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POjoin three tables in codeigniter with one to many relation
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2013-03-12T08:11:19.637
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2013-03-12T14:47:40.923
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Body
I am doing a project in codeigniter.Here I want to join three tables clients(id, name, email, adminId, campaignId, dateAdded, is_deleted) campaign(id, name, adminId) and order(id, name, cost, dateAdded, clientId). From these tables i want to select(in between two dates) the number of clients added,campaign name and total order cost of a client.When I joined the two tables (clients and campaign) it returns the correct result. The query I used is <pre><code>$this->db->select('clients.id AS my_client, clients.name AS client_name, campaign.name AS campaign_name, DATE(clients.dateAdded) as client_date, COUNT(clients.id) AS num_rows'); $this->db->from('clients'); $this->db->where('clients.adminId', $adminId); $this->db->where('DATE(clients.dateAdded) >=', $from_date); $this->db->where('DATE(clients.dateAdded) <=', $to_date); $this->db->join('campaign', 'campaign.id = clients.campaignId', 'left'); $this->db->group_by('campaign_name'); $query = $this->db->get(); return $query->result(); </code></pre> But when I joined three tables(clients, campaign, order) it is not returning correct result.The relation between client and order is one to many.Ie one client can have more than one order.So it will not give correct value for total number of clients added between two dates.The join query I used to join three tables is <pre><code>$this->db->select('clients.id AS my_client, clients.name AS client_name, campaign.name AS campaign_name, DATE(clients.dateAdded) AS client_date, SUM(order.cost) AS order_cost, COUNT(clients.id) AS num_rows'); $this->db->from('clients'); $this->db->where('clients.adminId', $adminId); $this->db->where('clients.is_deleted', 0); $this->db->where('DATE(clients.dateAdded) >=', $from_date); $this->db->where('DATE(clients.dateAdded) <=', $to_date); $this->db->join('campaign', 'campaign.id = clients.campaignId', 'left'); $this->db->join('order', 'order.clientId = clients.id', 'left'); $this->db->group_by('campaign_name'); $query = $this->db->get(); return $query->result(); </code></pre> Can anyone have some idea to do this.Thanks in advance
Tags
<php><codeigniter><join>
Title
join three tables in codeigniter with one to many relation
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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.