Example Tree Structure
Using MS SQL SERVER.
RELEVANT TABLE STRUCTURES
Table 1 core_person
person_id, first_name, last_name
1 Joe Doe
2 Jill Doe
Table 2 core_profile
profile_id, parent_profile_id, profile_name
1 NULL Main Campus
2 1 Adult
3 2 Usher
4 1 Children
5 4 Teacher
Table 3 core_profile_member
profile_id, person_id
3 1
5 2
5 1
DESIRED OUTPUT
Based on the sample data provided the desired output would be as seen below
person_id, first_name, last_name, Adults, Childrens
1 Joe Doe T T
2 Jill Doe F T
New to SQL - I understand how to build a tree structure but I have no idea how to search through specific parts of it.
I need to be able to search each of the tree branches and return a true/false for each "Department" for whether the individual is serving. So if the person_id appears in any tag under the Adults branch Return True. So far I was able to tweak a Tree Query I found online to specify the top level campus tag, but I have no idea how to recursively check through the individual records.
WITH Serving_Tree AS (
-- Anchor query: Get the root records
SELECT profile_id, parent_profile_id, profile_name
FROM core_profile
-- This parent_profile_id would be the Campus tag
WHERE parent_profile_id = '448'
UNION ALL
-- Recursive query: Get the records of the next level
SELECT child.profile_id, child.parent_profile_id, child.profile_name
FROM core_profile AS child
INNER JOIN Attrs AS parent
ON child.parent_profile_id = parent.profile_id
)
SELECT profile_id, parent_profile_id,profile_name
FROM Serving_Tree
Related
I need to create automatic weekly assignments of items to sites for my employees.
The items table items_bank looks like that(of course there will be a lot of items with few more languages) :
**item_id** **item_name** **language**
1 Jorge Garcia English
2 Chrissy Metz English
3 Nina Hagen German
4 Harald Glööckle German
5 Melissa Anderson French
6 Pauley Perrette French
My second table is the sites table :
**site_id** **site_name**
1 DR
2 LI
3 IG
I need to assign every week items to the sites with the following constraints :
For each site assign at least X items of English, Y items of German, and so on...
we want to create diversity - so we would like to avoid repeating the assignments of the 2 weeks before
I think we need to create another table in which we can save there the history of the last 2 weeks' assignments.
right now I managed to create an SQL query that assigns items but I don't know how to take the constraints under consideration this is what I create so far :
WITH numbered_tasks AS (
SELECT t.*, row_number() OVER (ORDER BY rand()) item_number, count(*) OVER () total_items
FROM item_bank t
),
numbered_employees AS (
SELECT e.*,row_number() OVER (ORDER BY rand()) site_number,
count(*) OVER () total_sites
FROM sites_bank e
)
SELECT nt.item_name,
ne.acronym
FROM numbered_tasks nt
INNER JOIN numbered_employees ne
ON ne.site_number-1 = mod(nt.item_number-1, ne.total_sites)
Expected results are for the example which says :
site_id=1 have to get 1 item with the English language
site_id=2 have to get 1 item with the German language
site_id=1 have to get 1 item with the French language
**item_id** **language** **Week_number** **site**
1 English 1 1
4 German 1 2
5 French 1 3
Any help will be appreciated!
I have a schema like the following that I want to index in SOLR. But I am not sure how to manage the one to many relationship between the first table: users and second table: address
ID NAME DESCRIPTION
-------------------------------------------------
1 NAME1 DEMO DESCRIPTION ONE
2 NAME2 DEMO DESCRIPTION TWO
3 NAME3 DEMO DESCRIPTION THREE
-------------------------------------------------
ADDR_ID USER_ID CITY STATE COUNTRY
-------------------------------------------------
1 1 cityv statev countryv
2 1 cityw statew countryw
3 2 cityx statex countryx
4 2 cityy statey countryy
5 3 cityz statez countryz
How to index users with multiple addresses?
Also how to search them by either users.name, address.city / address.state name?
Try Block Join with parent/child structure
I am investigating the benefits of Oracle Text search, and currently am looking at collecting search text data from multiple (related) tables and storing the data in the smaller table in a 1-to-many relationship.
Consider these 2 simple tables, house and inhabitants, and there are NEVER any uninhabited houses:
HOUSE
ID Address Search_Text
1 44 Some Road
2 31 Letsby Avenue
3 18 Moon Crescent
INHABITANT
ID House Name Nickname
1 1 Jane Doe Janey
2 1 John Doe JD
3 2 Jo Smythe Smithy
4 2 Percy Plum PC
5 3 Apollo Lander Moony
I want to to write SQL that updates the HOUSE.Search_Text column with text from INHABITANT. Now because this is a 1-to-many, the SQL needs to collate the data in INHABITANT for each matching row in house, and then combine the data (comma separated) and update the Search_Text field.
Once done, the Oracle Text search index on HOUSE.Search_Text will return me HOUSEs that match the search criteria, and I can look up INHABITANTs accordingly.
Of course, this is a very simplified example, I want to pick up data from many columns and Full Text Search across fields in both tables.
With the help of a colleague we've got:
select id, ADDRESS||'; '||Names||'; '||Nicknames as Search_Text
from house left join(
SELECT distinct house_id,
LISTAGG(NAME, ', ') WITHIN GROUP (ORDER BY NAME) OVER (PARTITION BY house_id) as Names,
LISTAGG(NICKNAME, ', ') WITHIN GROUP (ORDER BY NICKNAME) OVER (PARTITION BY house_id) as Nicknames
FROM INHABITANT)
i on house.id = i.house_id;
which returns:
1 44 Some Road; Jane Doe, John Doe; JD, Janey
2 31 Letsby Avenue; Jo Smythe, Percy Plum; PC, Smithy
3 18 Moon Crescent; Apollo Lander; Moony
Some questions:
Is this an efficient query to return this data? I'm slightly
concerned about the distinct.
Is this the right way to use Oracle Text search across multiple text fields?
How to update House.Search_Text with the results above? I think I need a correlated subquery, but can't quite work it out.
Would it be more efficient to create a new table containing House_ID and Search_Text only, rather than update House?
Right now I've got a Main table in which I am uploading data. Because the Main table has many different duplicates, I Append various data out of the Main table into other tables such as, username, phone number, and locations in order to keep things optimized. Once I have everything stripped down from the Main table, I then append what's left into a final optimized Main table. Before this happens though, I run a select query joining all the stripped tables with the original Main table in order to connect the IDs from each table, with the correct data. For example:
Original Main Table
--Name---------Number------Due Date-------Location-------Charges Monthly-----Charges Total--
John Smith 111-1111 4/3 Chicago 234.56 500.23
Todd Jones 222-2222 4/3 New York 174.34 323.56
John Smith 111-1111 4/3 Chicago 274.56 670.23
Bill James 333-3333 4/3 Orlando 100.00 100.00
This gets split into 3 tables (name, number, location) and then there is a date table with all the dates for the year:
Name Table Number Table Location Table Due Date Table
--ID---Name------ -ID--Number--------- ---ID---Location---- --Date---
1 John Smith 1 111-1111 1 Chicago 4/1
2 Todd Jones 2 222-2222 2 New York 4/2
3 Bill James 3 333-3333 3 Orlando 4/3
Before The Original table gets stripped, I run a select query that grabs the ID from the 3 new tables, and joins them based on the connection they have with the original Main table.
Select Output
--Name ID----Number ID---Location ID---Due Date--
1 1 1 4/3
2 2 2 4/3
1 1 1 4/3
3 3 3 4/3
My issue comes when I need to introduce a new table that isn't able to be tied into the Original Main Table. I have an inventory table that, much like the original Main table, has duplicates and needs to be optimized. I do this by creating a secondary table that takes all the duplicated devices out and put them in their own table, and then strips the username and number out and puts them into their tables. I would like to add the IDs from this new device table into the select output that I have above. Resulting in:
Select Output
--Name ID----Number ID---Location ID---Due Date--Device ID---
1 1 1 4/3 1
2 2 2 4/3 1
1 1 1 4/3 2
3 3 3 4/3 1
Unlike the previous tables, the device table has no relationship to the originalMain Table, which is what is causing me so much headache. I can't seem to find a way to make this happen...is there anyway to accomplish this?
Any two tables can be joined. A table represents an application relationship. In some versions (not the original) of Entity-Relationship Modelling (notice that the "R" in E-R stands for "(application) relationship"!) a foreign key is sometimes called a "relationship". You do not need other tables or FKs to join any two tables.
Explain, in terms of its column names and the values for those names, exactly when a row should turn up in the result. Maybe you want:
SELECT *
FROM the stripped-and-ID'd version of the Original AS o
JOIN the stripped-and-ID'd version of the Device AS d
USING NameID, NumberID, LocationID and DueDate
Ie
SELECT *
FROM the stripped-and-ID'd version of the Original AS o
JOIN the stripped-and-ID'd version of the Device AS d
ON o.NameID=d.NameId AND o.NumberID=d.NumberID
AND o.LocationID=d.LocationID AND o.DueDateID=d.DueDate.
Suppose p(a,...) is some statement parameterized by a,... .
If o holds the rows where o(NameID,NumberID,LocationID,DueDate) and d holds the rows where d(NameID,NumberID,LocationID,DueDate,DeviceID) then the above holds the rows where o(NameID, NumberID, LocationID, DueDate) AND d(NameID,NumberID,LocationID,DueDate,DeviceID). But you really have not explained what rows you want.
The only way to "join" tables that have no relation is by unioning them together:
select attribute1, attribute2, ... , attributeN
from table1
where <predicate>
union // or union all
select attribute1, attribute2, ... , attributeN
from table2
where <predicate>
the where clauses are obviously optional
EDIT
optionally you could join the tables together by stating ON true which will act like a cross product
I have a mySQL table called "User" containing multiple mixed values as this:
[user_id] [user_email] [birthday]
---------------------------------
1 x#xxx.com 01/01/1981
2 y#yyy.com 02/02/1982
3 z#zzz.com 03/03/1983
I have another table called "Name" which contains name of the user, but also of some movies like this:
[node_id] [name] [user_id]
----------------------------------
9 John Doe 1
10 Star Wars 90
11 Mike Smith 2
12 Mary Lord 3
13 Rocky III 91
Finally, I have a third table named "Vote" with which is a relationship between a user and some movies he likes.
[vote_id] [node_id] [user_id]
------------------------------
1 10 1
2 10 2
3 13 1
12 10 3
13 13 2
What I'm struggling to do is pull a query with twice the "name" value for two separate things: the name of the user, and the name of the movie he likes. Like this:
[user_id] [user_name] [Birthday] [movie_name]
-------------------------------------------------
1 John Doe 01/01/1981 Star Wars
2 Mike Smith 02/02/1982 Star Wars
1 John Doe 01/01/1981 Rocky III
3 Mary Lord 03/03/1983 Rocky III
2 Mike Smith 02/02/1982 Rocky III
SELECT user.id,
node.name,
user.birthday,
IF(node.type = "movie", node.name, "")
FROM user,
node
JOIN vote ON vote.user_id = user.user_id
WHERE user.id = node.id
I think I'm all mixed up... anyone can help please?
Assuming your schema is exactly what you posted above this should work verbatim.
Query
SELECT user.user_id,
node.name user_name,
user.birthday,
(select node.name from node where node_id = vote.node_id) as movie_name
FROM user
JOIN node ON user.user_id = node.user_id
JOIN vote ON vote.user_id = user.user_id
Result
You have got the database structure wrong. Store the user name in your first table "User"
I would strongly suggest that you store the user_name in the users table. With that change you can then have a much more simple query and a properly normalized schema.
New proposed schema.
users table
(Added user_name column)
[user_id][name][user_email][birthday]
1 name1 x#xxx.com 01/01/1981
2 name2 y#yyy.com 02/02/1982
3 name3 z#zzz.com 03/03/1983
nodes table (call this movies)
(removed user entries and the user_id column as you'll be using votes to link these to users)
[node_id] [name]
10 Star Wars
11 Mike Smith
12 Mary Lord
13 Rocky III
votes table (call this something like movies_users)
(removed the vote_id column as it's just a join table)
[node_id] [user_id]
10 1
10 2
13 1
10 3
13 2
Then your query should look something like this:
select users.user_id, users.name, users.birthday, nodes.name as movie_name
from users
join votes on users.id = votes.user_id
join nodes on votes.node_id = nodes.node_id
select user_id,user_name,birthday,name
from user,name,vote
where (and here you do all the joins like user_id from one table equals user_id from another table)
But here we have a problem which makes me impossible to understand how to write the correct code you have 2 fields in two different tables, user_name and name, you want to join the tables by this name? I don't understand.) I think you are mixing the movie names with the user names, reformulate the question please
I agree with the other answers that you would be better off if you moved the user name into the user table. However, if you are stuck with your current table structure, try this:
SELECT user.id,
uname.name user_name,
user.birthday,
movie.name movie_name
FROM user
JOIN node uname ON uname.user_id = user.user_id
JOIN vote ON vote.user_id = user.user_id
JOIN node movie ON vote.node_id = movie.id
(Assuming votes can only be cast for Movies, it should be unnecessary to blank out non-movies as these should never exist.)