Is there an elegant way to squash these two statements into one, similar to a plain SQL INSERT INTO t1 SELECT 'something', t2.x FROM t2 WHERE ...?:
const commentIds: Array<Pick<SectionComment, 'id'>> =
await this.articleRepository
.createQueryBuilder('article')
.select('sectionComment.id', 'id')
.innerJoin('article.sectionComments', 'sectionComment')
.where(
'article.vaultId = :vaultId and article.valueId = :valueId and sectionComment.userId = :userId',
{
valueId,
vaultId,
userId,
}
)
.getRawMany();
if (commentIds.length) {
await this.userSectionReadRepository
.createQueryBuilder()
.insert()
.into(UserSectionRead)
.values(
commentIds.map((sectionComment) => ({
userId,
commentId: sectionComment.id,
}))
)
.orIgnore()
.execute();
}
The problem is the values() method in InsertQueryBuilder does not accept a subquery function (qb: this) => string like the where() method does.
Related
I am new for using typeorm and this is the second time I am confused with typeorm, I have the following query :
SELECT t1.a,t1.b,t2.a
(SELECT TOP 1 t1.a
FROM table1 t1
WHERE t1.b = t2.a
ORDER BY t1.a DESC
) AS MaxT1
FROM Table1 t1
INNER JOIN Table2 t2 ON t1.a = t2.a
I tried this:
let query = await getManager()
.createQueryBuilder(Bid, 'bid')
.select([
'l.ID_anv_Lot',
'l.LotNumber',
'w.WineryName',
'bid.BidAmount',
'bid.ProxyBidAmount',
'er.ID_Contact'
])
.addSelect(Table1, t1)
.innerJoin(Lot, 'l', 'l.lotNumber = bid.lotNum AND l.paddleNumber = bid.paddleNumber')
but the result is all of the rows on table1
This Example may help you to perform sub query execution:
const posts = await connection.getRepository(Post)
.createQueryBuilder("post")
.where(qb => {
const subQuery = qb.subQuery()
.select("usr.name")
.from(User, "usr")
.where("usr.registered = :registered")
.getQuery();
return "post.title IN " + subQuery;
})
.setParameter("registered", true)
.orderBy("post.id")
.getMany();
You can use subselects in SELECT statements:
let query = await this.createQueryBuilder('t1')
.select()
.innnerJoin('t1.t2', 't2', 't1.a = t2.a')
.addSelect(subQuery => {
return subQuery
.select('_t1.a')
.from(Table1, '_t1')
.where('_t1.b = t2.a');
}, 'MaxT1')
.getRawMany()
You can find more here: https://orkhan.gitbook.io/typeorm/docs/select-query-builder
i am unable to fit my query into zf2 query, i can fit simple join query but i can not write for more complex sub queries.
please help me to do this.
SELECT `created_date` FROM `salesmodule_discussed_topic` dt WHERE dt.`meeting_id` IN(
SELECT ma.`meeting_id` FROM `salesmodule_meeting_agent` ma WHERE ma.`agent_id`=30547
)
public function getLastmeetingdate() {
$select = new Select();
$select->from(array('dt' => 'salesmodule_discussed_topic'));
$select->columns(array('created_date'));
$select->where(array('ma.`agent_id` => 30547));
$resultSet = $this->tableGateway->selectWith($select);
return $resultSet->buffer();
}
The previous example is bad because has an sql injections. You need make a subquery using Select.
public function getLastmeetingdate() {
$subQuery = new Select();
$subQuery->from(array('ma' => 'salesmodule_meeting_agent'));
$subQuery->columns(array('meeting_id'));
$subQuery->where(array('ma.agent_id' => 30547));
$select = new Select();
$select->from(array('dt' => 'salesmodule_discussed_topic'));
$select->columns(array('created_date'));
$select->where->in('dt.meeting_id', $subQuery);
return $this->tableGateway->selectWith($select);
}
public function fetchAllSubQuery($id = '') {
$columns = array("*");
$where = "main_booking_id IN (SELECT
b1.`main_booking_id`
FROM
`booking_sector` b1
WHERE b1.`connected_booking_id` = '$id' OR b1.`main_booking_id` = '$id') ";
$resultSet = $this->tableGateway->select(function (Select $select) use ($where,$columns) {
$select->where($where);
$select->columns($columns);
});
$resultSet->buffer();
// $resultSet->next();
return $resultSet;
}
I just want to return one column (per.cd_acao), so I tried something like:
$select->from(array('act' => 'tb_acao'))
->join(array('per' => 'tb_perfil_acao'),
'per.cd_acao = act.cd_acao',
array('cd_acao'),
$select::JOIN_INNER
);
but this is producing a query string like:
SELECT "act".*, "per"."cd_acao" AS "cd_acao" FROM "tb_acao" AS "act" INNER JOIN "tb_perfil_acao" AS "per" ON "per"."cd_acao" = "act"."cd_acao" WHERE "per"."sq_perfil" = '89'
it is bringing all columns from the first table, when I want none. What am I missing here?
Update
summarizing: When I don't inform 'columns' in a select object, it defaults to return all columns to me. But when I'm joining, I don't want any columns to be returned by the first table.
An empty array will suffice
$select->from(array('act' => 'tb_acao'))
->columns(array())
->join(array('per' => 'tb_perfil_acao'),
'per.cd_acao = act.cd_acao',
array('cd_acao'),
$select::JOIN_INNER
);
Try with this query
use Zend\Db\Sql\Sql;
protected $tableGateway;
public $adapter;
public function __construct(TableGateway $tableGateway)
{
$this->tableGateway = $tableGateway;
}
publice function getData(){
$adapter = $this->tableGateway->getAdapter();
$sql = new Sql($adapter);
$select = $sql->select();
$select->from('tb_acao')
->join('per'),
'per.cd_acao = act.cd_acao',
array('cd_acao'),
);
$statement = $sql->prepareStatementForSqlObject($select);
$results = $statement->execute();
return $results;
}
I'm new to ZF2.
How can I write a query like this?
SELECT * FROM users WHERE id = 1 AND status != 2
My code Model:
public function getUser($where = array())
{
$select = $this->sql->select();
$select->from(self::TABLE);
$select->where($where);
$select->order('name ASC');
return $statement->execute();
}
I am using: Zend\Db\Sql
Thanks.
Look at the docs here.
So $where can be a string or Closure, too.
Call it in your case like:
$user = $object->getUser('status != 2');
Oh, I missed the first condition:
$user = $object->getUser(array('id = 1', 'status != 2'));
EDIT:
You can for sure leave the = array() default value. I don't know why but I confused it with type hinting. (array $where)
public function getUser( where = array() ) {
$select = $this->sql->select();
$select->from(self::TABLE);
$select
->where->nest()
->equalTo( 'id' => where['id'] )
->or
->notEqualTo( 'status' => where['status'] )
->unnest();
$select->order('name ASC');
return $statement->execute();
}
use like this:
getUser( array(
'id' => 1,
'where' => 2,
) );
List<Post> list =
(
from c in db.TitleComments
join t in db.Titles on c.TitleId equals t.Id
join u in db.Users on c.UserId equals u.Id
where t.Id == _titleId && c.Date > time
orderby c.Date descending
select new Post { Username = u.Username, PostingDate = c.Date.ToString(), Data = c.Comment }
).ToList();
The code above causes exception on the convertion of date to string, PostingDate = c.Date.ToString(). Any ideas how to get around this?
Exception error:
{"LINQ to Entities does not recognize the method 'System.String ToString()' method, and this method cannot be translated into a store expression."}
linq is trying to convert date to string using sql but since there is no ToString() method in sql it can't convert it, this behavior is by design - Joakim
In other words, return the date itself and convert it to a string after it executes on SQL side:
(
select new { Username = u.Username,
PostingDate = c.Date
[...]
})
.ToList() // runs on SQL and returns to the application
.Select(o => // is not generating a SQL, it is running on the app
new Post { Username = o.Username,
PostingDate = o.PostingDate.ToString(),
[...]
})
You can remedy your problem by projecting into an anonymous type, and then at a later step project into Post after the data has already been returned from the DB.
(from ....
select new { /* stuff */, Date = c.Date })
.AsEnumerable()
.Select(p => new Post { /* stuff */, PostingDate = p.Date.ToString() })
.ToList();
However, given that you have a property called PostingDate, the original source being a date, I would recommend your revise your object to actually keep the value as a DateTime instead of a string.
I dont think this can be done in a direct way.
var list =
select new Post { Username = u.Username, PostingDate = SqlFunctions.StringConvert(c.Date), Data = c.Comment }
from
(from c in db.TitleComments
join t in db.Titles on c.TitleId equals t.Id
join u in db.Users on c.UserId equals u.Id
where t.Id == _titleId && c.Date > time
orderby c.Date descending).AsEnumerable()
).ToList();
Also with EF4 you can try something like this:
List<Post> list =
(
from c in db.TitleComments
join t in db.Titles on c.TitleId equals t.Id
join u in db.Users on c.UserId equals u.Id
where t.Id == _titleId && c.Date > time
orderby c.Date descending
select new Post { Username = u.Username, PostingDate = SqlFunctions.DateName(c.Date), Data = c.Comment }
).ToList();