Code: Select all
SELECT accounts.NameSurname, Projects.Name, personnels.NameSurname
FROM accounts
JOIN projects ON ( accounts.Id = projects.AccountId )
JOIN projectpersonnels ON ( projects.Id = projectpersonnels.ProjectId )
JOIN accounts AS personnels ON ( projectpersonnels.AccountId = personnels.Id )
Warum sollten die Abfragen oben und unten zu unterschiedlichen „Spalten“-Titeln und Spaltenzahlen führen?
Ich führe die obige Abfrage in phpmyadmin aus.
mit MySQL und Codeigniter 1.7.3
Code: Select all
$this->db->select('accounts.NameSurname,projects.Name,personnels.NameSurname');
$this->db->from('accounts');
$this->db->join('projects','accounts.Id = projects.AccountId' );
$this->db->join('projectpersonnels','projects.Id = projectpersonnels.ProjectId');
$this->db->join('accounts as personnels','projectpersonnels.AccountId = personnels.Id');
$q=$this->db->get();
Vielen Dank fürs Lesen und Antworten.
Mobile version