int...
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