i have mysql query like this:
SELECT * FROM ms_project_log
INNER JOIN ms_project ON ms_project_log.iwo_no = ms_project.iwo_no
WHERE ms_project_log.iwo_no = '0007/NMS/BOTM/01/12'
ORDER BY ms_project_log.log_date DESC
how to convert to codeigniter active record?
here's a code for you
$this->db->select('*');
$this->db->from('ms_project_log');
$this->db->join('ms_project','ms_project_log.iwo_no=ms_project_iwo_no', 'inner');
$this->db->where(ms_project_log.iwo_no, '0007/NMS/BOTM/01/12');
$this->db->order_by("ms_project_log.log_date", "desc");
$this->db->get();
$this->db->join('ms_project','ms_project_log.iwo_no = ms_project.iwo_no','inner')
->order_by('ms_project_log.log_date','desc')
->get_where('ms_project_log', array('ms_project_log.iwo_no'=>'0007/NMS/BOTM/01/12'))
->result_array();
You can filter selected column using select method, by default if not using select method your query will use "select *"
Related
I have a database table with separate date and time column. To get particular I execute query in mysql in following manner
select * from table_A where empID='A1201' order by TIMESTAMP(date,time) desc limit 1
How can I convert this particular for codeigniter? I tried in following manner but it's not working
$column = 'TIMESTAMP(date,time)';
$this->db->select('*');
$this->db->where('empID', 'A1201');
$this->db->from('table_A');
$this->db->order_by($column, 'desc');
$this->db->limit(1);
$query = $this->db->get();
$data = $query->result();
return $data;
This query result in error since it executes in following manner ORDER BY TIMESTAMP(date DESC, time) DESC while the correct way is ORDER BY TIMESTAMP(date,time) DESC. What will be the correct way for codeigniter using active record
try this
$query = $this->db
->select('*')
->where('empID', 'A1201')
->from('table_A')
->order_by($column, 'desc', false)
->limit(1)
->get();
order by comes with a 3rd option - just set this to false
You can get more infos about that in their documentation here
I'm working on a project using codeigniter 3 and I have a following query
$this->db->select("*");
$this->db->from("questions");
$this->db->join('users', 'users.id = questions.user_id');
$this->db->where('article_id', $articleId);
$this->db->order_by('questions.id', 'DESC');
$query = $this->db->get();
return $query->result();
// query
// SELECT * FROM `questions` JOIN `users` ON `users`.`id` = `questions`.`user_id` WHERE `article_id` = 18 ORDER BY `questions`.`id` DESC
Currently, the id property from users table overrides the questions id one. The question's id is crucial.
I worry, I will have to write a custom query, which I am not really good at.
Try to do this as follow:
$this->db->select("*, questions.id as question_id");
It's obvious that properties with the same name will be overriden. That's why you should assign to them 'unique' names in select statement.
You can specifically mention the ids with alies like -
$this->db->select("questions.id as question_id, users.id as user_id, questions.*, users.*");
$this->db->from("questions");
$this->db->join('users', 'users.id = questions.user_id');
$this->db->where('article_id', $articleId);
$this->db->order_by('questions.id', 'DESC');
$query = $this->db->get();
return $query->result();
This will give you specific columns named with question_id, user_id, questions table's all columns, users table's all columns
Or another better solution to use specific column names in select with alies if required.
how to write simple query into codeigniter query using join righ?????
$query = $this->db->query("Select staff_permissions_list.perm_type,staff_permissions_list.permission_key,staff_permissions_list.permission_label,
staff_permissions_list.id, staff_role_permissions.permission_id as p_id,staff_role_permissions.role_id
FROM staff_role_permissions
RIGHT JOIN staff_permissions_list ON staff_role_permissions.permission_id=staff_permissions_list.id
AND staff_role_permissions.role_id=$id WHERE staff_permissions_list.perm_type=0
ORDER BY staff_permissions_list.id ASC
");
if ($query->num_rows() > 0) {
return $query->result_array();
}
$this->db->select('book_id, book_name, author_name, category_name');
$this->db->from('books');
$this->db->join('category', 'category.category_id = books.category_id', 'right');
$query = $this->db->get();
you can get data using this method of right join
How about that ?
$query = $this->db
->select("Select staff_permissions_list.perm_type,staff_permissions_list.permission_key,staff_permissions_list.permission_label,staff_permissions_list.id, staff_role_permissions.permission_id as p_id,staff_role_permissions.role_id")
->from("staff_role_permissions AS srp")
->join("staff_permissions_list AS spl","srp.permission_id = spl.id","right")
->where("spl.perm_type","0")
->where("srp.role_id",$id)
->order_by("spl.id","ASC")
->get();
i put the role_id to the where section - maybe you need to put it back (not sure what you want to achieve here)
function getCategory($year){
if(!$year){
$year=2017;
}
$q = $this->msdb->query("SELECT category_code, COUNT(*) AS numb
FROM easypm_sales_orders WHERE YEAR(sales_date) = $year
GROUP BY category_code ORDER BY COUNT(*) DESC");
return $q->result();
}
So, I have this model function and I want to translate the SQL query bit into codeigniter. I tried:
function getCategory($year){
if(!$year){
$year=2017;
}
$this->db->select('category_code');
$this->db->count("* as 'numb'");
$this->db->from('easypm_sales_orders');
$this->db->where('YEAR(sales_date)', $year);
$this->db->group_by('category_code');
$q = $this->db->order_by('numb', 'desc');
return $q->result();
}
but no luck, is there something I'm doing wrong?
try this
$query = $this->db
->select("category_code, count(*) AS numb",false)
->from ("easypm_sales_orders")
->where("YEAR(sales_date)",$year)
->group_by("category_code")
->order_by("numb","DESC")
->get();
return $query->result();
I believe it is necessary to use DB::raw() to represent a WHERE clause involving a function of a database column. Also, while it is possible to get a count from a Laravel query without using DB::raw(), if you want to assign a custom alias to that count it is also needed here. Consider the following code:
$this->db->select(DB::raw('count(*) as numb, category_code'))
$this->db->from('easypm_sales_orders');
$this->db->whereRaw('YEAR(sales_date) = ?', $year);
$this->db->group_by('category_code');
$q = $this->db->order_by('numb', 'desc');
return $q->result();
Codeigniter active record has no count method.
only count_all_results and count_all and they are used differently
You need replace your select options like this and remove $this->db->count("* as 'numb'");
$this->db->select('category_code');
$this->db->select('COUNT(*) numb');
Rest of your code OK.
I have the following query:
$this->db
->select('SQL_CALC_FOUND_ROWS null as rows
,table1.*
,table2.*
,table3.*', FALSE)
->from('table1')
->where('table1.column1', $user_id)
->join('table2', 'table2.column2 = table1.column2')
->join('table3', 'table3.column2 = table1.column2')
->group_by('table1.column2')
->order_by('table1.column2', 'DESC');
$query = $this->db->get();
The problem is, there may not be a row in table 3 and if there is not, I would still like to return a result with the remainder of the query data. Please could someone advise how to achieve this?
you should do a left join on table3
Use left join and also use group_by to get exact records:
$this->db->join('login_ranknames AS t4', 't4.id = t1.rank', 'left');
$this->db->group_by('t4.id');