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Table: customer
Customer number PRODUCT_ID
---------------- -----
12345 1
23456 2
12345 3
23456 3
12345 4
I need to create a query that will list all customers having 2 or more PRODUCT_ID > 2
select c.customer_number, count(c.product_id) as product_count
from customer c
group by c.customer_number
having count(c.product_id) > 2
You should read through this explanation of how HAVING clause should be used in conjunction with aggregate functions: https://www.w3schools.com/sql/sql_having.asp
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Example tables:
Table A Table B
A 1
B 2
C 3
Expected output:
A 1
A 2
A 3
B 1
B 2
B 3
C 1
C 2
C 3
You need a cross join between the two tables:
SELECT a.column_a, b.column_b
FROM a
CROSS JOIN b
ORDER BY a.column_a, b.column_b
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Need to write SQL query for getting below output with the given input table:
Input Table:
Col1
1
2
3
Output:
Col1
1
2
2
3
3
3
WITH CTE(NN)AS
(
SELECT 1 UNION ALL
SELECT 2 UNION ALL
SELECT 3 UNION ALL
SELECT 4 UNION ALL
SELECT 5
)
SELECT C.NN
FROM CTE AS C
CROSS JOIN CTE C2
WHERE C2.NN<=C.NN
CTE is your input table
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I have
id value
1 12
1 15
1 17
1 22
1 22
1 23
And I need like this
id value
1 --
1 3
1 2
1 5
1 0
1 1
Could you tell me, how to achive this?
You can try the below -
select id,
value-max(value) over(order by id rows between 1 preceding and 1 preceding) as value
from tablename
You seem to want lag(), which I'm guessing is per id and based on the ordering of value:
select t.*,
(value - lag(value) over (partition by id order by value)) as diff
from t
order by value;
That said, your sample data has exact duplicates. That is unusual in a SQL table.
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Update table based on self join on customer_po = ID
Table XYZ
ID Invoice Date Delivery_date Customer_po
123 01-01-2018 null null
125 10-01-2018 null 123
I want Output record like below in Oracle SQL
ID Invoice Date Delivery_date Customer_po
123 01-01-2018 01-01-2018 null
125 10-01-2018 01-01-2018 123
You need an update statement like this.
UPDATE xyz
SET Delivery_date =
(SELECT MAX (invoice_date)
FROM xyz
WHERE Customer_po = 123);
Note that I have used MAX to avoid the errors due to multiple values for Customer_po = 123
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i have table Match:
ID (int)
ID_Match (int)
ID_Player (int)
Attend (bit)
Goals (int)
When i write
Select * from Match
i have this:
ID ID_Match ID_Player Attend Goals
1 69 1 10 1 2
2 70 1 11 0 0
And i want have this:
ID_Player ID_Match Attend Goals
10 1 1 2
Have you some idea?
try this :
select top 1 ID_Player ,ID_Match ,Attend ,Goals from table_name order by ID asc