So i have a database with some tables. Now i want a query that gets data from 3 tables. First lets see what the databases are
omschrijvingVoorraad
-ID 1
-userID 1
-omschrijvingID 6
-min 4
omschrijving
-ID 6
-omschrijving Cola (blikje 330ml)
voorraad
-ID 20
-userID 1
-omschrijvingID 6
-aantal 2
Now i want to make a query that will show the next line:
Cola (blikje 330ml) Aantal 2 minmaal 4
I searched around and came up with below but it is not working. It doesn't give an error but just an empty result
$queryOm="SELECT omschrijvingVoorraad.ID, omschrijvingID, omschrijving, vAantal, min
FROM omschrijvingVoorraad
LEFT JOIN omschrijving ON omschrijving.ID = omschrijvingVoorraad.omschrijvingID
INNER JOIN ( SELECT omschrijvingID vid, SUM( aantal ) vAantal
FROM voorraad WHERE userID='$userID' ) p ON vid = omschrijvingVoorraad.omschrijvingID
WHERE userID='$userID'
LIMIT $offset, $perPage";
Where offcourse the $offset and $perPage are being defined earlier in the code.
So can anyone tell me where I went wrong? What should I change to get the correct result?
Looking to your schema and your expected result seem you need this query
select a.ID, a.omschrijvingID, b.omschrijving, sum(c.aantal), a.min
from omschrijvingVoorraad as a
inner join omschrijving as b on a.omschrijvingID = b.ID
inner join voorraad as c on a.omschrijvingID = c.omschrijvingID
group by a.ID, a.omschrijvingID, b.omschrijving, a.min
Related
I am using the following query to get COUNT items from rows from the same table in LEFT JOIN.
This is the query:
SELECT
pac.id_sat as id_sat,
pac.nombre_contacto as nombre_contacto,
pac.centro_contacto as centro_contacto,
pac.tel_contacto as tel_contacto,
pac.horario_contacto as horario_contacto,
pac.email_contacto as email_contacto,
pac.num_factura as num_factura,
pac.fecha_factura as fecha_factura,
eq.nombre_equipo as modelo_equipo,
pac.num_serie as num_serie,
pac.tipo_incidencia as tipo_incidencia,
pac.cod_sat as cod_sat,
pac.estado as estado,
pac.clinica as clinica,
pac.fecha_sat as fecha_sat,
COUNT(medfotos.id_media_sat) as num_fotos,
COUNT(medvideos.id_media_sat) as num_videos
FROM tb_sat pac
LEFT JOIN tb_equipos eq ON pac.modelo_equipo = eq.id_equipo
LEFT JOIN tb_media_sat medfotos ON pac.cod_sat = medfotos.cod_sat AND medfotos.tipo = 1
LEFT JOIN tb_media_sat medvideos ON pac.cod_sat = medvideos.cod_sat AND medvideos.tipo = 2
WHERE pac.clinica = '".$idclinica."'
GROUP BY pac.id_sat
ORDER BY pac.fecha_sat DESC
My issue is that I am getting a wrong amount of COUNT items.
The real value for num_fotos should be 3 and for num_videos should be 2.
I am getting num_fotos = 6 and num_videos = 6.
EDIT
Table tb_sat
Table tb_media_sat
Sub-query will work better in your case like as follows:
SELECT pac.*, (SELECT COUNT(id_media_sat) FROM tb_media_sat WHERE cod_sat=pac.cod_sat AND tipo=1) AS num_fotos, (SELECT COUNT(id_media_sat) FROM tb_media_sat WHERE cod_sat=pac.cod_sat AND tipo=2) AS num_videos FROM tb_sat pac WHERE pac.clinica = '".$idclinica."' ORDER BY pac.fecha_sat DESC
Rest columns, please add yourself slowly slowly. I hope you will get correct output.
I have many to many relation
table: images
id imageName
1 pic01
2 pic02
3 pic03
table: imagesKeywords
imageId keywordId
1 2
1 3
1 4
2 3
3 1
3 4
3 2
table: keywords
id keywordName
1 car
2 tree
3 cat
4 phone
Each image has some keywords, and different images can have the same keyword.
I need to make a search for images , they have a specific keywordName's.
example-1: search for car and phone
the result should be : pic03
example-2: search for tree and phone
the result should be : pic01, pic03
You appear to want JOIN with GROUP BY Clause :
select i.imageName
from images i inner join
imagesKeywords ik
on ik.imageId = i.id inner join
keywords k
on k.id = ik.keywordId
where k.keywordName in ('car', 'phone')
group by i.imageName
having count(*) = 2;
As I understand you, this should work:
select i.imageName as name from keywords k
join imagesKeywords iK on k.id = iK.keywordId
join images i on iK.imageId = i.id
group by i.imageName;
One possible solution,
with subquery as
(select i1.imageName, k1.keywordName from keywords k1 join imagekeywords ik1 on k1.id=ik1.keywordId join images i1 on i1.id = ik1.imageId )
select a.imageName from subquery a join subquery b on a.imageName=b.imageName where a.keywordName ='car' and b.keywordName='phone';
So guys, trying to write a query to get the count of statuses where project_id = ? and statuses in 'New' from a couple of tables so let me break it down.
I have these three tables
Case_Status
id case_status
1 New
2 Failed
3. Accepted
Referral
id case_status_id project_id application_id
1 1 1 20
2 2 1 21
Project
id name
1 project1
2 project2
So this is my query
SELECT COUNT(referrals.id) AS count_all, case_statuses.case_status AS counted
FROM "case_statuses" LEFT OUTER JOIN "referrals" ON "referrals"."case_status_id" = "case_statuses"."id"
WHERE "case_statuses"."deleted_at" IS NULL AND (case_statuses.case_status IN ('New') AND referrals.project_id = 1)
GROUP BY case_statuses.case_status;
This is my result
count_all counted
1 New
1 Failed
But I am expecting this result instead
count_all counted
1 New
1 Failed
0 Accepted
Does anyone know what's wrong with my query that isnt showing count for all the case_statuses?
Thanks
Conditions on the second table (in a left join) should be in the on clause:
SELECT COUNT(r.id) AS count_all, cs.case_status AS counted
FROM case_statuses cs LEFT OUTER JOIN
referrals r
ON r.case_status_id = cs.id AND r.project_id = 1
WHERE cs.deleted_at IS NULL AND cs.case_status NOT IN ('New')
GROUP BY cs.case_status;
Otherwise, the WHERE clause turns the outer join into an inner join.
change your query like this
SELECT COUNT(referrals.id) AS count_all, case_statuses.case_status AS counted
FROM "case_statuses" LEFT JOIN "referrals" ON "referrals"."case_status_id" = "case_statuses"."id" AND referrals.project_id = 1
WHERE "case_statuses"."deleted_at" IS NULL AND case_statuses.case_status NOT IN ('New')
GROUP BY case_statuses.case_status;
Given your data and the expected result you just need to loose the WHERE clause.
SELECT COUNT(referrals.id) AS count_all, case_statuses.case_status AS counted
FROM case_statuses
LEFT OUTER JOIN referrals ON referrals.case_status_id = case_statuses.id
GROUP BY case_statuses.case_status;
See this fiddle for details.
I want to SELECT a field based on a ID value.
Products
PRODUCT_ID Name
19 Chair
20 Table
Product_fields
ID PRODUCT_ID TYPE DESCRIPTION
1 19 C White
2 19 S Modern
3 20 C Black
4 20 S Classic
I need a result like:
Product Type_C Type_S
Chair White Modern
Table Black Classic
I am able to produce this using two LEFT JOINs on the product_fields table but this slows down the query too much. Is there a better way?
Slows down the query how much? What is acceptable?
If you really don't want to use joins (you must have one join), then use views or nested queries. But I don't think they will be any faster, though you can give it a try.
See views at sqlfiddle
select p.PRODUCT_ID, p.Name, f.CDescription, f.SDescription
from Products p
join(
SELECT PRODUCT_ID, Max( CDescription ) as CDescription,
Max( SDescription ) as SDescription
FROM(
select PRODUCT_ID,
case Type when 'C' then Description end as CDescription,
case Type when 'S' then Description end as SDescription
from Fields
) x
group by PRODUCT_ID
) f
on f.PRODUCT_ID = p.PRODUCT_ID;
The complete statement is:
SELECT
NL.product_name,
PRD.product_sku AS product_sku,
CF.virtuemart_product_id AS virtuemart_product_id,
GROUP_CONCAT(distinct CFA.customsforall_value_name
ORDER BY CFA.customsforall_value_name ASC
separator ' | ' ) AS Name_exp_3,
ROUND((((prices.product_price * CALC.calc_value) / 100) + prices.product_price),
2) AS Prijs,
VMCF_L.custom_value AS latijn,
VMCF_T.custom_value AS THT
VMCF_B.custom_value AS Batch
from j25_virtuemart_products AS PRD
LEFT join j25_virtuemart_product_custom_plg_customsforall AS CF ON CF.virtuemart_product_id = PRD.virtuemart_product_id
join j25_virtuemart_product_prices AS prices ON PRD.virtuemart_product_id = prices.virtuemart_product_id
join j25_virtuemart_calcs AS CALC ON prices.product_tax_id = CALC.virtuemart_calc_id
join j25_virtuemart_products_nl_nl AS NL ON NL.virtuemart_product_id = PRD.virtuemart_product_id
LEFT join j25_virtuemart_product_customfields AS VMCF ON VMCF.virtuemart_product_id = PRD.virtuemart_product_id
LEFT join j25_virtuemart_custom_plg_customsforall_values AS CFA ON CFA.customsforall_value_id = CF.customsforall_value_id
LEFT JOIN j25_virtuemart_product_customfields AS VMCF_L ON VMCF.virtuemart_product_id = VMCF_L.virtuemart_product_id AND VMCF_L.virtuemart_custom_id = 16
LEFT JOIN j25_virtuemart_product_customfields AS VMCF_T ON VMCF.virtuemart_product_id = VMCF_T.virtuemart_product_id AND VMCF_T.virtuemart_custom_id = 3
LEFT JOIN j25_virtuemart_product_customfields AS VMCF_B ON VMCF.virtuemart_product_id = VMCF_B.virtuemart_product_id AND VMCF_B.virtuemart_custom_id = 18
WHERE
PRD.product_sku like '02.%'
group by PRD.virtuemart_product_id
order by NL.product_name;
Where the three SELECT results named 'Latijn', 'THT', and 'Batch' are the ones which I compared earlier as the black/white and classic/modern values.
Hope this makes any sense.
As you can see this involves a Virtuemart installation, so I cannot fiddle about to much with the schema.
When I exclude the bottom 3 JOINS and there related FIELDS, the query takes approx 0,5 seconds. With the JOINS and FIELDS included, the query takes almost 19 seconds.
I have created a view from this complete query which I query from my labeling application.
Thanks everyone! With your input I created:
select
NL.product_nameASproduct_name,
PRD.product_skuASproduct_sku,
CF.virtuemart_product_idASvirtuemart_product_id,
group_concat(distinctCFA.customsforall_value_name
order byCFA.customsforall_value_nameASC
separator ' | ') ASName_exp_3,
round((((prices.product_price*CALC.calc_value) / 100) +prices.product_price),
2) ASPrijs,
f.LatijnASLatijn,
f.THTASTHT,
f.BatchASBatch
from
(((((((j25_virtuemart_productsPRD
left joinj25_virtuemart_product_custom_plg_customsforallCFON ((CF.virtuemart_product_id=PRD.virtuemart_product_id)))
joinj25_virtuemart_product_pricespricesON ((PRD.virtuemart_product_id=prices.virtuemart_product_id)))
joinj25_virtuemart_calcsCALCON ((prices.product_tax_id=CALC.virtuemart_calc_id)))
joinj25_virtuemart_products_nl_nlNLON ((NL.virtuemart_product_id=PRD.virtuemart_product_id)))
left joinj25_virtuemart_product_customfieldsVMCFON ((VMCF.virtuemart_product_id=PRD.virtuemart_product_id)))
left joinj25_virtuemart_custom_plg_customsforall_valuesCFAON ((CFA.customsforall_value_id=CF.customsforall_value_id)))
left joinvw_batch_Latijn_THT_groupedfON ((f.virtuemart_product_id=PRD.virtuemart_product_id)))
where
(PRD.product_skulike '02.%')
group byPRD.virtuemart_product_id
order byNL.product_name``
Which takes 1.4 seconds to execute, a whole lot faster then the 19 seconds I started with.
(The example that follows is hypothetical, but illustrates the concept).
Using MySQL, say I have 2 tables:
userFromID userToId moreInfo
1 2 cat
1 3 dog
4 1 bear
3 4 fish
And...
userId someInfo addlInfo
1 m 32
2 f 33
3 m 25
4 f 28
And I want to query for a user id, and get back joined info from both tables for all users that share a relationship with user1.
assume that the first table has something like alter table thatFirstTable add unique index(userFromId, userToId) so there won't be any duplicates - each relationship between the two ids will be unique.
it doesn't matter who's the "from" or "to"
so the desired result would be something like this, if queried for relationships with user id: 1
userId moreInfo someInfo addlInfo
2 cat f 33
3 dog m 25
4 bear f 28
Thanks.
/EDIT this "works" but I suspect there's a better way?
SELECT * FROM users JOIN friends ON friends.userFrom = users.id OR friends.userTo = users.id WHERE users.id != 1 AND friends.userFrom = 1 OR friends.userTo = 1
/EDIT2 - I updated the sample output to better reflect the goal
try this query::
select tbl2.userid,tbl1.moreinfo,
tbl2.someinfo,tbl2.addinfo
from tbl1 join tbl2
on (tbl1.usertoid = tbl2.userid and tbl1.userfromid = 1)
You should just join the tables with the query below.
select u.userId, f.moreInfo, u.someInfo, u.addlInfo
from users AS u INNER JOIN friends AS f ON u.userId = f.UserToId
where f.userFrom = 1
Try this. Tested and 100% working
select a.userToID, a.moreInfo, b.someInfo, b.addInfo from tbl1 a
left outer join
tbl2 b on a.userToID = b.userId
where a.userFromID = 1;