So I basicly have a database that looks like this:
card_types
id description price
1 Card1 1.00
2 Card2 2.00
3 Card3 3.00
card_occasions
id occasion
1 birthday
2 graduation
3 thank you
4 other
type_occasions
ID TypeID OccasionID
1 1 1
2 1 2
3 1 4
4 2 3
I am trying to do an inner join using WHERE card_type.ID = 1 resulting in a similar output but I have no idea where to begin.
Example output:
card_occasion.ID card_occasions.Name
1 birthday
2 graduation
4 other
Any help would be appreciated.
Thanks.
Since type_occasions already owns the typeid, you don't need to join the type table.
SELECT o.id, o.occassion
FROM card_occasions o
INNER JOIN type_occasions t ON t.occassionid = o.id
WHERE t.typeid = 1
You begin with the table where you want values. After Join the table you need to make the relation.
SELECT card_occasions.id, card_occasions.occasion
FROM card_occasion co
INNER JOIN type_occasions to ON (to.OccasionID = co.id)
^ the relation between two table
WHERE ct.ID = 1
SELECT A.id,A.occasion FROM card_occasions A JOIN type_occasions B ON B.OccasionID= A.id AND B.TypeID=1
And if you really want to link all three tables for reason we don't see here you may use this method. This starts linking from the type_occasion table to appropriate "basic data" tables.
Select
typeo.OccasionID, co.occasion as Name
From type_occasion typeo
JOIN card_type ct ON (typeo.TypeID=ct.id)
JOIN card_occasion co ON (typeo.OccasionID=co.id)
Where
typeo.TypeID=1
-- ct.id=1
Related
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';
I have 2 tables
TBL 1: property TBL 2: property_detail
--------------------- --------------------------------------
Id Name status property_id param value
--------------------- --------------------------------------
1 X 1 1 parking two-wheeler
2 Y 1 1 furnishing furnished
3 Z 0 2 parking car-parking
4 A 1 2 furnishing semi-furnished
5 B 1 3 furnishing furnished
6 C 0 4 parking car-parking
"property_id" column in "property_detail" is foreign key of "Id" column in "property"
I want search result for status=1 and (param="parking" and value="car-parking") and (param="furnishing" and value="furnished")
From above Example table, the result will be
Result
-------------
id name
-------------
2 Y
How to achieve this?
you can get your desired result set by using join twice with details table
select p.*
from property p
join property_detail d on (p.Id = d.property_id)
join property_detail d1 on (p.Id = d1.property_id)
where p.status=1
and d.param='parking' and d.value='car-parking'
and d1.param='furnishing' and d1.value='semi-furnished';
Another way you can also use below query using having clause and sum function
select p.*
from property p
join property_detail d on (p.Id = d.property_id)
where p.status=1
group by p.Id
having sum(param="parking" and value="car-parking")
and sum(param="furnishing" and value="semi-furnished")
DEMO
SELECT property.id, property.name
FROM property INNER JOIN property_detail
ON property.id = property_detail.property_id
WHERE
(`param`="parking" AND `value`="car-parking")
AND
(`param`="furnishing" AND `value`="furnished")
AND status = 1;
can you try this one? I'm not sure though.. but it'll give you an idea.
(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;
I'm trying to get multiple attributes (e.g bedrooms, bathrooms, etc) from a few tables yes I can only seem to get one attribute with my current query. What am I missing?
What I am ultimately trying to find is property_id's with 2 bathrooms and 2 bedrooms. In this case, my desired results are property id's 1 and 4.
Here's my example on sqlfiddle
Example tables:
property
--------
id
1
2
3
4
attribute
---------
id name
1 bedrooms
2 bathrooms
attribute_value
---------------------
id attribute_id value
1 1 1
2 1 2
3 1 3
4 2 1
5 2 2
6 2 3
property_attributes
------------------------------
property_id attribute_value_id
1 2
1 5
2 2
2 4
3 1
3 4
4 2
4 5
This query can produce the results I want if I only want to see a query based on single attribute:
SELECT p.property_id
FROM property p
INNER JOIN property_attribute pa ON p.property_id = pa.property_id
INNER JOIN property_area pc ON p.property_id = pc.property_id
WHERE pa.attribute_value_id
IN (
SELECT av.attribute_value_id
FROM attribute_value av
INNER JOIN attribute a ON av.attribute_id = a.attribute_id
WHERE a.name like 'bedrooms' AND av.value like '2')
But what must I do to get results with more attributes (e.g. WHERE a.name like 'bathrooms' AND av.value like '2')? If I add another subquery in the main where clause, it doesn't return any results.
/// EDIT ///
here is the solution that worked for me if anyone else winds up in such a situation:
SELECT p.property_id
FROM property p
INNER JOIN property_attribute pa ON p.property_id = pa.property_id
INNER JOIN property_attribute pa2 ON p.property_id = pa2.property_id
INNER JOIN property_attribute pa3 ON p.property_id = pa3.property_id
WHERE pa.attribute_value_id = 2
AND pa2.attribute_value_id = 5
AND pa3.attribute_value_id = 7
This makes usage of a self-join.
You have an awful lot of indirection in your schema. Is there any particular point why you need the property_attribute table? Do you expect a single attribute value to be shared by many properties?
In any case, here is the query for you. Very much in the spirit of the two possible duplicates I mentioned above.
SELECT property.property_id,
bedrooms.value AS bedrooms,
bathrooms.value AS bathrooms
FROM property,
attribute AS bedrooms_attr,
attribute_value AS bedrooms,
property_attribute AS bedrooms_prop,
attribute AS bathrooms_attr,
attribute_value AS bathrooms,
property_attribute AS bathrooms_prop
WHERE bedrooms_attr.name = 'bedrooms'
AND bedrooms.attribute_id = bedrooms_attr.attribute_id
AND bedrooms.attribute_value_id = bedrooms_prop.attribute_value_id
AND bedrooms_prop.property_id = property.property_id
AND bedrooms.value = 2
AND bathrooms_attr.name = 'bathrooms'
AND bathrooms.attribute_id = bathrooms_attr.attribute_id
AND bathrooms.attribute_value_id = bathrooms_prop.attribute_value_id
AND bathrooms_prop.property_id = property.property_id
AND bathrooms.value = 2
Thanks for providing a fiddle with data to play with.
I have three tables in mySQL:
TABLE:CollectionAttributeValues
cID
akID
avID
TABLE: atDefault
avID
value
TABLE: CollectionVersions
cID
cvName
Looks Like
CollectionVersions
cID cvName
1 Billete
5 Tony
atDefault
avID value
1 B.B
3 T.T
CollectionAttributeValues
cID akID avID
1 29 1
5 29 3
I need to take all the values (the column named values) in atDefault"
and put it into cvName in CollectionVersions
WHERE akID = 29 in CollectionAttributeValues
Basically, take "Billette" and change it to "B.B". AND also take "Tony" and change it to "TT".
So far I came up with this
SELECT value
FROM `atDefault` AS d
LEFT JOIN `CollectionAttributeValues` AS v ON d.avID = v.avID
WHERE v.akID =29
But I don't know how to insert the resulting values into the "cvName" column in CollectionVersions...
To UPDATE all the columns of the table CollectionVersions with the data that you get form the query. Try the below query -
UPDATE CollectionVersions cv
SET cvName =
(SELECT value
FROM `atDefault` AS d
LEFT JOIN `CollectionAttributeValues` AS v ON d.avID = v.avID
WHERE v.akID =29
AND cv.cID = v.cID)