I tried to find out and came to the conclusion that partition should used for this task. But, I've never used this before.
I have a table like:
id status
1 3
2 1
1 4
3 2
3 3
1 5
I want to get list of all id's that don't have status as 5. Please help!!
SELECT ID
FROM table_name
GROUP BY ID
HAVING COUNT( CASE status WHEN 5 THEN 1 END ) = 0
As simple as possible I think this would work for you. Your example could be more specific so I hope this is what you are trying to do.
SELECT DISTINCT id
FROM table_name
WHERE id NOT IN (SELECT id FROM table_name WHERE status = 5);
You wouldn't need partition to perform this task. All you have to do is
select id from
where status not in ('5')
Related
I have a table in PostgerSQL and I need to make N entries in the table twice and for the first half I need to fill in the partner_id field with the value 1 and the second half with the value partner_id = 2.
i try to `
update USERS_TABLE set user_rule_id = 1;
update USERS_TABLE set user_rule_id = 2 where USERS_TABLE.id > count(*)/2;
`
I depends a lot how precise the number of users have to be that are updated with 1 or 2.
The following would be quite unprecise,a s it doesn't take the exact number of user that already exist8after deleting some rows the numbers doesn't fit anymore.
SELECT * FROM USERS_TABLE
id
user_rule_id
1
1
2
1
3
2
4
2
5
2
SELECT 5
If you have a lot of deleted rows and want still the half of the users, you can choose following approach, which does rely on the id, but at teh actual row number
UPDATE USERS_TABLE1
set user_rule_id = CASE WHEN rn <= (SELECT count(*) FROM USERS_TABLE1)/ 2 then 1
ELSE 2 END
FROM (SELECT id, ROW_NUMBER() OVER( ORDER BY id) rn FROM USERS_TABLE1) t
WHERE USERS_TABLE1.id = t.id;
UPDATE 5
SELECT * FROM USERS_TABLE1
id
user_rule_id
1
1
2
1
3
2
4
2
5
2
SELECT 5
fiddle
In the sample case it it the same result, but when you have a lot of rows and a bunch of the deleted users, the senind will give you quite a good result
I have a table with following rows :
SectionId
SectionStatus
1
Assigned
1
Approved
2
Assigned
2
Assigned
3
Assigned
Now I want to fetch the SectionId where al SectionStatus belong to that SectionId are not Approved.
Result expected for above table : 1,2,3
Another Example :
SectionId
SectionStatus
1
Approved
1
Approved
2
Assigned
2
Assigned
3
Assigned
Result expected for above table : 2,3
This looks like aggregation with a conditional count in the HAVING clause.
SELECT t.SectionId
FROM yourtable t
GROUP BY t.SectionId
HAVING COUNT(CASE WHEN t.SectionStatus = 'Approved' THEN 1 END) = 0;
db<>fiddle
One way to get that is by cross-applying the record and check whether that is 'Approved' or not.
Try the following:
select distinct SectionId from yourtable tab
cross apply (select 'Approved' Stat)t
where t.Stat <> tab.SectionStatus
Please see the db<>fiddle here.
This is my data set.
P_Id I_id I_Name Qty
1 1 Jeans 1
1 5 Salwar 1
2 3 Socks 1
I want to update the created date for this table as follows:
P_Id I_id I_Name Qty C_dt
1 1 Jeans 1 01-01-2011
1 5 Salwar 1 01-01-2011
2 3 Socks 1 02-05-2013
I want the c_dt to remain constant for a particular P_id. I tried using dbms_random but it keeps changing. Query I had used:
update test_ins set c_dt=TO_DATE(TRUNC(DBMS_RANDOM.VALUE(TO_CHAR(DATE '2000-01-01','J'),TO_CHAR(sysdate,'J'))),'J') where p_id=i;
*i refers to the iteration for every purchase made.
Any help is appreciated.
Thanks,
Pravellika J
Thank you Gordon, I figured an other way:
update test_ins a set c_dt=
(
select TO_DATE(TRUNC(DBMS_RANDOM.VALUE(TO_CHAR(DATE '2000-01-01','J'),TO_CHAR(sysdate,'J'))),'J')
from dual group by a.p_id
)
where purchase_id=i;
I just added a group by clause to the p_id column in the sub query and it worked like charm :)
How about using a temporary table? The logic would be something like this:
create table temp_dte as
select distinct p_id,
TO_DATE(TRUNC(DBMS_RANDOM.VALUE(TO_CHAR(DATE '2000-0101', 'J'),
TO_CHAR(sysdate, 'J')
)), 'J') as val
from test_ins;
Then:
update test_ins
set c_dt = (select val from temp_dte td where test_ins.p_id = td.p_id);
I am selecting all badge numbers from a database where category is equal to 1.
category | badge number
0 | 1
1 | 1
2 | 5
1 | 1
Sometimes the category is duplicated, is there a way to only get unique badge numbers from the database?
So above there is two 1's in category, each with badge number 1. How can I make sure the result only gives '1' rather than '1,1'
Use DISTINCT key word in the SELECT statement.
SELECT DISTINCT badge_number FROM Your_Table WHERE category = 1
Use the distinct keyword in your select.
select distinct badge_number from table_name where category = 1
Have you tried Select Distinct :
SELECT DISTINCT [badge number] from table
where Category=1
http://www.w3schools.com/sql/sql_distinct.asp
Select Distinct Badgenumber from table where Category = 1
SELECT DISTINCT BadgeNumber FROM dbo.TableName
Where Category = 1
Edited:
Ohh, there are so many posts already .... !!
I am having data like:
ItemCode Attribute PositionID
ITEM-000032 CHESTSIZE 1
ITEM-000032 JACKETLEN 2
ITEM-000042 CHESTSIZE 1
ITEM-000042 JACKETLEN 2
**ITEM-000049 SLACKWAIST 1**
ITEM-000071 CHESTSIZE 1
ITEM-000071 JACKETLEN 2
ITEM-000074 CHESTSIZE 1
ITEM-000074 JACKETLEN 2
In above data except ITEM-000049 others are having perfect combination. so i want to create a new row for ITEM-000049
As
ITEM-000049 -- 2
to make it perfect.
Kind regards,
Om
Sounds like for each ItemCode, you are expecting 2 records, for 2 different Attributes.
So something like this is what I think you're after. Just run the SELECT part of it first without the INSERT to check it is indeed what you're after.
INSERT YourTable (ItemCode, Attribute, PositionID)
SELECT t.ItemCode, 'SECOND ATTRIBUTE', 2
FROM
(
SELECT ItemCode
FROM YourTable
GROUP BY ItemCode
HAVING COUNT(*) = 1
) t