Using SQL to Copy specific content based on conditions of other colums - sql

I need to use either SQL or Excel to copy the picture columns data of the other corresponding picture values for the SAME model and color when the field is NULL.
For this picture shown I need D-2 and D-4 to also say A-2.jpg instead of NULL
(It's the same A model and the color is red so copy the existing A model and red picture that's there). I need D-7 to either copy D-5 or D-6's picture value (A-4.jpg or A-5.jpg would work). So on.... If there are not particular pictures for that group (ie. model B and Black) then it can be left as NULL.
I'm trying to use group by functions and nested selects, but I am getting nowhere with this.


If you are using MS SQL Server, you can use a self join to update the table.
update r set r.picture = l.picture
from Item l
join Item r on l.model = r.model and l.color=r.color
where
l.picture is not null and
r.picture is null


Assuming your table is called "products" you might be able to do something like this:
UPDATE products p SET picture = (
SELECT picture
FROM products p2
WHERE p2.model = p.model
AND p2.color = p.model
)
WHERE p.picture IS NULL
The rules about update commands vary between different Database systems. Let us know which database you are using if the above query does not work.

Related

Microsoft SQL Server generates two select queries and puts data in separate columns

I am looking for a query that separate the data with the condition WHERE in the same output but in separates columns.
Example: I have the table Product_2:
I have two separates queries (to separate the products by Produt_Tag):
SELECT
Product_Mark AS "PIT-10_Product_Mark",
Product_Model AS "PIT-10_Product_Model"
FROM Product_2
WHERE Product_Tag = 'PIT-10';
SELECT
Product_Mark AS "PIT-11_Product_Mark",
Product_Model AS "PIT-11_Product_Model"
FROM Product_2
WHERE Product_Tag = 'PIT-11';
And I get this output:
But I need the output to be like this:
Can someone tell me how I need to modify my query to have the four columns in the same table/ output?
Thank you
I forgot to tell that in the data I Have the “Porduct_Mark” that only appears one time. (in reality the data in “Product_Mark” is the name of the place where the instrument is located and one place can have one or two instruments “Product_Model”. At the end I’m looking for the result show in the image here below. I tried to use LEFT JOIN but that don’t work.
here is the new table "Product_2"
Result that I'm looking for:
Luis Ardila

I am assuming Product_PK is the primary key for the table and the repeated value 1002 shown in the question is a mistake. Considering this assumption, you can get the result set using self join as below.
SELECT pa.Product_Mark AS "PIT-10_Product_Mark", pa.Product_Model AS "PIT-10_Product_Model",
pb.Product_Mark AS "PIT-11_Product_Mark", pb.Product_Model AS "PIT-11_Product_Model"
FROM Product_2 pa
INNER JOIN Product_2 pb
ON pa.Product_Mark = pb.Product_Mark
WHERE pa.product_pk != pb.product_pk
and pa.Product_Tag = 'PIT-10'
and pb.Product_Tag = 'PIT-11';
verified same in https://dbfiddle.uk/NiOO8zc1

How do I run a SQL query against 2 views that are linked by an ID but has different column names?

I currently have 2 views that house some data.
View1: includes patientsPID and their billing/invoice information (high-level)
View2: includes patientsCID and their respective line items for their billing invoice information (granularity of View1)
I am trying to run a query where I will be able to validate some data. E.g. -> I want to see patientsPID = 1 and see the total amount paid and join it to View2 to see in more details on the invoice.
expected results
Thank you.

You need to join View1 and View2:
select v1.patientspid, v1.invoiceheader, v2.invoiceline, v2.amount
from view1 v1 inner join view2 v2
on v1.patientspid = v2.patientscid
order by v1.patientspid
If you want to get the results for a patientspid use
where v1.patientspid = 1
and no order by

In this case both PatientsPID and PatientsCID act as your Key. The column names don't have to be the same as long as the data contained in them are linked (Same Data).
Select View1.PatientsPID, View1.AmountPaid, View2.[SomeColumnName]
From View1 inner join View2 on View1.PatientsPID = View2.PatientsCID
Where View1.PatientsPID = 1
Use Join in the From line and you have to set which columns are equal between the two tables. These columns have to contain the same data in order to be able to link. Whatever column names you want to select just place the table name in front of it as show above, this prevents errors in the event of an ambiguous column name

Way to combine filtered results using LIKE

I have a many to many relationship between people and some electronic codes. The table with the codes has the code itself, and a text description of the code. A typical result set from a query might be (there are many codes that contain "broken" so I feel like it's better to search the text description rather than add a bunch of ORs for every code.)
id# text of code
1234 broken laptop
1234 broken mouse
Currently the best way for me to get a result set like this is to use the LIKE%broken% filter. Without changing the text description, is there any way I can return only one instance of a code with broken? So in the example above the query would only return 1234 and broken mouse OR broken laptop. In this scenario it doesn't matter which is returned, all I'm looking for is the presence of "broken" in any of the text descriptions of that person's codes.
My solution at the moment is to create a view that would return
`id# text of code
1234 broken laptop
1234 broken mouse`
and using SELECT DISTINCT ID# while querying the view to get only one instance of each.
EDIT ACTUALLY QUERY
SELECT tblVisits.kha_id, tblICD.descrip, min(tblICD.Descrip) as expr1
FROM tblVisits inner join
icd_jxn on tblVisits.kha_id = icd_jxn.kha)id inner join tblICD.icd_fk=tblICD.ICD_ID
group by tblVisits.kha_id, tblicd.descrip
having (tblICD.descrip like n'%broken%')

You could use the below query to SELECT the MIN code. This will ensure only text per id.
SELECT t.id, MIN(t.textofcode) as textofcode
FROM table t
WHERE t.textofcode LIKE '%broken%'
GROUP BY t.id
Updated Actual Query:
SELECT tblVisits.kha_id,
MIN(tblICD.Descrip)
FROM tblVisits
INNER JOIN icd_jxn ON tblVisits.kha_id = icd_jxn.kha)id
INNER JOIN tblicd ON icd_jxn.icd_fk = tbl.icd_id
WHERE tblICD.descrip like n'%broken%'
GROUP BY tblVisits.kha_id

Using a constant just once, in a SQL request

I am performing this request, and I get the results I want:
UPDATE sales
SET color = (
SELECT color
FROM master
WHERE productcode = "XJ2"
)
WHERE productcode = "XJ2";
But now I use a BI transformation tool where I can enter the constant ("XJ2" here) only once.
So I have to find an SQL request that does the same, but uses "XJ2" just once.
I feel some join is what I need, but I can't find a way to make it work (shame).
The point of this request is to retrieve the color of a product from a master table, to create a fully detailed table that I will use for data mining. Using MySQL, if that matters.

UPDATE sales s
INNER JOIN master m ON (m.ProductCode = s.ProductCode)
SET color= m.color
WHERE s.productcode="XJ2"

UPDATE Sales
SET color = m.color
FROM Sales S
INNER JOIN Master M
ON M.ProductCode = S.ProductCode
WHERE S.ProductCode = 'XJ2'

Trying to use table aliases in SQL

I'm a graphic designer trying my best to understand table aliases, but it's not working.
Here's what I have so far:
SELECT colours.colourid AS colourid1,
combinations.manufacturercolourid AS colourmanid1,
colours.colourname AS colourname1,
colours.colourhex AS colourhex1,
combinations.qecolourid2 AS colouridqe2,
colours.colourid AS colourid2,
colours.colourname AS colourname2,
colours.colourhex AS colourhex2,
colours.colourid AS colourid3,
combinations.qecolourid3 AS colouridqe3,
colours.colourname AS colourname3,
colours.colourhex AS colourhex3,
colours.colourid AS colourid4,
combinations.qecolourid4 AS colouridqe4,
colours.colourname AS colourname4,
colours.colourhex AS colourhex4,
combinations.coloursupplierid
FROM combinations
INNER JOIN colours
ON colours.colourid = combinations.manufacturercolourid;
Now, the idea is that in the colours lookup table, the id will pull the colour code, hex and name from the lookup table so that I can pull the colour code, hex and name for the 4 colours that I'm looking for. I can get this to work, but it only pulls up the first name, code and hex and I'm just not seeing what I'm doing wrong.

Your problem is that you are linking in only a single record from the colours table because you only have a single JOIN in your SQL. That record will match the color specified by manufacturer_colour_id.
You may also have a further problem in that your combinations table does not appear to be in proper normal form (although I could be wrong, not knowing the actual nature of the data you're trying to represent).
If I understand your problem correctly, the solution (using your current table structures) will be something more like:
SELECT C1.colourid AS colourid1,
CMB.manufacturercolourid AS colourmanid1,
C1.colourname AS colourname1,
C1.colourhex AS colourhex1,
CMB.qecolourid2 AS colouridqe2,
C2.colourid AS colourid2,
C2.colourname AS colourname2,
C2.colourhex AS colourhex2,
C3.colourid AS colourid3,
CMB.qecolourid3 AS colouridqe3,
C3.colourname AS colourname3,
C3.colourhex AS colourhex3,
C4.colourid AS colourid4,
CMB.qecolourid4 AS colouridqe4,
C4.colourname AS colourname4,
C4.colourhex AS colourhex4,
CMB.coloursupplierid
FROM combinations CMB
LEFT OUTER JOIN colours C1
ON C1.colourid = CMB.manufacturercolourid
LEFT OUTER JOIN colours C2
ON C2.colourid = CMB.qecolourid2
LEFT OUTER JOIN colours C3
ON C3.colourid = CMB.qecolourid3
LEFT OUTER JOIN colours C4
ON C4.colourid = CMB.qecolourid4
What's happening here is that I'm linking the colours table four times, once for each of the colour_id fields in the combinations table. To do so, I need to alias the table name each time so that I know which of the four possible instances of colours to use in the list of returned columns. Also, I'm using OUTER JOINs in the event that one or more colour_id columns might be empty. If that happened with INNER JOINs, the entire row would drop out of the result set.

You can use table aliases to reduce the amount of typing needed - by adding something like this:
SELECT
cl.colourid AS colourid1,
cb.manufacturercolourid AS colourmanid1,
cl.colourname AS colourname1,
... and so on.....
FROM
combinations AS cb
INNER JOIN
colours AS cl ON cl.colourid = cb.manufacturercolourid;
By defining a table alias cb for your table combinations, you can use that shorter alias in your SELECT and other parts of your statement, instead of having to always spell out the entire table name.
But your problem really is in the JOIN - you're only joining once, yet you expect to get four results back....
What you need to do is something like this:
SELECT
col1.colourid AS colourid1,
cb.manufacturercolourid AS colourmanid1,
col1.colourname AS colourname1,
col1.colourhex AS colourhex1,
cb.qecolourid2 AS colouridqe2,
col2.colourid AS colourid2,
col2.colourname AS colourname2,
col2.colourhex AS colourhex2,
col2.colourid AS colourid3,
cb.qecolourid3 AS colouridqe3,
col3.colourname AS colourname3,
col3.colourhex AS colourhex3,
col3.colourid AS colourid4,
cb.qecolourid4 AS colouridqe4,
col4.colourname AS colourname4,
col4.colourhex AS colourhex4,
cb.coloursupplierid
FROM
combinations cb
INNER JOIN colours AS col1 ON col1.colourid = cb.manufacturercolourid
INNER JOIN colours AS col2 ON col2.colourid = cb.qecolourid2
INNER JOIN colours AS col3 ON col3.colourid = cb.qecolourid3
INNER JOIN colours AS col4 ON col4.colourid = cb.qecolourid4

This is not an exhaustive answer, but your problem has to do with your how you are using the JOINs. Table and column aliases do not affect the output result set.
You are selecting the same field names four times, and that is why you are getting strange results.

These are all great, but for some reason when I try to use them, I get an error in the page:
[Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression
I think I understand how to use the table aliases now, but for some reason, even though I'm sure it should work, the page doesn't like it.