I need to get the data from a DB and match two columns: Key and name, but I cant get it to work, if I use AND on both conditions:
...where lower(items.key_) SIMILAR TO lower('memory.size')
and lower(items.name) SIMILAR TO lower('Memory Utilization%')
and history.clock > '2020-08-12 03:05:32'
the query doesnt work because when items.key is similar to memory.size, items.name will never be similar to "Memory Utilization", so I try to do it with OR:
...where lower(items.key_) SIMILAR TO lower('memory.size')
or lower(items.name) SIMILAR TO lower('Memory Utilization%')
and history.clock > '2020-08-12 03:05:32'
But it doesnt work either.
Any Ideas?
SIMILAR TO is not really the operator you want. You are using %, so that suggests LIKE:
where (lower(items.key_) like lower('memory.size') or
lower(items.name) like lower('Memory Utilization%')
) and history.clock > '2020-08-12 03:05:32'
Related
I'm looking for the Redisearch equivalent of the following query:
NOT (topic_id = '123' AND post_id <= '456')
I tried the following - it works but doesn't look like the most elegant solution:
-(#topic_id:[123 123] #post_id:[-inf 456])
topic_id and post_id are NUMERIC and SORTABLE
Thanks for your help!
Chris,
Your query looks perfectly valid, the only simplification I would apply is:
-(#topic_id:123 #post_id:[-inf 456])
To avoid repeating the 123 value. The other option would be to use DeMorgan's law and rewrite your NOT(A AND B) to (!A OR !B) but I don't think that would buy you anything, and in this case it would make it harder to read I think.
Please help as this is aquery with many parameters but when it said
" ((OrderProdDetails.DeliveryDate) Like IIf([Forms]![ReportCriteriaSelection]![NoDevDate]=-1,"*","")) " it should have included null values aswell but it is not if I am putting or Is null with this criteria then it is being applied for both conditions regardless of check box is checked or not. Please help getting the null values included when checkbox is checked.
Please have look on screenshots:
Query in design View
Criteria Selection Screen
Query:
SELECT OrderCustMain.OdrID, OrderCustMain.CustName, OrderCustMain.CustEmail,
OrderCustMain.OdrDate, OrderProdDetails.DeliveryDate, Date()-
[OrderCustMain]![OdrDate] AS [Days Past], OrderCustMain.OrderStatus,
OrderProdDetails.BrandName, OrderProdDetails.ModelName,
OrderProdDetails.Priority, SupplierDetails.SupEmail, OrderProdDetails.Status
FROM SupplierDetails INNER JOIN (OrderCustMain INNER JOIN OrderProdDetails
ON OrderCustMain.[OdrID] = OrderProdDetails.[OrdID]) ON
SupplierDetails.SupOrgName = OrderProdDetails.BrandName WHERE
(((OrderCustMain.OdrDate) Like IIf([Forms]![ReportCriteriaSelection]!
[NoStDate]=-1,"*","")) AND ((OrderProdDetails.DeliveryDate) Like
IIf([Forms]![ReportCriteriaSelection]![NoDevDate]=-1,"*","")) AND ((Date()-
[OrderCustMain]![OdrDate])>=[Forms]![ReportCriteriaSelection]![cboDaysPast])
AND ((OrderCustMain.OrderStatus) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus])) AND
((OrderProdDetails.BrandName) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritBrandName]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritBrandName]))) OR
(((OrderCustMain.OdrDate)>=[Forms]![ReportCriteriaSelection]!
[RepCritOdrStDate] And (OrderCustMain.OdrDate)<=[Forms]!
[ReportCriteriaSelection]![RepCritOdrEndDate]) AND
((OrderProdDetails.DeliveryDate)>=[Forms]![ReportCriteriaSelection]!
[RepCritDlvryStDate] And (OrderProdDetails.DeliveryDate)<=[Forms]!
[ReportCriteriaSelection]![RepCritDlvryEndDate]) AND ((Date()-
[OrderCustMain]![OdrDate])>=[Forms]![ReportCriteriaSelection]![cboDaysPast])
AND ((OrderCustMain.OrderStatus) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus])) AND
((OrderProdDetails.BrandName) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritBrandName]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritBrandName]))) OR (((OrderCustMain.OdrDate)
Like IIf([Forms]![ReportCriteriaSelection]![NoStDate]=-1,"*","")) AND
((OrderProdDetails.DeliveryDate)>=[Forms]![ReportCriteriaSelection]!
[RepCritDlvryStDate] And (OrderProdDetails.DeliveryDate)<=[Forms]!
[ReportCriteriaSelection]![RepCritDlvryEndDate]) AND ((Date()-
[OrderCustMain]![OdrDate])>=[Forms]![ReportCriteriaSelection]![cboDaysPast])
AND ((OrderCustMain.OrderStatus) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritOdrStatus])) AND
((OrderProdDetails.BrandName) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritBrandName]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritBrandName]))) OR
(((OrderCustMain.OdrDate)>=[Forms]![ReportCriteriaSelection]!
[RepCritOdrStDate] And (OrderCustMain.OdrDate)<=[Forms]!
[ReportCriteriaSelection]![RepCritOdrEndDate]) AND
((OrderProdDetails.DeliveryDate) Like IIf([Forms]![ReportCriteriaSelection]!
[NoDevDate]=-1,"*","")) AND ((Date()-[OrderCustMain]![OdrDate])>=[Forms]!
[ReportCriteriaSelection]![cboDaysPast]) AND ((OrderCustMain.OrderStatus)
Like IIf(IsNull([Forms]![ReportCriteriaSelection]![RepCritOdrStatus]),"*",
[Forms]![ReportCriteriaSelection]![RepCritOdrStatus])) AND
((OrderProdDetails.BrandName) Like IIf(IsNull([Forms]!
[ReportCriteriaSelection]![RepCritBrandName]),"*",[Forms]!
[ReportCriteriaSelection]![RepCritBrandName]))) ORDER BY
OrderCustMain.OdrID, OrderProdDetails.Priority;
The primary source for your trouble is that dates are not strings, so "Date Like some-string" will either fail or return unintended results.
You'll have to redesign this from scratch. Exactly how depends on the context.
Would something like this help?
WHERE Nz(OrderCustMain.OdrDate, #1/1/1900#) >= IIf([Forms]![ReportCriteriaSelection]!
[NoStDate]=-1,Nz(OrderCustMain.OdrDate, #1/1/1900#),[Forms]![ReportCriteriaSelection]!
[RepCritOdrStDate])
It might simplify the code.
How can I perform a query with multiple LIKE parameters?
For example, I have this string to search through:
"I like searching very much"
This is the code I currently use:
$searTerm = "like"
$this->db->or_like('list.description', $SearchTerm,'both');
But i want to search with 2 or 3 parameters. like this:
$searTerm = "like"
$searTerm1 = "much"
How can i perform this to get the same result?
You can simply repeat the like parameters on the active record. In your example you would do something like this:
$this->db->or_like('list.description', $searchTerm1);
$this->db->or_like('list.description', $searchTerm2);
$this->db->or_like('list.description', $searchTerm3);
...
This will just join each or_like with an AND in the WHERE clause.
Firstly, you need to define the array with like variables then, its very important to put the or_like statement above the where clause in order to make multiple 'OR' statements for like 'AND' the where clause.
Here is example:
$this->db->or_like(array('column_name1' => $k, 'column_name2' => $k))
$this->db->where($whereColumn, $whereValue)
You can use like group
$this->db->group_start()->like('column_name1', $value)
->or_group_start()
->like('column_name2', $value)
->group_end()
->group_end();
I have a DQL query like:
$em->createQuery("
SELECT r
FROM WeAdminBundle:FamilyRelation r
WHERE r.col like :query
")
Now I want to change "col" depending on various parameters. How can i achieve this with DQL since the normal setParameter doesn't work here.
You can use setParameter with DQL, as many examples are provided but for LIKE clauses, make sure the variable is wrapped in %.
$em->createQuery("
SELECT r
FROM WeAdminBundle:FamilyRelation r
WHERE r.col like :query
")->setParameters(array(
'query' => '%'.$foo.'%'
))
In short: you can't the way you want it.
To do it you'd need something like $dql->setColumn(array('variable_column' => 'some_column_name')) just as the bindColumn method from PDO, but there's no equivalent method (bindColum or setcolumn) in Doctrine.
For use of different parameter instead of col please see below example:
$var = "r.col";
Here you can change based on condition.
$em->createQuery("
SELECT r
FROM WeAdminBundle:FamilyRelation r
WHERE ".$var." like :query
")
please have a look it.
suppose we have a model in django defined as follows:
class Literal:
name = models.CharField(...)
...
Name field is not unique, and thus can have duplicate values. I need to accomplish the following task:
Select all rows from the model that have at least one duplicate value of the name field.
I know how to do it using plain SQL (may be not the best solution):
select * from literal where name IN (
select name from literal group by name having count((name)) > 1
);
So, is it possible to select this using django ORM? Or better SQL solution?
Try:
from django.db.models import Count
Literal.objects.values('name')
.annotate(Count('id'))
.order_by()
.filter(id__count__gt=1)
This is as close as you can get with Django. The problem is that this will return a ValuesQuerySet with only name and count. However, you can then use this to construct a regular QuerySet by feeding it back into another query:
dupes = Literal.objects.values('name')
.annotate(Count('id'))
.order_by()
.filter(id__count__gt=1)
Literal.objects.filter(name__in=[item['name'] for item in dupes])
This was rejected as an edit. So here it is as a better answer
dups = (
Literal.objects.values('name')
.annotate(count=Count('id'))
.values('name')
.order_by()
.filter(count__gt=1)
)
This will return a ValuesQuerySet with all of the duplicate names. However, you can then use this to construct a regular QuerySet by feeding it back into another query. The django ORM is smart enough to combine these into a single query:
Literal.objects.filter(name__in=dups)
The extra call to .values('name') after the annotate call looks a little strange. Without this, the subquery fails. The extra values tricks the ORM into only selecting the name column for the subquery.
try using aggregation
Literal.objects.values('name').annotate(name_count=Count('name')).exclude(name_count=1)
In case you use PostgreSQL, you can do something like this:
from django.contrib.postgres.aggregates import ArrayAgg
from django.db.models import Func, Value
duplicate_ids = (Literal.objects.values('name')
.annotate(ids=ArrayAgg('id'))
.annotate(c=Func('ids', Value(1), function='array_length'))
.filter(c__gt=1)
.annotate(ids=Func('ids', function='unnest'))
.values_list('ids', flat=True))
It results in this rather simple SQL query:
SELECT unnest(ARRAY_AGG("app_literal"."id")) AS "ids"
FROM "app_literal"
GROUP BY "app_literal"."name"
HAVING array_length(ARRAY_AGG("app_literal"."id"), 1) > 1
Ok, so for some reason none of the above worked for, it always returned <MultilingualQuerySet []>. I use the following, much easier to understand but not so elegant solution:
dupes = []
uniques = []
dupes_query = MyModel.objects.values_list('field', flat=True)
for dupe in set(dupes_query):
if not dupe in uniques:
uniques.append(dupe)
else:
dupes.append(dupe)
print(set(dupes))
If you want to result only names list but not objects, you can use the following query
repeated_names = Literal.objects.values('name').annotate(Count('id')).order_by().filter(id__count__gt=1).values_list('name', flat='true')