Adding a blank row when using union all

When executing the following query, is there a way that I can insert a blank row in between both queries where the union all is?  Thanks!

select SCHOOLID as "School Name", 
COUNT(CASE WHEN grade_level = '1' THEN 1 end) "EGRADE1",
COUNT(CASE WHEN grade_level = '2' THEN 1 end) "EGRADE2",
COUNT(CASE WHEN grade_level = '3' THEN 1 end) "EGRADE2",
COUNT(*) "Total Student Enrollment",
from students
where enroll_status=0 AND SCHOOLID IN (SCHOOL1, SCHOOL2, SCHOOL3, SCHOOL4)
group by Rollup(SCHOOLID)
UNION ALL
select SCHOOLID as "School Name", 
COUNT(CASE WHEN grade_level = '1' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE1",
COUNT(CASE WHEN grade_level = '2' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE2",
COUNT(CASE WHEN grade_level = '3' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE3",
COUNT(CASE WHEN S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "Total SPED Enrollment"
from students
LEFT JOIN PS.S_CT_STU_LANGUAGE_X S_CT_STU_LANGUAGE_X ON STUDENTS.DCID = S_CT_STU_LANGUAGE_X.STUDENTSDCID
where enroll_status=0 AND SCHOOLID IN (SCHOOL1, SCHOOL2, SCHOOL3, SCHOOL4)
group by Rollup(SCHOOLID)

Open in new window

BasssqueAsked:
Who is Participating?

[Product update] Infrastructure Analysis Tool is now available with Business Accounts.Learn More

x
I wear a lot of hats...

"The solutions and answers provided on Experts Exchange have been extremely helpful to me over the last few years. I wear a lot of hats - Developer, Database Administrator, Help Desk, etc., so I know a lot of things but not a lot about one thing. Experts Exchange gives me answers from people who do know a lot about one thing, in a easy to use platform." -Todd S.

sdstuberCommented:
add a query of all nulls

select <firstquery>
union all
select null,null,null,null,null from dual
union all
select <secondquery>

Experts Exchange Solution brought to you by

Your issues matter to us.

Facing a tech roadblock? Get the help and guidance you need from experienced professionals who care. Ask your question anytime, anywhere, with no hassle.

Start your 7-day free trial
Haris DulicIT ArchitectCommented:
Try like this:

select SCHOOLID as "School Name",
COUNT(CASE WHEN grade_level = '1' THEN 1 end) "EGRADE1",
COUNT(CASE WHEN grade_level = '2' THEN 1 end) "EGRADE2",
COUNT(CASE WHEN grade_level = '3' THEN 1 end) "EGRADE2",
COUNT(*) "Total Student Enrollment",
from students
where enroll_status=0 AND SCHOOLID IN (SCHOOL1, SCHOOL2, SCHOOL3, SCHOOL4)
group by Rollup(SCHOOLID)
UNION ALL

select '' as "School Name",
'' as "EGRADE1",
'' as "EGRADE2",
'' as "EGRADE2",
 '' as "Total Student Enrollment",
from dual
UNION ALL
select SCHOOLID as "School Name",
COUNT(CASE WHEN grade_level = '1' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE1",
COUNT(CASE WHEN grade_level = '2' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE2",
COUNT(CASE WHEN grade_level = '3' AND S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "SGRADE3",
COUNT(CASE WHEN S_CT_STU_LANGUAGE_X.ELLINDICATOR = 'Y' THEN 1 end) "Total SPED Enrollment"
from students
LEFT JOIN PS.S_CT_STU_LANGUAGE_X S_CT_STU_LANGUAGE_X ON STUDENTS.DCID = S_CT_STU_LANGUAGE_X.STUDENTSDCID
where enroll_status=0 AND SCHOOLID IN (SCHOOL1, SCHOOL2, SCHOOL3, SCHOOL4)
group by Rollup(SCHOOLID)
slightwv (䄆 Netminder) Commented:
You "can" but are you sure you want to?  I think you are trying to cram too much into a single query.

Anyway, here is a quick example of adding your blank line.

Note: I added a sort order column to the queries to ensure they come out in the correct order.

Remember, you need the same number of columns in ALL queries in a union so just add enough nulls to your blank line.
select col1 from (
	select 1 sortOrder, 'Hello' col1 from dual
	union all
	select 2 sortOrder, null from dual
	union all
	select 3 sortOrder, 'World' from dual
	order by sortOrder
)
/

Open in new window

BasssqueAuthor Commented:
Thanks to all!
It's more than this solution.Get answers and train to solve all your tech problems - anytime, anywhere.Try it for free Edge Out The Competitionfor your dream job with proven skills and certifications.Get started today Stand Outas the employee with proven skills.Start learning today for free Move Your Career Forwardwith certification training in the latest technologies.Start your trial today
Oracle Database

From novice to tech pro — start learning today.