I want to write a query in yii2
and i dont know how to write it
i tried few things from documentaion but its not working
here is my query
SELECT notification.*,event.title,user.firstname,user.lastname FROM notification
LEFT JOIN event ON event.id = notification.source_id
AND notification.activity_type = "checkin"
Where user.firstname in (select id from user where user_id=1)
LEFT JOIN user ON user.id = notification.source_id
AND notification.activity_type = "friend"
Where user.firstname in (select id from user where user_id=1)
and here is the query i write for now,i need to add AND function just like its in the query
$query ->select(['notification.*,event.title,user.firstname,user.lastname'])
->from('notification')
->leftJoin('event', 'event.id = notification.source_id')
->leftJoin('user', 'user.id = notification.source_id');
Have you tried the following:
$query ->select(['notification.*,event.title,user.firstname,user.lastname'])
->from('notification')
->leftJoin('event', 'event.id = notification.source_id AND notification.activity_type = "checkin" ')
->leftJoin('user', 'user.id = notification.source_id AND notification.activity_type = "friend"');
Related
I have a situation where two tables should be joined with multiple columns with or condition. Here, I have a sample of sql query but i was not able to convert it into linq query.
select cm.* from Customer cm
inner join #temp tmp
on cm.CustomerCode = tmp.NewNLKNo or cm.OldAcNo = tmp.OldNLKNo
This is how i have write linq query
await (from cm in Context.CustomerMaster
join li in list.PortalCustomerDetailViewModel
on new { OldNLKNo = cm.OldAcNo, NewNLKNo = cm.CustomerCode } equals new { OldNLKNo = li.OldNLKNo, NewNLKNo = li.NewNLKNo }
select new CustomerInfoViewModel
{
CustomerId = cm.Id,
CustomerCode = cm.CustomerCode,
CustomerFullName = cm.CustomerFullName,
OldCustomerCode = cm.OldCustomerCode,
IsCorporateCustomer = cm.IsCorporateCustomer
}).ToListAsync();
But this query doesn't returns as expected. How do I convert this sql query into linq.
Thank you
You didn't tell if list.PortalCustomerDetailViewModel is some information in the database, or in your local process. It seems that this is in your local process, your query will have to transfer it to the database (maybe that is why it is Tmp in your SQL?)
Requirement: give me all properties of a CustomerMaster for all CustomerMasters where exists at least one PortalCustomerDetailViewModel where
customerMaster.CustomerCode == portalCustomerDetailViewModel.NewNLKNo
|| customerMaster.OldAcNo == portalCustomerDetailViewModel.OldNLKNo
You can't use a normal Join, because a Join works with an AND, you want to work with OR
What you could do, is Select all CustomerMasters where there is any PortalCustomerDetailViewModel that fulfills the provided OR:
I only transfer those properties of list.PortalCustomerDetailViewModel to the database that I need to use in the OR expression:
var checkProperties = list.PortalCustomerDetailViewModel
.Select(portalCustomerDetail => new
{
NewNlkNo = portalCustomerDetail.NewNlkNo,
OldNLKNo = portalCustomerDetail.OldNLKNo,
});
var result = dbContext.CustomerMasters.Where(customerMaster =>
checkProperties.Where(checkProperty =>
customerMaster.CustomerCode == checkProperty.NewNLKNo
|| customerMaster.OldAcNo == checkProperty.OldNLKNo)).Any()))
.Select(customerMaster => new CustomerInfoViewModel
{
Id = customerMaster.Id,
Name = customerMaster.Name,
...
});
In words: from each portalCustomerDetail in list.PortalCustomerDetailViewModel, extract the properties NewNKLNo and OldNLKNo.
Then from the table of CustomerMasters, keep only those customerMasters that have at least one portalCustomerDetail with the properties as described in the OR statement.
From every remaining CustomerMasters, create one new CustomerInfoViewModel containing properties ...
select cm.* from Customer cm
inner join #temp tmp
on cm.CustomerCode = tmp.NewNLKNo or cm.OldAcNo = tmp.OldNLKNo
You don't have to use the join syntax. Adding the predicates in a where clause could get the same result. Try to use the following code:
await (from cm in Context.CustomerMaster
from li in list.PortalCustomerDetailViewModel
where cm.CustomerCode == li.NewNLKNo || cm.OldAcNo = li.OldNLKNo
select new CustomerInfoViewModel
{
CustomerId = cm.Id,
CustomerCode = cm.CustomerCode,
CustomerFullName = cm.CustomerFullName,
OldCustomerCode = cm.OldCustomerCode,
IsCorporateCustomer = cm.IsCorporateCustomer
}).ToListAsync();
var result=_db.Customer
.groupjoin(_db.#temp ,jc=>jc.CustomerCode,c=> c.NewNLKNo,(jc,c)=>{jc,c=c.firstordefault()})
.groupjoin(_db.#temp ,jc2=>jc2.OldAcNo,c2=> c2.OldNLKNo,(jc2,c2)=>{jc2,c2=c2.firstordefault()})
.select(x=> new{
//as you want
}).distinct().tolist();
I need to be able to write the following query as a Criteria.
SELECT hist.*
FROM
Administration admin
INNER JOIN Item item ON item.AdministrationId = admin.AdministrationId
INNER JOIN ItemHistory hist ON hist.ItemId = item.ItemId
WHERE
item.itemId = #param
and hist.IsError =
(
SELECT (CASE status.errorType
WHEN 'Warning' THEN 0
ELSE 1
END
)
FROM
AdminStatus status
WHERE
status.AdministrationId = admin.AdministrationId
AND status.Group = 'Issues'
)
I'm pretty sure I'll need to do the sub query as a detached criteria:
var status = DetachedCriteria.For<AdminStatus>("status");
status.CreateAlias("status.Administration", "admin");
status.Add(Restrictions.Eq("status.Group", "Issues"));
status.SetProjection(Projections.Property("AdministrationId"));
status.SetProjection(Projections.Conditional(
Restrictions.Eq("status.errorType", "Warning"),
Projections.Constant(0),
Projections.Constant(1)));
But I'm not sure how to join that with my primary criteria:
var criteria = Session.CreateCriteria<ItemHIstory>("hist");
criteria.CreateAlias("ItemHistory.Item", "item");
criteria.CreateAlias("item.Administration", "admin");
But I'm not sure how to join that with my primary criteria:
Methods from Subqueries class glue detached sub-query with main criteria. Subqueries.PropertyEq in you case:
var criteria = Session.CreateCriteria<ItemHIstory>("hist");
criteria.CreateAlias("ItemHistory.Item", "item");
criteria.CreateAlias("item.Administration", "admin");
criteria.Add(Subqueries.PropertyEq("hist.IsError ", status))
And regarding detached criteria. Alias creation seems unnecessary:
var status = DetachedCriteria.For<AdminStatus>("status");
status.Add(Restrictions.EqProperty("status.AdministrationId", "admin.AdministrationId"));
status.Add(Restrictions.Eq("status.Group", "Issues"));
status.SetProjection(Projections.Conditional(
Restrictions.Eq("status.errorType", "Warning"),
Projections.Constant(0),
Projections.Constant(1)));
I want to execute the below sql query using Yii framework and need help on this.
SQL query
SELECT t.*, LP.name AS lp_name FROM `user` AS `t` LEFT JOIN `level_profiles` AS `LP` ON t.prof_i = LP.id WHERE t.bld_i IN (17)
So, i tried the below steps.
$usql = 't.bld_i IN (17)';
$criteria1 = new CDbCriteria;
$criteria1->select = 't.*, LP.*';
$criteria1->join = ' LEFT JOIN `level_profiles` AS `LP` ON t.prof_i = LP.id';
$criteria1->addCondition($usql);
$criteria1->order = 't.prof_i';
$result = User::model()->findAll($criteria1);
The above step is not allowing me to access the value from 'level_profiles' table.
Then, i tried to execute:
$usql = 't.bld_i IN (17)';
$result = User::model()->with('level_profiles', array(
'level_profiles'=>array(
'select'=>'name',
'joinType'=>'LEFT JOIN',
'condition'=>'level_profiles.id="prof_i"',
),
))->findAll($usql);
This is returning an error 'Relation "level_profiles" is not defined in active record class "User". '
I know this could be executed using the below method.
Yii::app()->db->createCommand('SELECT query')->queryAll();
But i dont want to use the above.
I am a beginner with Yii and tried to look into the forums. But, i am getting confused how to execute the query using "User::model()" approach .
class User extends CActiveRecord
{
......
public function relations()
{
return array(
'level_porfile_relation'=>array(self::BELONGS_TO, 'Level_Profiles_Modelname', 'prof_i'),
);
}
and your query will be:
$result = User::model()->with('level_porfile_relation')->findAll($usql);
I have this working query:
$q = $this->db->query('SELECT u.name FROM users u
JOIN user_group ug ON u.id = ug.user_id
JOIN groups g ON g.id = ug.group_id WHERE ug.group_id = "4" ');
And I want to replace it with aactive record. I come up with something like this but obviously it doesn't work :
$this->db->select('name');
$this->db->from('users');
$this->db->join('user_group', 'user_group.user_id = users.id);
$this->db->join('groups', 'groups.id = user_group.group_id');
$q = $this->db->get();
Thanks
Leron
I think you forget add where clause. And there was single quote missing.
$this->db->select('name');
$this->db->from('users');
$this->db->join('user_group', 'user_group.user_id = users.id');
$this->db->join('groups', 'groups.id = user_group.group_id');
$this->db->where('user_group.group_id', 4);
$q = $this->db->get();
I am trying to get the thumbnail meta data for the posts in my wordpress blog together with their category and some other data.
The thumbnail data is serialized and I will unserialize it later.
Here is the query I have:
SELECT wpostmeta.meta_value AS url,
wposts.post_content, wposts.post_title, wposts.post_status, wposts.post_name,
cat_terms.name AS category_name, cat_terms.term_id AS category_id,
ttable.meta_value AS thumb_data
FROM `wp_postmeta` AS wpostmeta,
`wp_posts` AS wposts
INNER JOIN wp_term_relationships AS cat_term_relationships ON (wposts.ID = cat_term_relationships.object_id)
INNER JOIN wp_term_taxonomy AS cat_term_taxonomy ON (cat_term_relationships.term_taxonomy_id = cat_term_taxonomy.term_taxonomy_id AND cat_term_taxonomy.taxonomy = 'category')
INNER JOIN wp_terms AS cat_terms ON (cat_term_taxonomy.term_id = cat_terms.term_id)
LEFT JOIN `wp_postmeta` AS ttable ON (wposts.ID = ttable.post_id AND ttable.meta_key = '_wp_attachment_metadata')
WHERE wposts.ID = wpostmeta.post_id AND wpostmeta.meta_key = 'url'
AND wposts.post_type = 'post'
Everything works except for the attachment part. 'thumb_data' is NULL.
Could you please help me fix this?
This query solved my problem:
$sql = "SELECT wposts.ID AS ID, thumbposts.ID AS thumbposts_ID,
postmeta.meta_value AS url,
wposts.post_content, wposts.post_title, wposts.post_status, wposts.post_name,
cat_terms.name AS category_name, cat_terms.term_id AS category_id,
thumb.meta_value AS thumb_data
FROM `wp_postmeta` AS postmeta,
`wp_posts` AS thumbposts,
`wp_postmeta` AS thumb,
`wp_posts` AS wposts
INNER JOIN wp_term_relationships AS cat_term_relationships ON (wposts.ID = cat_term_relationships.object_id)
INNER JOIN wp_term_taxonomy AS cat_term_taxonomy ON (cat_term_relationships.term_taxonomy_id = cat_term_taxonomy.term_taxonomy_id AND cat_term_taxonomy.taxonomy = 'category')
INNER JOIN wp_terms AS cat_terms ON (cat_term_taxonomy.term_id = cat_terms.term_id)
WHERE wposts.ID = postmeta.post_id
AND postmeta.meta_key = 'url'
AND thumbposts.post_parent = wposts.ID
AND thumbposts.post_type = 'attachment'
AND thumb.post_id = thumbposts.ID
AND thumb.meta_key = '_wp_attachment_metadata'
AND wposts.post_type = 'post'";
if($filter == 1){
$sql .= " AND cat_terms.term_id = '1'";
}
if($filter == 2){
$sql .= " AND cat_terms.term_id = '3'";
}
$sql .= " GROUP BY wposts.ID
ORDER BY wposts.post_date ASC";
Can you explain exactly what you are trying to achieve - there is no real need to go direct to the database in the vast number of situations.
For example you can use get_posts with 'post_type'=>'attachment' and 'post_mime_type'=>'image' to get image attachments and then output the metadata, and there are many functions inbuilt to deal with resizing, displaying and cropping the thumbnails, such as get_post_thumbnail() etc.