I have two tables. A and B.
Table Structure:
A (A_ID, A_AMT, A_QTY)
B (B_ID, B_AMT, B_QTY)
I need to find IDs not with the same AMT and QTY values.
For example: If A_AMT is 5 and B_AMT is 10 then I need to find the difference between them as 5 and return them.
Can someone help me with this.
Note: Both the tables have the same IDs. A_ID = B_ID.
Try this:
SELECT A.A_AMT,
B.B_AMT,
A.A_AMT - B.B_AMT AS DIFF_AMT,
A.A_QTY,
B.B_QTY,
A.A_QTY - B.B_QTY AS DIFF_QTY
FROM A INNER JOIN
B ON A.A_ID = B.B_ID
WHERE A.A_AMT <> B.B_AMT OR A.A_QTY <> B.B_QTY
Related
I have two tables, playgrounds and maintenance, which are linked with a foreign key. Whenever there is a maintenance on a playground, it will be saved in the table and connected to the respective playground.
Table A (playgrounds):
playground_number
Table B (maintenance):
playground_number (foreign key),
maintenance_type (3 different types),
date
What I now want is to retrieve all the playgrounds on which a certain type of maintenance has NOT been performed yet IN a certain year. For instance all playgrounds that do not have a maintenance_type = 1 in the year 2022 connected yet, although there could be multiple other maintenance_types because they are more frequent.
This is what I have tried (pseudo):
SELECT DISTINCT A.playground_number
FROM table A
JOIN table B ON A.playground_number = B.playground_number (FK)
WHERE NOT EXISTS (SELECT B.maintenance_type FROM table B
WHERE B.maintenance_type = 1 AND year(B.date) = 2022
However this will return nothing as soon as there is only one entry with maintenance_type 1 within the table.
I am struggling with this query for a while, so would appreciate some thoughts :) Many thanks.
You need to correlate the exists subquery to the outer B table. Also, you don't even need the join.
SELECT DISTINCT a.playground_number
FROM table_a a
WHERE NOT EXISTS (
SELECT 1
FROM table_b b
WHERE b.playground_number = a.playground_number AND
b.maintenance_type = 1 AND
YEAR(b.date) = 2022
);
Please consider this. I don't think you need JOIN.
SELECT DISTINCT A.playground_number
FROM table A
WHERE A.playground_number NOT IN (SELECT B.playground_number FROM table B
WHERE B.maintenance_type = 1 AND year(B.date) = 2022)
Please let me know if I understand it incorrectly.
I'm still learning SQL, so this may just be my ignorance or inability to express in a search what I'm looking for. I've spent roughly an hour searching for some variation of the title (both here and general searches on Google). I apologize, I apparently also don't know how to format here. I'll try to clean it up now that I've posted.
I have a database of customer data that I did not design. In the GUI, there are multiple tabs, and it seems like each tab earned it's own table. The tables are linked together with a field called RecordID. In one of the tables is the Customer Data tab. The way that it's organized is that a single customer record from table A can have multiple rows in table B. I only want data from column B in table B is "CompanyA" and if column A in table B = 1. Sample data is below.
Expected output:
CardNumber LastName FirstName CustomerID DataItem
------------------------------------------------------
32154 Clapton Eric 181212 CompanyA
Table A:
RecordID CardNumber LastName FirstName CustomerID
---------------------------------------------------------------
1 12345 Smith John 190201
2 12346 Jones Sandy 190202
3 23456 Petty Tom 190203
4 32154 Clapton Eric 181212
5 14728 Tyler Steven 180225
Table B:
RecordID DataID DataItem
--------------------------------
1 0 CompanyA
1 1 Yes
1 2 No
1 3 Revoked
1 4 NULL
1 5 CompanyB
2 0 CompanyB
2 1 Yes
2 2 No
2 3 NULL
2 4 24-54A
2 5 CompanyC
3 0 CompanyA
3 1 No
3 2 No
3 3 NULL
3 4 68-69B
3 5 NULL
4 0 CompanyA
4 1 Yes
4 2 Yes
5 0 CompanyB
5 1 No
5 2 No
5 5 CompanyA
The concept you're looking for is a JOIN. In this case specifically you need an INNER JOIN. Joins connects two tables together based on criteria you specify (such as matching values in fields) and merges the result into one table in the output.
Here's an example to suit your scenario:
SELECT
A.CardNumber,
A.LastName,
A.FirstName,
A.CustomerID,
B.DataItem
FROM
TableA A
INNER JOIN TableB B -- join tableB onto tableA
ON A.RecordID = B.RecordID -- in the ON clause you specify criteria by you match the fields
WHERE
B.columnA = 'CompanyA'
AND B.columnB = 1
Here's the relevant SQL Server Documentation
Also I'd advise you to potentially take a comprehensive introductory SQL tutorial, and/or find a book. A good one will introduce all of the basic, key concepts such as this to you in a logical way, then you're not grasping in the dark trying to google things for which you don't know the correct terminology.
select a.CardNumber, a.LastName, a.FirstName, a.CustomerID, b.dataitem
from tableA A inner join TableB b
on a.recordid = b.recordid
where b.columnA= 'CompanyA' and b.columnB = 1
Here is your solution,
select a.CardNumber, a.LastName, a.FirstName, a.CustomerID, b.DataItem from
tableA a
inner join tableB b
on (a.RecordID = b.RecordID)
where
b.DataItem='CompanyA'
b.RecordID=1;
Le me know if the result is not as expected
Your question is quite hard to understand, but let me give you an example that resembles the what i think you are asking.
SELECT a.*, b.DataItem FROM A a INNER JOIN B b
ON a.RecordID = b.RecordID AND
b.DataItem = `CompanyA`
At the database engine level, if you are using Microsoft technology, the most efficient structure is to use an indexed foreign key constraint on Table B, and a Primary Surrogate Key (PSK) column on Table A. The Primary Surrogate Key in your case is on the Parent table, Table A, and is called RecordID. The foreign key column with the FKC is on Table B, on the column named RecordID. Once you verify that there is a FKC (foreign key constraint on Table B, which pins both columns named RecordID between both tables on matched values), then address the GUI. At the GUI, between the tabs, you generally indicate you have a parent table with a unique set of Record IDs (one column named Record ID with absolutely unique values in each row and no empty rows on that column). There will also be child tables on each Tab in your GUI, and those are bound to the parent table in a "1 to Many (1:M)" fashion, where 1 parent has many children. Your commentary or question indicates that you also want to filter, where Record ID on the child in one of the related tabs equates to the integer value 1 on the Record ID. So, there needs to be a query somewhere:
SELECT [columns]
FROM [Table B]
INNER JOIN [Table A]
ON A.RecordID = B.RecordID
AND B.RecordID = 1;
Does that help?
I have 3 columns in table A. I am trying to design a query that will call out all the values (in the three columns) that do not apepar in the 1 column I have in table B. If it helps to make it more clear, table B is a list of currencies in ISO codes and table A is three columns of currencies being used, I am identifying all those values that are NOT using ISO codes to denote their currency.
Currently, I can't seem to get them all to match to the one column, so I made 2 more columns in table B so I can match them individually. My constraints are, I cannot change table A and I must do this in one query. What I got so far is below.
SELECT m.Currency1, i.ISO_Code, m.Currency2 , i.ISO_Code1, m.Currency3, i.ISO_Code2
FROM A AS m
LEFT JOIN B AS i
ON m.Currency=i.ISO_Code
AND m.Currency2=i.ISO_Code1
AND m.Currency3=i.ISO_Code2
WHERE i.ISO_Code is NULL
OR i.ISO_Code1 is NULL
OR i.ISO_Code2 is NULL;
I wouldn't bother making multiple columns in 'B'. I played with this in SQLFiddle and got it to work.
Something like this:
SELECT
m.Currency1, i.ISO_Code,
m.Currency2, j.ISO_Code AS ISO_Code1,
m.Currency3, k.ISO_Code AS ISO_Code2
FROM A AS m
LEFT JOIN B as i
ON m.Currency1 = i.ISO_Code
LEFT JOIN B as j
ON m.Currency2 = j.ISO_Code
LEFT JOIN B as k
ON m.Currency3 = k.ISO_Code
WHERE
i.ISO_Code IS NULL OR
j.ISO_Code IS NULL OR
k.ISO_Code IS NULL
I have two tables A and B containing many columns, two of which in use are SKU and Typedesc.
I created a table C by joining A and B on sku and typedesc
create table C as
select A.*
from A inner join
B
on A.sku=B.sku and trim(A.typedesc)=trim(B.typedesc)
C has approx. 130,000 records
Now I want to delete the rows in A which are present in C
delete from A A1
where exists (select 1
from C c1
where A1.sku=c1.sku and trim(A1.typedesc)=trim(c1.typedesc)
)
It says 145,000 rows deleted.
Where did the extra 15,000 rows came from? Is there something wrong with my delete query? So when I join two tables, C should also have 145,000 but instead it has only 130,000!! why is this so? A or B does not contain any primary key.
Even if i delete B from A directly, the number of rows deleted remains 145,000.
delete from A A1
where exists (select 1
from B b1
where A1.sku=b1.sku and trim(A1.typedesc)=trim(b1.typedesc)
)
The EXISTS looks alright, but without seeing which rows are being deleted it's hard to tell what the problem is, and I don't want to review 145,000 rows any more than you do :)
Try this alternative and see if it makes any difference:
DELETE FROM A
WHERE (SKU, TRIM(TypeDesc)) IN (SELECT SKU, TRIM(TypeDesc) FROM B)
Hi I want to search through table 2 with a value (names CustID) from table 1, and if all the values are found in table 2 (CustID) that matches table 1 (CustID) the values must be shown together with all the values from table 1 that does not match table 2's values.
Is it possible to do it this way and if it is can you please show me how, I need this for a project.
Thanks in advance
It sounds like you want a "LEFT" JOIN, which will pull up all records in table1 plus the matching ones in table2.
SELECT A.,B. FROM table1 A LEFT JOIN table2 B ON A.CustID = B.CustID