I need to pick a row based on a column value, example:
COLUMNID COLUMN2 COLUMN3 COLUMN4 PRIORITY
1 value34 null S 2
1 value34 5 N 1
2 value23 5 S 2
I need to load the row with the priority 1.
My distinct is based on all columns but priority.
I can not use SQL override
Use Aggregator and group by all the columns except PRIORITY, add new output port to calculate MIN(PRIORITY). Done.
Related
I have a Google Sheet that has 2 columns with integer rows in it. Both these columns have no relation to each other. But when I apply a A->Z sort on the 1st column the 2nd column values also change and vice versa. My task is to SORT these 2 columns individually in ascending order and create a 3rd column which checks if the values of this 1st 2 column are equal or not.
Example:
Col1 Col2
4 5
1 8
2 9
5 1
Expected Output after sorting them individually:
col1 col2
1 1
2 5
4 8
5 9
Solution 1:
You can filter and sort each column separately:
Solution 2:
Another solution would be to create the desired output by sorting each column separately and concatenating the results:
={{"Col1";sort(A2:A)},{"Col2";sort(B2:B)}}
I have a requirement related as below
1-If there is employee record then count the number of rows
a-if there are four rows then follow the layout 1,
and populate the column1 and column 2 with values in report and ltrimrtrim
b- if there are three rows, then follow the layout 2,
and hardcode the column 1 and column 2 with NULL
Otherwise, look for the employee record.
Couldn't get the logic, I used the router with as if column 1 and two null the send to layout two else 1. But the requirement is different.
router transformation, if null, layout one else 2
Step 1 - Use SRT>AGG>JNR to calculate count. create new column as count_all and set to COUNT(*). Please group by proper key columns.
Step 2 - Use RTR next to split data based on your condition.
group 1- count_all =4 then follow the layout 1 and...
group 2- count_all =3 then follow the layout 2 and...
group 3 - if count <3 then do employee record.
This is question in Oracle views.I have a table with Emp_id,Start_Period and Key. Sample data is given in Descending order of start period with 201909 on top. Need to generate a column named Key_order. (Finally I am planning to create a view with all 4 columns.)
With the sample data as shown. In the sorted list with Start_period what ever comes in first position with number 1 and then on, when the Key changes order has to increment by one.
That is in row 1 and 2 key is same and order is 1. In row 3 SCD changed to ABC so order has to increment by 1 so order value is 2. 4th position key changes and order becomes 3.
See in 7th and 8th position value is same so order remains 6 for both. I am trying to do this inside a view. Tried RANK() but it is sorting column Key and giving order based on that.
Please help.Sample Data
Set a one in each line that has a different key than the line before. Use LAG for this. Then build a running total of these ones with SUM OVER.
select
emp_id, start_period, key,
sum(chg) over (partition by emp_id order by start_period desc) as key_order
from
(
select
emp_id, start_period, key,
case when key = lag(key) over (partition by emp_id order by start_period desc)
then 0 else 1 end as chg
from mytable
)
order by emp_id, start_period desc;
How do I filter rows those have values in all columns (i.e exclude the row if they have a missing value/null in any of the columns)
Say:
id name age height
------------------------
1 abc 19 NULL
2 fds 34 2.3
3 grt NULL NULL
Output should be only row2. How do I do this?
The standard SQL aggregate function max() will return the highest value in a group; min() will return the lowest.
Is there an aggregate function in Oracle to return a random value from a group? Or some technique to achieve this?
E.g., given the table foo:
group_id value
1 1
1 5
1 9
2 2
2 4
2 8
The SQL query
select group_id, max(value), min(value), some_aggregate_random_func(value)
from foo
group by group_id;
might produce:
group_id max(value), min(value), some_aggregate_random_func(value)
1 9 1 1
2 8 2 4
with, obviously, the last column being any random value in that group.
You can try something like the following
select deptno,max(sal),min(sal),max(rand_sal)
from(
select deptno,sal,first_value(sal)
over(partition by deptno order by dbms_random.value) rand_sal
from emp)
group by deptno
/
The idea is to sort the values within group in random order and pick the first.I can think of other ways but none so efficient.
You might prepend a random string to the column you want to extract the random element from, and then select the min() element of the column and take out the prepended string.
select group_id, max(value), min(value), substr(min(random_value),11)
from (select dbms_random.string('A', 10)||value random_value,foo.* from foo)
In this way you cand avoid using the aggregate function and specifying twice the group by, which might be useful in a scenario where your query is very complicated / or you are just exploring the data and are entering manually queries with a lengthy and changing list of group by columns.