Why query returns empty collection? - laravel

I have the following query was built by Laravel:
$res = Announcement::whereExists(function ($query) {
$query->select(DB::raw(1))
->from('announcement_category')->join('user_category', 'user_category.category_id', '=', 'announcement_category.category_id')
->where('user_category.user_id', '=', 1)
->where('announcement_category.announcement_id', '=', 'announcements.id');
});
dd($res->get());
The code above gives me empty collection: dd($res->get());.
The plain SQL code of this query is:
select * from `announcements` where exists (select 1 from
`announcement_category` inner join `user_category` on
`user_category`.`category_id` = `announcement_category`.`category_id` where `user_category`.`user_id` = 1
and `announcement_category`.`announcement_id` = announcements.id)
and `announcements`.`deleted_at` is null
If execute this directly in MySQL, I get two result rows.
But why dd($res->get()); retuns me empty?

I don't think there is a whereExists in eloquent model... try this:
$res = DB::table('announcement')->whereExists(function ($query) {
$query->select(DB::raw(1))
->from('announcement_category')->join('user_category', 'user_category.category_id', '=', 'announcement_category.category_id')
->where('user_category.user_id', '=', 1)
->where('announcement_category.announcement_id', '=', 'announcements.id');
})->get();

Related

Laravel Parameter Grouping (and/or where)

I upgraded Laravel to version 7, and when I do a query like this:
$users = User::where('name', '=', 'John')
->where(function ($query) {
$query->where('votes', '>', 100)
->orWhereNull('title');
})
->get();
it doesn't work as expected, and I got this error [SQL Server] Must specify table to select from
because the SQL should be like this:
select * from users where name = 'John' and (votes > 100 or title is null)
but when I debug the returned query it shows like this:
select * from users where name = 'John' and (select * votes > 100 or title is null) is null
The above query it just an example of my complex query, and I have a lot like this query in all of my project so I don't need a replacement, I just need to know how to fix it as it worked fine before upgrading
You can use whereRaw for the alternative method, for example
$users = Table::whereRaw(" name=? AND (votes=? OR title=?)", array(?,?,?))
$users = User::where('name', '=', 'John')
->where(function ($query) {
$query->from('users')
->where('votes', '>', 100)
->orWhereNull('title');
})
->get();

How to make query at laravel

I have sql like this
SELECT no_po FROM tpo_suppheader WHERE no_po not in (
SELECT no_po FROM tpo_supp_stok ).
How to code at laravel?
$datas = DB::table ('tpo_suppheader')
->join('tpo_suppdetil', 'tpo_suppheader.no_po', '=', 'tpo_suppdetil.no_po')
->join('tmsupplier', 'tpo_suppheader.suppid', '=', 'tmsupplier.id')
->select('tpo_suppheader.*', 'tpo_suppdetil.*', 'tmsupplier.nama_supp')
->where('tpo_suppheader.no_po','like',"%".$var_cari."%")
->whereNotIn('no_po', $data_dtl)
->get();
$datas = DB::table ('tpo_suppheader')
->join('tpo_suppdetil', 'tpo_suppheader.no_po', '=', 'tpo_suppdetil.no_po')
->join('tmsupplier', 'tpo_suppheader.suppid', '=', 'tmsupplier.id')
->select('tpo_suppheader.*', 'tpo_suppdetil.*', 'tmsupplier.nama_supp')
->where('tpo_suppheader.no_po','like',"%".$var_cari."%")
->whereNotIn('no_po', $data_dtl)
->get();
This will work for every query: use toSql() to know how the builder translates a query.
For example:
dd(DB::table('table1')->...->toSql());
will dump the translated query. Tinker with this until you get the desired result. Using this method of trial and error, I got this:
$query = DB::table('tpo_suppheader')->select('no_po') # SELECT no_po FROM tpo_suppheader
->whereNotIn('no_po', function ($subquery) { # WHERE no_po NOT IN (
$subquery->select('no_po')->from('tpo_supp_stok'); # SELECT no_po FROM tpo_supp_stok
}); # )
dd($query->toSql());
# "select "no_po" from "tpo_suppheader" where "no_po" not in (select "no_po" from "tpo_supp_stok")"
$results = $query->get();

Laravel query not giving desired result

Can someone help fix this query. Query is returning null result for "j.code" and "accounts.title". And I am 100% sure that it should return result. I think my left join are missing something. Is this the proper way of using left join within a left join.
$query = DB::table('autostk')
->where('autostk.branchid', $branch_id)
->where('autostk.itemcode',$request->itemcode)
->whereDate('autostk.date','<=',$request->tdate)
->leftjoin('journal AS j', function($join) use ($branch_id) {
$join->on('autostk.refno', '=', 'j.vno')
->where('j.code', '>=', 100)
->where('j.branchid', $branch_id)
->where('j.vtype', '=', 'autostk.vtype')
->leftjoin('accounts', 'j.code', '=', 'accounts.code')
->where('accounts.branchid', $branch_id);
})
->select('j.code','accounts.title','autostk.*')
->orderBY('date')->get()
->map(function ($item, $key) {
return (array) $item;
})
->all();
The raw query being generated is :
select `j`.`code`, `accounts`.`title`, `autostk`.* from `autostk`
left join (`journal` as `j` left join `accounts` on `j`.`code`=`accounts`.`code`)
on `autostk`.`refno` = `j`.`vno` and `j`.`code` >= ? and `j`.`branchid` = ?
and `j`.`vtype` = ? and `accounts`.`branchid` = ? where `autostk`.`branchid` = ?
and `autostk`.`itemcode` = ? and date(`autostk`.`date`) <= ? order by
`autostk`.`date` asc
UPDATE :
While checking the QueryLog i noticed that the binding for 'j'.'vtype' is "autostk.vtype"
Applying the query in workbench with 'autostk.vtype' returned null results.
But when I changed it to 'autostk'.'vtype' the results showed up correctly.
How to make this change in Laravel Eloquent ?
Please try like below:
$query = DB::table('autostk')
->where('autostk.branchid', $branch_id)
->where('autostk.itemcode',$request->itemcode)
->whereDate('autostk.date','<=',$request->tdate)
->leftjoin('journal as j', function($join) use ($branch_id) {
$join->on('autostk.refno', '=', 'j.vno')
->where('j.code', '>=', 100)
->where('j.branchid', $branch_id)
->where('j.vtype', '=', 'autostk.vtype')
->leftjoin('accounts', 'j.code', '=', 'accounts.code')
->where('accounts.branchid', $branch_id);
})
->select('j.code','accounts.title','autostk.*')
->orderBy('autostk.date')->get()
->map(function ($item, $key) {
return (array) $item;
})
->all();
There is one problem:
->orderBy('autostk.date')
And you can use toArray() instead of map() like this
->orderBy('autostk.date')->get()->toArray();
Found the solution. Correct query is :
$query = DB::table('autostk')
->where('autostk.branchid', $branch_id)
->where('autostk.itemcode',$request->itemcode)
->whereDate('autostk.date','<=',$request->tdate)
->leftjoin('journal AS j', function($join) use ($branch_id) {
$join->on('autostk.refno', '=', 'j.vno')
->on('autostk.vtype', '=', 'j.vtype')
->where('j.code', '>=', 100)
->where('j.branchid', $branch_id)
->leftjoin('accounts', 'j.code', '=', 'accounts.code')
->where('accounts.branchid', $branch_id);
})
->select('j.code','accounts.title','autostk.*')
->orderBY('autostk.date')->get()
->map(function ($item, $key) {
return (array) $item;
})
->all();
->leftjoin('journal as j', function($join) use ($branch_id) {
as instead of AS

Laravel distinct on join results not working in query builder

I have a posts table that has join query with 4 other tables. 3 of them are one to one relations but the 4th is one to many. I want the query to return only 1 row for each post. What i am trying so far is like this-
$query = DB::table('posts')
->select('posts.*',
'subcategories.subcategory_title_en',
'subcategories.subcategory_title_bn',
'categories.category_title_en',
'categories.category_title_bn',
'users.*',
'postimages.postimage_thumbnail'
)
->join('subcategories', 'subcategories.subcategory_id', '=', 'posts.subcategory_id')
->join('categories', 'categories.category_id', '=', 'subcategories.parent_category_id')
->join('users', 'users.id', '=', 'posts.user_id')
->join('postimages', 'postimages.post_id', '=', 'posts.post_id');
$query->groupBy('posts.post_id');
echo $query->count();
exit();
I have currently 50 posts in database, but the query returns all rows for each postimages, more than 1 row for each post that is. I thought distinct would only show each post_id once? What am i missing here?
I would prefer if someone tells me how to do this with query builder. As this will have a lot of searching on different columns and i want it to be as fast as possible.
This is a simpler version -
$query = DB::table('posts')
->select('posts.*','postimages.postimage_thumbnail')
->join('postimages', 'postimages.post_id', '=', 'posts.post_id')
->groupBy('posts.post_id');
echo $query->count();
exit();
The strange thing is the SQL query that is shown by laravel " select posts.*, postimages.postimage_thumbnail from posts inner join postimages on postimages.post_id = posts.post_id group by posts.post_id" works fine in mysql
You should use groupby
Try this code
$query = DB::table('posts')
->select('posts.*',
'subcategories.subcategory_title_en',
'subcategories.subcategory_title_bn',
'categories.category_title_en',
'categories.category_title_bn',
'users.*',
'postimages.postimage_thumbnail'
)
->join('subcategories', 'subcategories.subcategory_id', '=', 'posts.subcategory_id')
->join('categories', 'categories.category_id', '=', 'subcategories.parent_category_id')
->join('users', 'users.id', '=', 'posts.user_id')
->join('postimages', 'postimages.post_id', '=', 'posts.post_id')->groupBy('posts.post_id');
In config/database.php at "mysql" change : 'strict' => true, to false

A JOIN With Additional Conditions Using Query Builder or Eloquent

I'm trying to add a condition using a JOIN query with Laravel Query Builder.
<?php
$results = DB::select('
SELECT DISTINCT
*
FROM
rooms
LEFT JOIN bookings
ON rooms.id = bookings.room_type_id
AND ( bookings.arrival between ? and ?
OR bookings.departure between ? and ? )
WHERE
bookings.room_type_id IS NULL
LIMIT 20',
array('2012-05-01', '2012-05-10', '2012-05-01', '2012-05-10')
);
I know I can use Raw Expressions but then there will be SQL injection points. I've tried the following with Query Builder but the generated query (and obviously, query results) aren't what I intended:
$results = DB::table('rooms')
->distinct()
->leftJoin('bookings', function ($join) {
$join->on('rooms.id', '=', 'bookings.room_type_id');
})
->whereBetween('arrival', array('2012-05-01', '2012-05-10'))
->whereBetween('departure', array('2012-05-01', '2012-05-10'))
->where('bookings.room_type_id', '=', null)
->get();
This is the generated query by Laravel:
select distinct * from `room_type_info`
left join `bookings`
on `room_type_info`.`id` = `bookings`.`room_type_id`
where `arrival` between ? and ?
and `departure` between ? and ?
and `bookings`.`room_type_id` is null
As you can see, the query output doesn't have the structure (especially under JOIN scope). Is it possible to add additional conditions under the JOIN?
How can I build the same query using Laravel's Query Builder (if possible) Is it better to use Eloquent, or should stay with DB::select?
$results = DB::table('rooms')
->distinct()
->leftJoin('bookings', function($join)
{
$join->on('rooms.id', '=', 'bookings.room_type_id');
$join->on('arrival','>=',DB::raw("'2012-05-01'"));
$join->on('arrival','<=',DB::raw("'2012-05-10'"));
$join->on('departure','>=',DB::raw("'2012-05-01'"));
$join->on('departure','<=',DB::raw("'2012-05-10'"));
})
->where('bookings.room_type_id', '=', NULL)
->get();
Not quite sure if the between clause can be added to the join in laravel.
Notes:
DB::raw() instructs Laravel not to put back quotes.
By passing a closure to join methods you can add more join conditions to it, on() will add AND condition and orOn() will add OR condition.
If you have some params, you can do this.
$results = DB::table('rooms')
->distinct()
->leftJoin('bookings', function($join) use ($param1, $param2)
{
$join->on('rooms.id', '=', 'bookings.room_type_id');
$join->on('arrival','=',DB::raw("'".$param1."'"));
$join->on('arrival','=',DB::raw("'".$param2."'"));
})
->where('bookings.room_type_id', '=', NULL)
->get();
and then return your query
return $results;
You can replicate those brackets in the left join:
LEFT JOIN bookings
ON rooms.id = bookings.room_type_id
AND ( bookings.arrival between ? and ?
OR bookings.departure between ? and ? )
is
->leftJoin('bookings', function($join){
$join->on('rooms.id', '=', 'bookings.room_type_id');
$join->on(DB::raw('( bookings.arrival between ? and ? OR bookings.departure between ? and ? )'), DB::raw(''), DB::raw(''));
})
You'll then have to set the bindings later using "setBindings" as described in this SO post:
How to bind parameters to a raw DB query in Laravel that's used on a model?
It's not pretty but it works.
The sql query sample like this
LEFT JOIN bookings
ON rooms.id = bookings.room_type_id
AND (bookings.arrival = ?
OR bookings.departure = ?)
Laravel join with multiple conditions
->leftJoin('bookings', function($join) use ($param1, $param2) {
$join->on('rooms.id', '=', 'bookings.room_type_id');
$join->on(function($query) use ($param1, $param2) {
$query->on('bookings.arrival', '=', $param1);
$query->orOn('departure', '=',$param2);
});
})
I am using laravel5.2 and we can add joins with different options, you can modify as per your requirement.
Option 1:
DB::table('users')
->join('contacts', function ($join) {
$join->on('users.id', '=', 'contacts.user_id')->orOn(...);//you add more joins here
})// and you add more joins here
->get();
Option 2:
$users = DB::table('users')
->join('contacts', 'users.id', '=', 'contacts.user_id')
->join('orders', 'users.id', '=', 'orders.user_id')// you may add more joins
->select('users.*', 'contacts.phone', 'orders.price')
->get();
option 3:
$users = DB::table('users')
->leftJoin('posts', 'users.id', '=', 'posts.user_id')
->leftJoin('...', '...', '...', '...')// you may add more joins
->get();
For conditional params we can use where,
$results = DB::table('rooms')
->distinct()
->leftJoin('bookings', function($join) use ($param)
{
$join->on('rooms.id', '=', 'bookings.room_type_id')
->where('arrival','=', $param);
})
->where('bookings.room_type_id', '=', NULL)
->get();
There's a difference between the raw queries and standard selects (between the DB::raw and DB::select methods).
You can do what you want using a DB::select and simply dropping in the ? placeholder much like you do with prepared statements (it's actually what it's doing).
A small example:
$results = DB::select('SELECT * FROM user WHERE username=?', ['jason']);
The second parameter is an array of values that will be used to replace the placeholders in the query from left to right.
My five cents for scheme LEFT JOIN ON (.. or ..) and (.. or ..) and ..
->join('checks','checks.id','check_id')
->leftJoin('schema_risks', function (JoinClause $join) use($order_type_id, $check_group_id, $filial_id){
$join->on(function($join){
$join->on('schema_risks.check_method_id','=', 'check_id')
->orWhereNull('schema_risks.check_method_id')
;
})
->on(function($join) use ($order_type_id) {
$join->where('schema_risks.order_type_id', $order_type_id)
->orWhereNull('schema_risks.order_type_id')
;
})
->on(function($join) use ($check_group_id) {
$join->where('schema_risks.check_group_id', $check_group_id)
->orWhereNull('schema_risks.check_group_id')
;
})
->on(function($join) use($filial_id){
$join->whereNull('schema_risks.filial_id');
if ($filial_id){
$join->orWhere('schema_risks.filial_id', $filial_id);
}
})
->on(function($join){
$join->whereNull('schema_risks.check_risk_level_id')
->orWhere('schema_risks.check_risk_level_id', '>' , CheckRiskLevel::CRL_NORMALLLY );
})
;
})

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