I'm using MySQL and have a table with name Music that has tracks information like title,duration and ... This table also has "total_hit" column that it's value will be updated frequently by each track played(+1) : id title duration ...…
I have two tables Customers customer customer_name 1 Headley Quincey 2 Andie Smith 3 Sarah Johnson 4 Ernest Forrest Payments payment_id date customer sum_payment 1 2010-01-02 2 200 2 2011-06-06 3 500 3 2020-01-01 1 700 4 2020-02-01 1 100…
just want to ask information. can I update data automatically in MYSQL using codeigniter 4? for example: if I have a table named table1 and it has fields number(int),dateStart(datetime). For starters, I enter a value into the number field, which…
I'am using jakarta and when I run the app the "Student" and "Teacher" tables didn't created and only the "User" table is created. What could be the problem ? User class import jakarta.persistence.*; import java.io.Serializable; @Entity public class User implements…
java.lang.ClassNotFoundException: com.mysql.jdbc.Driver import java.sql.Connection; import java.sql.DriverManager; import java.sql.SQLException; import java.util.logging.Level; import java.util.logging.Logger; public class App { public static void main(String[] args) { App pro = new App(); pro.createConnection(); } void createConnection(){ try{ Class.forName("com.mysql.cj.jdbc.Drive"); Connection con = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb", "root","root"); System.out.print("testinggg"); }catch(ClassNotFoundException…
I joined a table with it self and I have repeated pairs as I highlighted in the below image how to remove them? select DISTINCT A.name as name1 , B.name as name2 from (select name , ratings.* from reviewers inner…
I am developing a .Net application that requires a ODBC connection to an external vendor's MySQL database. The issue is that while doing development I cannot access this ODBC connection from my development machine. I have access to a remote…
I need a sql query to print the count of records from different table for particular column. I have tried the below but it is not working. SELECT t1.names, COUNT(t1.name) as Table1 count, COUNT(t2.FILENAME) as Table2 count FROM Table1 t1…
I am building a db with MySQL and would like to add several records at the same time, using a SELECT subquery to find values from a different table. This query inserts a track into the tbl_track and checks if…
I'm trying to select a specific column from a relationship. F.x User::with(array('phone' => function($q) { $q->where('ext', "!=" 42); }))->select('id', 'number'); Here i ONLY want to select the user ID, and the number for the phone. How can i do that?…