codeigniter distinct
$this->db->distinct();. 在查詢中加入"DISTINCT" 關鍵字. $this->db->distinct(); $this->db->get('table'); // 產生： SELECT DISTINCT * FROM table ... ,舊的groupby() 方法已經被移除，而被group_by() 方法取代. $this->db->distinct(). 用來在查詢中加入“DISTINCT” 關鍵字. $this->db->distinct(); $this->db->get('table'); ... ,You can use distinct as $this->db->distinct('reg.registration_id'); $this->db->select('reg.users_id,reg.device_type'); .... But better use group_by ,You can also run ->select('DISTINCT `field`', FALSE) and the second parameter tells CI not to escape the first argument. With the second parameter the output ... ,but Distinct will not always work. You should add - >group_by("name_of_the_column_which_needs_to_be unique"); $this->db->group_by('column_name');. ,Try like this $this->db->select('DISTINCT `name`'); //You may use $this->db->distinct('name'); $this->db->select('*');. Select the distinct values by names. ,CodeIgniter does not require that each database table be its own class file. It instead provides a more simplified ..... Adds the “DISTINCT” keyword to a query. ,CodeIgniter does not require that each database table be its own class file. It instead provides a more simplified ..... Adds the “DISTINCT” keyword to a query.
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 codeigniter distinct 相關參考資料
Active Record 類別: CodeIgniter 使用手冊
$this->db->distinct();. 在查詢中加入"DISTINCT" 關鍵字. $this->db->distinct(); $this->db->get('table'); // 產生： SELECT DISTINCT * FROM table ... https://codeigniter.org.tw 查詢生成器類別— CodeIgniter 3.1.5 documentation
舊的groupby() 方法已經被移除，而被group_by() 方法取代. $this->db->distinct(). 用來在查詢中加入“DISTINCT” 關鍵字. $this->db->distinct(); $this->db->get('table'); ... https://codeigniter.org.tw How to use 'DISTINCT' in Codeigniter Active Records? - Stack Overflow
You can use distinct as $this->db->distinct('reg.registration_id'); $this->db->select('reg.users_id,reg.device_type'); .... But better use group_by https://stackoverflow.com CodeIgniter: How To Do a Select (Distinct Fieldname) MySQL Query ...
You can also run ->select('DISTINCT `field`', FALSE) and the second parameter tells CI not to escape the first argument. With the second parameter the output ... https://stackoverflow.com how to use DISTINCT here in my query CODEIGNITER - Stack Overflow
but Distinct will not always work. You should add - >group_by("name_of_the_column_which_needs_to_be unique"); $this->db->group_by('column_name');. https://stackoverflow.com Select only unique values from a column in codeigniter - Stack ...
Try like this $this->db->select('DISTINCT `name`'); //You may use $this->db->distinct('name'); $this->db->select('*');. Select the distinct values by names. https://stackoverflow.com Query Builder Class — CodeIgniter 3.1.9 documentation
CodeIgniter does not require that each database table be its own class file. It instead provides a more simplified ..... Adds the “DISTINCT” keyword to a query. https://www.codeigniter.com Query Builder Class — CodeIgniter 3.1.10 documentation
CodeIgniter does not require that each database table be its own class file. It instead provides a more simplified ..... Adds the “DISTINCT” keyword to a query. https://www.codeigniter.com |