I have to do this exercise and I need your help.
I have a table with this rows:
Table Emp: Id, Name, Country, Age.
I have loaded this table twice
The second table is Table Emp2: Id2, Name2, Country2, Age2.
(with the same values like table emp1)
I want to create a pivot table, the dimension will be emp.id. the measure will be the concatinate of all the id's of the employees in table emp2 that have the same name and country.
Do I need to use the concat function? and how to do it?
Thank you!
Probably its easier to solve this in the script first.
(looking at the script below) We can see that there is one match - from Employee table the row with Id = 1 is matching with Employee2 rows Id2 = 1 and Id2 = 2
To get the match we can create additional table Employee_Link which will contain the link between Id and Id2.
To form the table we are loading (from Employee table) Id and concatenating Country and Name fields to form new field NameCountryLink (im using AutoNumberHash128 function to get number representation of the concatenated string)
The resulted table we are left join to the same table structure but sourced from Employee2 table.
The final table will contain only the matches between Employee and Employee2 tables.
Once we have the data we can create the UI table with dimension Id and measure concat(distinct IdMeasure, ',')
And the result will be:
As you can see only the first row contains the concatenated values and there is no match for Id = 2
Employee:
Load * Inline [
Id, Name , Country , Age
1 , Adam , Country1, 20
2 , John , Country2, 21
3 , Ana , Country3, 22
4 , Rose , Country4, 23
5 , David, Country5, 24
];
Employee2:
Load * Inline [
Id2, Name2, Country2, Age2
1 , Adam , Country1, 20
2 , Adam , Country1, 21
3 , Ana , Country3, 22
4 , Rose , Country4, 23
5 , David, Country5, 24
];
Employee_Link:
Load
Id,
AutoNumberHash128(Name, Country) as NameCountryLink
Resident
Employee
;
left join
Load
Id2 as IdMeasure,
AutoNumberHash128(Name2, Country2) as NameCountryLink
Resident
Employee2
;
// Optional - we can drop NameCountryLink if we dont need it anymore
// Drop Field NameCountryLink;
Related
The goal is to rank the Movies table according to quantity in the Inventory table such that for each duplicate value, it skips the subsequent value so that the next non-duplicate value remains in its rightful position. Display MovieID, Latest Title, Price, and the Rank.
WhileMovieId ‘1’ from Movies table corresponds to MovieId ‘101’ of your Movie inventory table and so on.
These are the tables
Movies
MovieId
latest title
Price
1
Breaking Dawn
200.00
2
The Proposal
185.00
3
Iron Man 2
180.00
4
Up
180.00
5
The Karate Kid
190.00
6
How to train your Dragon
190.00
7
Spiderman 3
195.00
Movie Inventory
MovieId
Quantity
101
3
105
4
107
5
108
7
110
8
111
4
And this is my attempt at the code that is showing a lot of NULL
SELECT CASE
WHEN Movies.MovieId + 100 = MovieInventory.MovieID
THEN CAST(MovieInventory.MovieID AS INT)
END AS 'MovieId',
Movies.LatestTitle, Movies.Price,
DENSE_RANK() OVER (ORDER BY Movies.MovieId DESC) AS [Rank]
FROM Movies, MovieInventory WHERE MovieInventory.MovieID IS NOT NULL
GO
This is what you need.
Notes:
You need RANK not DENSE_RANK to achieve the result you want
You need to order by Quantity
Use proper JOIN syntax, not comma , joins
Use table aliases for better readability
The foreign and primary key relationships are weird: mi.MovieID appears to be varchar but when converted to int is 100 more than m.MovieID???
The calculation in the SELECT is not accessible to the JOIN conditions
Don't use apostrophes '' to quote column names
SELECT
mi.MovieId,
m.LatestTitle,
m.Price,
RANK() OVER (ORDER BY mi.Quantity DESC) AS [Rank]
FROM Movies m
JOIN MovieInventory mi ON TRY_CAST(mi.MovieID AS int) = m.MovieID + 100;
There are three column,wherever D_ID=13,value_amount holds value for mode of payment and wherever D_ID=10,value_amount holds value for amount.
ID D_ID Value_amount
1 13 2
1 13 2
1 10 1500
1 10 1500
2 13 1
2 13 1
2 10 2000
2 10 2000
Now I have to add two more columns amount and mode_of_payment and result should come like below
ID amount mode_of_payment
1 1500 2
1 1500 2
2 2000 1
2 2000 1
This is too long for a comment.
Simply put, your data is severely flawed. For the example data you've given, you're "ok", because the rows have the same values to the same ID, but what about when they don't? Let's assume, for example, we have data that looks like this:
ID D_ID Value_amount
1 13 1 --1
1 13 2 --2
1 10 1500 --3
1 10 1000 --4
2 13 1 --5
2 13 2 --6
2 10 2000 --7
2 10 3000 --8
I've added a "row number" next to data, for demonstration purposes only.
Here, what row is row "1" related to? Row "3" or row "4"? How do you know? There's no always ascending value in your data, so row "3" could just as easily be row "4". In fact, if we were to order the data using ID ASC, D_ID DESC, Value_amount ASC then rows 3 and 4 would "swap" in order. This could mean that when you attempt a solution, the order in wrong.
Tables aren't stored in any particular order, that are unordered. What determines the order the data is presented in is the ORDER BY clause, and if you don't have a value to define that "order", then that "order" is lost as soon as you INSERT it.
If, however, we add a always ascending value into your data, you can achieve this.
CREATE TABLE dbo.YourTable (UID int IDENTITY,
ID int,
DID int,
Value_amount int);
GO
INSERT INTO dbo.YourTable (ID, DID, Value_amount)
VALUES (1,13,1 ),
(1,13,2 ),
(1,10,1500),
(1,10,1000),
(2,13,1 ),
(2,13,2 ),
(2,10,2000),
(2,10,3000);
GO
WITH RNs AS(
SELECT ID,
DID,
Value_amount,
ROW_NUMBER() OVER (PARTITION BY ID, DID ORDER BY UID ASC) AS RN
FROM dbo.YourTable)
SELECT ID,
MAX(CASE DID WHEN 13 THEN Value_Amount END) AS Amount,
MAX(CASE DID WHEN 10 THEN Value_Amount END) AS PaymentMode
FROM RNs
GROUP BY RN,
ID;
GO
DROP TABLE dbo.YourTable;
Of course, you need to fix your design to implement this, but you need to do that anyway.
Here is the scenerio, I have a input data and a table table1
Input Data Table1
Customer Id Campaign ID CustomerId CampaignID
1 1 4 2
1 2 6 3
2 3 1 1
1 3 5 5
4 2 9 8
4 4
5 5
I want to query table1 such that it return only those values from the where clause which are not present in table1. So the result will be as below
Result
Customer Id Campaign ID
1 2
2 3
1 3
4 4
5 5
So the query should be something like
select CustomerId, CampaignID from Table1
where Customer Id in (Input data for customer id) and CampaignId in (Input data for campaign id)
. I know this query is not right, but can someone please help.
Is there a way to filter the values given in where clause based on if they are present in table1?
P.S. table1 primary key (CustomerId, CampaignID)
This will work as for your scenario. But it wont show last result record 5,5 since it does not fulfill your need.
select * from input where (cust_id, camp_id) not in (select cust_id, camp_id from table1)
I have a table ratings, bookmark, checkin, food in food table there is a unique key sno and this sno key is used in remaining three tables.
food table
sno name totalrating totalcheckin
1 nitesh 52 45
2 abhishek 4 9
3 divye 42 30
ratings table
sno datakey rated name
1 3 3.0 divye
1 6 4.0 shashank
bookmark table
sno datakey name
1 3 divye
1 6 shashank
Checkin table
sno datakey name
1 2 abhishek
1 6 shashank
I need data where datakey is 3 if not present show null values and data key column not repeated
like
0 1 2 3 4 5 6 7 8 9 10
sno name totalrating totalcheckin sno rated name sno name sno name
3 divye 42 30 1 3.0 divye 1 divye null null
your query should look like this:
SELECT f.sno, f.name, f.totalrating, f.totalcheckin,
r.sno, r.rated, r.name,
b.sno, b.name,
c.sno, c.name
FROM food AS f
LEFT JOIN ratings AS r
ON f.sno = r.datakey
LEFT JOIN bookmark AS b
ON f.sno = b.datakey
LEFT JOIN checkin AS c
ON f.sno = c.datakey
WHERE f.sno = 3
Here is SQL Fiddle to see how it's work.
Also I agree with the guys in the comment which are told you to read something about JOIN syntax. It's pretty and you can start here, or more specific for your problem is LEFT JOIN, that is the begin and good place to start. Also you can see that I use aliases in my query about that read here.
GL!
P.S. (edit) and if you have any question fill free to ask... Also I notice that you have name column in every table, if I understand relation between your table it's not necessary. You should store name only in first table (food) and with simple JOIN from there you can pull that data whenever you need it!
I have a select * query which gives lots of row and lots of columns of results. I have an issue with duplicates of one column A when given the same value of another column B that I would like to only include one of.
Basically I have a column that tells me the "name" of object and another that tells me the "number". Sometimes I have an object "name" with more than one entry for a given object "number". I only want distinct "numbers" within a "name" but I want the query to give the entire table when this is true and not just these two columns.
Name Number ColumnC ColumnD
Bob 1 93 12
Bob 2 432 546
Bob 3 443 76
This example above is fine
Name Number ColumnC ColumnD
Bob 1 93 12
Bob 2 432 546
Bill 1 443 76
Bill 2 54 1856
This example above is fine
Name Number ColumnC ColumnD
Bob 1 93 12
Bob 2 432 546
Bob 2 209 17
This example above is not fine, I only want one of the Bob 2's.
Try it if you are using SQL 2005 or above:
With ranked_records AS
(
select *,
ROW_NUMBER() OVER(Partition By name, number Order By name) [ranked]
from MyTable
)
select * from ranked_records
where ranked = 1
If you just want the Name and number, then
SELECT DISTINCT Name, Number FROM Table1
If you want to know how many of each there are, then
SELECT Name, Number, COUNT(*) FROM Table1 GROUP BY Name, Number
By using a Common Table Expression (CTE) and the ROW_NUMBER OVER PARTION syntax as follows:
WITH
CTE AS
(
SELECT
*,
ROW_NUMBER() OVER (PARTITION BY Name, Number ORDER BY Name, Number) AS R
FROM
dbo.ATable
)
SELECT
*
FROM
CTE
WHERE
R = 1
WITH
CTE AS
(
SELECT
*,
ROW_NUMBER() OVER (PARTITION BY Plant, BatchNumber ORDER BY Plant, BatchNumber) AS R
FROM dbo.StatisticalReports WHERE dbo.StatisticalReports. \!"FermBatchStartTime\!" >= DATEADD(d,-90, getdate())
)
SELECT
*
FROM
CTE
WHERE
R = 1
ORDER BY dbo.StatisticalReports.Plant, dbo.StatisticalReports.FermBatchStartTime