Help with SQL Query Count
I have a table similar to the following
ID NUMBER
VAL1 NUMBER
VAL2 NUMBER
I need an SQL query that displays count of rows that have VAL1 开发者_如何学Python> VAL2 and Count of rows that have VAL1 < VAL2. Both counts using one SQL query. Thanks.
This query should work with most database platforms:
select sum(case when val1 > val2 then 1 end) as GreaterThanCount,
sum(case when val1 < val2 then 1 end) as LessThanCount
from MyTable
To show the sums in separate rows, you can do:
select case when val1 > val2 then 'GreaterThan' else 'LessThan' end as Type,
count(*) as Count
from MyTable
group by case when val1 > val2 then 'GreaterThan' else 'LessThan' end
SELECT SUM(VAL1 > VAL2) as arg1, SUM(VAL1 < VAL2) as arg2
Try this:
select id, count(VAL1 > VAL2) as more1, count(val2 > val1) as more2
from your_table
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