My cuestion is when I execute the select directly in the SP does it reuse the
execution plan ?, like this

CREATE PROC dbo.ProcName @p1 int
AS
SET NOCOUNT ON;
–Procedure code here
SELECT column1 FROM dbo.TblTable1 where ProcID = @p1
– Reset SET NOCOUNT to OFF
SET NOCOUNT OFF;
GO

For example:
SELECT b.BatchID, b.BatchName, bt.BatchTransactionID, bt.BatchTransactionName
FROM dbo.Batch
INNER JOIN dbo.BatchTrx WITH(NOLOCK) ON dbo.BatchTrx.BatchID = dbo.Batch.BatchID
WHERE dbo.Batch.StatusID = 1
AND dbo.BatchTrx.StatusID = 1

/*
IF OBJECT_ID(‘tempdb..#tempAgingRecords’) IS NOT NULL
drop table #tempAgingRecords
*/

declare @itemid varchar(40),
@dataareaid varchar(10)

–Master records
select distinct t4.product_number itemid,
t3.company_id dataareaid,
1 processed
into #tempAgingRecords
from edw.dbo.f_inventory_transaction t1
left outer join edw.dbo.dim_inventory_trans_type t2 on
t1.transaction_type_key = t2.transaction_type_key
left outer join edw.dbo.dim_company t3 on
t1.company_key = t3.company_key
left outer join edw.dbo.dim_product t4 on
t1.product_key = t4.product_key
left outer join edw.dbo.dim_date t5 on
t1.date_key = t5.date_key
where –t2.transaction_type not in (‘Profit/Loss’, ‘Transfer’, ‘Quarantine Order’, ‘Transfer Order Shipment’, ‘Transfer Order Receive’)
t2.issues_status in (‘None’, ‘Sold’, ‘Deducted’, ‘Picked’)
and t2.receipt_status in (‘None’, ‘Purchased’, ‘Received’, ‘Registered’)
and t1.transaction_quantity < 0
–and t4.product_number = 'Meiban CM'
and t4.product_key is not null
and t5.[date] ’1/1/1900′
order by t4.product_number

–Variables for aging process
declare @negTable table (
negDatestatus datetime,
negQty decimal(28,12),
negProcessed int,
negRecid bigint,
negInventoryAmount decimal(28,12)
)

declare @posTable table (
posDatestatus datetime,
posQty decimal(28,12),
posProcessed int,
posRecid bigint,
posInventoryAmount decimal(28,12)
)

declare @negDatestatus datetime,
@negQty decimal(28,12),
@posDatestatus datetime,
@posQty decimal(28,12),
@negRecid bigint,
@posRecid bigint,
@negInventoryAmount decimal(28,12),
@posInventoryAmount decimal(28,12)

truncate table work_invent_trans_aging

while (select sum(processed) from #tempAgingRecords) 0
begin
select @itemid = itemid, @dataareaid = dataareaid from #tempAgingRecords where processed 0

insert into @negTable
select t5.[date] datestatus,
sum(t1.transaction_quantity) qty,
1 processed,
rec_id,
sum(case when t3.company_id = ‘rel’
then isnull(case when issues_status in (‘None’, ‘Sold’, ‘Deducted’,'Picked’)
and receipt_status in (‘None’, ‘Purchased’, ‘Received’, ‘Registered’)
then t1.transaction_quantity * t4.unit_cost end, 0)
else isnull(case when issues_status in (‘None’, ‘Sold’, ‘Deducted’,'Picked’)
and receipt_status in (‘None’, ‘Purchased’, ‘Received’, ‘Registered’)
then t1.posted_cost_amount end, 0) +
isnull(case when issues_status in (‘None’, ‘Sold’, ‘Deducted’,'Picked’)
and receipt_status in (‘None’, ‘Purchased’, ‘Received’, ‘Registered’)
then t1.adjustment_cost_amount end, 0) +
isnull(case when issues_status in (‘Deducted’,'Picked’)
or receipt_status in (‘Received’, ‘Registered’)
then t1.physical_cost_amount end, 0) end) as InventoryAmount
from edw.dbo.f_inventory_transaction t1
left outer join edw.dbo.dim_inventory_trans_type t2 on
t1.transaction_type_key = t2.transaction_type_key
left outer join edw.dbo.dim_company t3 on
t1.company_key = t3.company_key
left outer join edw.dbo.dim_product t4 on
t1.product_key = t4.product_key
left outer join edw.dbo.dim_date t5 on
t1.date_key = t5.date_key
where t4.product_number = @itemid
and t3.company_id = @dataareaid
–and t2.transaction_type not in (‘Profit/Loss’, ‘Transfer’, ‘Quarantine Order’, ‘Transfer Order Shipment’, ‘Transfer Order Receive’)
and t2.issues_status in (‘None’, ‘Sold’, ‘Deducted’, ‘Picked’)
and t2.receipt_status in (‘None’, ‘Purchased’, ‘Received’, ‘Registered’)
and t1.transaction_quantity < 0
–and t4.product_number is not null
and t5.[date] ’1/1/1900′
group by t5.[date],
rec_id
having sum(t1.transaction_quantity) 0
–and t4.product_number is not null
and t5.[date] ’1/1/1900′
group by t5.[date],
rec_id
having sum(t1.transaction_quantity) > 0

–Get the first positive quantity
select @posRecid = posRecid, @posDatestatus = posDatestatus, @posQty = posQty, @posInventoryAmount = posInventoryAmount from @posTable p1 where posProcessed 0 order by posDatestatus desc, posRecid desc

while (select isnull(sum(negProcessed), 0) from @negTable n1) 0
begin
–Get negative quantity
select @negRecid = negRecid, @negDatestatus = negDatestatus, @negQty = negQty, @negInventoryAmount = negInventoryAmount from @negTable n2 where negProcessed 0 order by negDatestatus desc, negRecid desc

if (select isnull(sum(posProcessed), 0) from @posTable) = 0
begin
–Insert negative value if there are no positive quantities
insert into work_invent_trans_aging
values (@negRecid, @posRecid, @itemid, @dataareaid, @negDatestatus, ’1/1/1900′, @negQty, ‘New1′, @negInventoryAmount)

set @negQty = 0
set @negInventoryAmount = 0
end
else
begin
if @posQty > (@negQty * -1)
begin
–Write into result table the consumed negative amount
insert into work_invent_trans_aging
values (@negRecid, @posRecid, @itemid, @dataareaid, @negDatestatus, @posDatestatus, @negQty, ‘Original’, @negInventoryAmount)

set @posQty = @posQty + @negQty
set @posInventoryAmount = @posInventoryAmount + @negInventoryAmount
end
else
–If the negative quantity has left to consume, get another positive record
while @negQty < 0
begin
–If there are no more positive record (still negatives left), then insert and end
if (select isnull(sum(posProcessed), 0) from @posTable) = 0
begin
insert into work_invent_trans_aging
values (@negRecid, @posRecid, @itemid, @dataareaid, @negDatestatus, '1/1/1900', @negQty, 'New2', @negInventoryAmount)

set @negQty = 0
set @negInventoryAmount = 0
end
else
begin
if (@negQty * -1) < @posQty
begin
insert into work_invent_trans_aging
values (@negRecid, @posRecid, @itemid, @dataareaid, @negDatestatus, @posDatestatus, @negQty, 'New3', @negInventoryAmount)

set @posQty = @posQty + @negQty
set @posInventoryAmount = @posInventoryAmount + @negInventoryAmount

set @negQty = 0
set @negInventoryAmount = 0
end
else
begin
–Write into result table the consumed positive amount
insert into work_invent_trans_aging
values (@negRecid, @posRecid, @itemid, @dataareaid, @negDatestatus, @posDatestatus, (@posQty * -1), 'New4', (@posInventoryAmount * -1))

set @negQty = @negQty + @posQty
set @negInventoryAmount = @negInventoryAmount + @posInventoryAmount

update @posTable
set posProcessed = 0
where posDatestatus = @posDatestatus
and posRecid = @posRecid

select @posRecid = posRecid, @posDatestatus = posDatestatus, @posQty = posQty, @posInventoryAmount = posInventoryAmount from @posTable p1 where posProcessed 0 order by posDatestatus desc, posRecid desc
end
end
end
end

update @negTable
set negProcessed = 0
where negDatestatus = @negDatestatus
and negRecid = @negRecid

set @negDatestatus = NULL
set @negQty = NULL
set @negRecid = NULL
end

–select * from @posTable t1 order by t1.posDatestatus, posRecid
–select * from @negTable t1 order by t1.negDatestatus, negRecid

–Clear aging variables
set @negDatestatus = NULL
set @negQty = NULL
set @negRecid = NULL
set @negInventoryAmount = NULL

set @posDatestatus = NULL
set @posQty = NULL
set @posRecid = NULL
set @posInventoryAmount = NULL

delete @negTable
delete @posTable

update #tempAgingRecords
set processed = 0
where itemid = @itemid
and dataareaid = @dataareaid
end
END

GO

These tips are very nice and helping me allot

Thanks

You may be surprised to know, but it is true that not having SET NOCOUNT ON may result in the application not behaving as it should.

In my opinion, removing “SET NOCOUNT ON” is not making things simple – it’s making things suicidal!

“CEATE PROCEDURE proc_name
as
your query”

thats it

I think T4S Stored Procedure Generator is good but will it improve performance of my SPs or not?

very good article and informative too.

For this situation to work, as Pinal is suggesting, you will have to take note of the time taken before the cached plan is found. Having the qualified schema name reduces the time taken to search for the correct plan.

Obviously we’re splitting hairs here, but in the world of DBA’s that’s often what we do if there’s a requirement to attain the fastest possible response.
Dallas

Hi sir i have some doubt regarding the above explanation

I try select * from dbo.Categories in NorthWInd db
execution plan showing Clustred index scan Estimated cpu cost 0.003125
and select cached plan size 9B

after that i try select * from Categories
execution plan showing Clustred index scan Estimated cpu cost 0.003125
and select cached plan size 9B

both the execution plans are same.

so why we need to put schema name with object name

regards,
swapnil K

Good Artical.

Kamlesh Gupta

User-schema separation introduced in SQL Server 2005 was meant to avoid this situation that you are talking about. Users are no longer directly linked to an object.

In the qualified object name that Pinal demonstrates, the “dbo” is not the user name, but the default schema name.

Nice artical.

But as you mentioned there in your article-
“always refer the objects with qualified name in the stored procedure” like:
—————————————————————————————————
SELECT * FROM dbo.MyTable — Preferred method
– Instead of
SELECT * FROM MyTable — Avoid this method
–And finally call the stored procedure with qualified name like:
EXEC dbo.MyProc — Preferred method
–Instead of
EXEC MyProc — Avoid this method
—————————————————————————————————
we could face problem when we have more than one database position like a test database server and a live database and database admin are different or database admin can be changed time to time, in that case to maintain the synchronization we need to change the query regarding database admin, which is quite impossible for a developer.

Nice artical.
Thanks for the information or tips you provide for optimazation in sql.

please give a very importance point of store procedures and function Difference

please give a very importance point of store procedures and function Difference

SQLAuthority rocks!!!