I currently have a select statement which returns Customer Numbers that are primary.
What I would like to do for those returned, I would like to have another column that is for customerRole. For customerRole the value should be either primary or secondary.
My current select statement is bringing those that are primary and based on that select statement. I would like to have a customerRole column that shows these as primary. Then I would like to use this same column with my other select statement to show those that are secondary. When they are ran together I would like to see something like:
accountNumber: 1234455 CustomerRole: Primary
AccountNumber: 3245454 CustomerRole: Secondary
Does anyone know how I can accomplish this? Here is my select to get primary numbers:
SELECT
F.CustomerNumber
FROM ods.CustomerFact F
JOIN ods.holderDim AD
ON F.HolderRowNumber = AD.HolderRowNumber
JOIN ods.holderOwesDim B
ON F.PrimaryHolderNumber = B.SecondaryHolderNumber
I think you want a CASE expression:
SELECT c.CustomerNumber,
(CASE WHEN EXISTS (SELECT 1
FROM ods.holderDim hd
WHERE c.PrimaryHolderNumber = hd.SecondaryHolderNumber
) AND
EXISTS (SELECT 1
FROM ods.holderOwesDim hod
WHERE c.PrimaryHolderNumber = hod.SecondaryHolderNumber
THEN 'Primary' ELSE 'Secondary'
)
END) as role
FROM ods.CustomerFact c;
Related
Plain and simple: Is it possible to create a dynamic ordering by system, depending on the value inside the column, the query will query.
The query goes something like this:
SELECT id, name, sortbycolumn FROM table
WHERE id = :in_id
UNION
SELECT id, name, null sortbycolumn FROM table
WHERE id = :in_id
ORDER BY -- This part I simply don't know how to write. I have tried case and decode...
To answer. I did finally find the solution. It was quite simple and whilst I read through other answers, I was confused as to why it did not work for me. Apparently the index of a column will not work when using case when.
In the end, I put up the whole query with unions into a subquery with the solution being:
SELECT * FROM(
SELECT id, name, sortbycolumn FROM table
WHERE id = :in_id
UNION
SELECT id, name, null sortbycolumn FROM table
WHERE id = :in_id
)
ORDER BY
case when sortbycolumn = 1 THEN id,
case when sortbycolumn = 2 then name
else id end
I’m trying to use a correlated subquery in my sql code and I can't wrap my head around what I'm doing wrong. A brief description about the code and what I'm trying to do:
The code consists of a big query (ALIASED AS A) which result set looks like a list of customer IDs, offer IDs and response status name ("SOLD","SELLING","IRRELEVANT","NO ANSWER" etc.) of each customer to each offer. The customers IDs and the responses in the result set are non-unique, since more than one offer can be made to each customer, and a customer can have different response for different offers.
The goal is to generate a list of distinct customer IDs and to mark each ID with 0 or 1 flag :
if the ID has AT LEAST ONE offer with status name is "SOLD" or "SELLING" the flag should be 1 otherwise 0. Since each customer has an array of different responses, what I'm trying to do is to check if "SOLD" or "SELLING" appears in this array for each customer ID, using correlated subquery in the case statement and aliasing the big underlying query named A with A1 this time:
select distinct
A.customer_ID,
case when 'SOLD' in (select distinct A1.response from A as A1
where A.customer_ID = A1.customer_ID) OR
'SELLING' in (select distinct A1.response from A as A1
where A.customer_ID = A1.customer_ID)
then 1 else 0 end as FLAG
FROM
(select …) A
What I get is a mistake alert saying there is no such object as A or A1.
Thanks in advance for the help!
You can use exists with cte :
with cte as (
<query here>
)
select c.*,
(case when exists (select 1
from cte c1
where c1.customer_ID = c.customer_ID and
c1.response in ('sold', 'selling')
)
then 1 else 0
end) as flag
from cte c;
You can also do aggregation :
select customer_id,
max(case when a.response in ('sold', 'selling') then 1 else 0 end) as flag
from < query here > a;
group by customer_id;
With statement as suggested by Yogesh is a good option. If you have any performance issues with "WITH" statement. you can create a volatile table and use columns from volatile table in your select statement .
create voltaile table as (select response from where response in ('SOLD','SELLING').
SELECT from customer table < and join voltaile table>.
The only disadvantge here is volatile tables cannot be accessed after you disconnect from session.
I am new to sql and trying to come up with a sql query which will list me the duplicate staff which were created in our system.
We have one staff which is created with id as 1234 and the same user has another account starting with staff id 01234. Is there anyway i can get the matching staff
Once i come up with correct duplicates i will than want to delete the accounts which don't have "0" at the start e.g deleted 1234 and only keep 01234
below is the sql
SELECT tps_user.tps_title AS [Name] , tps_user_type.tps_title AS [User Type]
FROM tps_user INNER JOIN
tps_user_type ON tps_user.tps_user_type_guid = tps_user_type.tps_guid
WHERE (tps_user.tps_title IN
(SELECT tps_title AS users
FROM tps_user AS t1
WHERE (tps_deleted = 0)
GROUP BY tps_title
HAVING (COUNT(tps_title) > 1))) AND (tps_user.tps_deleted = 0)
When you do you select try this:
SELECT DISTINCT CONVERT(INT,ID)
FROM your_table
WHERE ...
OR
SELECT ID
FROM your_table
WHERE ...
GROUP BY ID
This will convert all the id's to an int temporarily so when the distinct evaluates duplicates everything will be uniform to give you an accurate representation of the duplicates.
IF you don't want to convert them maybe convert them and insert them into a temporary table and add a flag to which ones have a leading zero. Or convert them then append a zero after you delete the duplicates since you want that anyway. It is easy to append a 0.
the below query will give you the list of duplicates with same Name and title. -
SELECT tps_user.tps_title AS [Name] ,
tps_user_type.tps_title AS [UserType],
COUNT(*) Duplicate_Count
FROM tps_user
INNER JOIN tps_user_type
ON tps_user.tps_user_type_guid = tps_user_type.tps_guid
group by tps_user.tps_title, tps_user_type.tps_title
having COUNT(*) > 1
order by Duplicate_Count desc
Select t1.stringId
from mytable t1
inner join mytable t2 on Convert(INT, t1.intId) = CONVERT(INT, t2.intId)
where t1.stringId not like '0%'
This should list all the persons that have duplicates but do not start with 0.
I have one table things full of items listed by ItemID. Given an ItemID, I need to get the record with the ItemID and all other items with the same name.
In the sample data below, given the ItemID of 1, I need to select all records with the same name (in this case, "poptarts") as ItemID 1, including the record with ItemID 1.
ItemID = 1 name = poptarts
ItemID = 7 name = poptarts
ItemID = 8 name = cheddar
ItemID = 323 name = poptarts
select a.ItemID, a.name from things where a.ItemID = '1'
UNION
select b.ItemID, b.name from things where b.name = a.name
The SQL I've written above however does not pass a.name to the second select. Is there any way to pass the first name value to the second select? I would like for the statement to return itemid = 1 as the first row and 7 and 323 as the other rows.
UNION is only really used to concatenate two distinct sets. Based on your example, you could probably do something like this:
SELECT a.ItemID, a.Name
FROM things a
WHERE name IN (SELECT name FROM things WHERE itemID = 1)
There are lots of ways to write this kind of query and will depend on which flavor of SQL you're using but this should be more or less universal.
select
a.itemID,
a.name
from
things a
where a.name in (
select name
from things b
where b.itemID = '1'
)
SELECT this.name, this.id, that.id
FROM thing this
LEFT JOIN thing that ON that.name=this.name AND that.id <> this.id
WHERE this.id = 1
;
NOTE: this also selects the this-rows that have no twin records; in that case the that.id will be NULL. If you want to suppress the records without twin-records, remove the LEFT.
UPDATE: added the id <> id clause to suppres the obvious match.
If you really only have one table, no need to bring it in twice, UNION, or anything fancy like htat.
SELECT
name
FROM
a --assuming this is your only table
GROUP BY
itemID, name
HAVING
itemID = '1'
Need your help guys in forming a query.
Example.
Company - Car Rental
Table - Cars
ID NAME STATUS
1 Mercedes Showroom
2 Mercedes On-Road
Now, how do I select only one entry from this table which satisfies the below conditions?
If Mercedes is available in Showroom, then fetch only that row. (i.e. row 1 in above example)
But If none of the Mercedes are available in the showroom, then fetch any one of the rows. (i.e. row 1 or row 2) - (This is just to say that all the mercedes are on-road)
Using distinct ain't helping here as the ID's are also fetched in the select statement
Thanks!
Here's a common way of solving that problem:
SELECT *,
CASE STATUS
WHEN 'Showroom' THEN 0
ELSE 1
END AS InShowRoom
FROM Cars
WHERE NAME = 'Mercedes'
ORDER BY InShowRoom
LIMIT 1
Here's how to get all the cars, which also shows another way to solve the problem:
SELECT ID, NAME, IFNULL(c2.STATUS, c1.STATUS)
FROM Cars c1
LEFT OUTER JOIN Cars c2
ON c2.NAME = c1.NAME AND c2.STATUS = 'Showroom'
GROUP BY NAME
ORDER BY NAME
You would want to use the FIND_IN_SET() function to do that.
SELECT *
FROM Cars
WHERE NAME = 'Mercedes'
ORDER BY FIND_IN_SET(`STATUS`,'Showroom') DESC
LIMIT 1
If you have a preferred order of other statuses, just add them to the second parameter.
ORDER BY FIND_IN_SET(`STATUS`,'On-Road,Showroom' ) DESC
To fetch 'best' status for all cars you can simply do this:
SELECT *
FROM Cars
GROUP BY NAME
ORDER BY FIND_IN_SET(`STATUS`,'Showroom') DESC
SELECT * FROM cars
WHERE name = 'Mercedes'
AND status = 'Showroom'
UNION SELECT * FROM cars
WHERE name = 'Mercedes'
LIMIT 1;
EDIT Removed the ALL on the UNION since we only want distinct rows anyway.
MySQL doesn't have ranking/analytic/windowing functions, but you can use a variable to simulate ROW_NUMBER functionality (when you see "--", it's a comment):
SELECT x.id, x.name, x.status
FROM (SELECT t.id,
t.name,
t.status,
CASE
WHEN #car_name != t.name THEN #rownum := 1 -- reset on diff name
ELSE #rownum := #rownum + 1
END AS rank,
#car_name := t.name -- necessary to set #car_name for the comparison
FROM CARS t
JOIN (SELECT #rownum := NULL, #car_name := '') r
ORDER BY t.name, t.status DESC) x --ORDER BY is necessary for rank value
WHERE x.rank = 1
Ordering by status DESC means that "Showroom" will be at the top of the list, so it'll be ranked as 1. If the car name doesn't have a "Showroom" status, the row ranked as 1 will be whatever status comes after "Showroom". The WHERE clause will only return the first row for each car in the table.
The status being a text based data type tells me your data is not normalized - I could add records with "Showroom", "SHOWroom", and "showROOM". They'd be valid, but you're looking at using functions like LOWER & UPPER when you are grouping things for counting, sum, etc. The use of functions would also render an index on the column useless... You'll want to consider making a CAR_STATUS_TYPE_CODE table, and use a foreign key relationship to make sure bad data doesn't get into your table:
DROP TABLE IF EXISTS `example`.`car_status_type_code`;
CREATE TABLE `example`.`car_status_type_code` (
`car_status_type_code_id` int(10) unsigned NOT NULL auto_increment,
`description` varchar(45) NOT NULL default '',
PRIMARY KEY (`car_status_type_code_id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;