I am doing a performance testing for In-memory option is sql server 2014. As a part I want to insert 500 million rows of records into a in-memory enabled test table I have created.
I need a sample script to insert 500 million records into a table ....
I have a row that is being used log track plays on our website.
Here's the table:
CREATE TABLE [dbo].[Music_BandTrackPlays](
[ListenDate] [datetime] NOT NULL DEFAULT (getdate()),
[TrackId] [int] NOT NULL,
[IPAddress] [varchar](20)
) ON [PRIMARY]
There's a CLUSTERED INDEX on ListenDate ASC and a NON CLUSTERED INDEX on the TrackId.
I have a TRIGGER on the Music_BandTrackPlays table that looks like the following:
CREATE TRIGGER [trig_Increment_Music_BandTrackPlays_PlayCount]
ON [dbo].[Music_BandTrackPlays] AFTER INSERT
AS
UPDATE
Music_BandTracks
SET
Music_BandTracks.PlayCount = Music_BandTracks.PlayCount + TP.PlayCount
FROM
(SELECT TrackId, COUNT(*) AS PlayCount
FROM inserted
GROUP BY TrackId) AS TP
WHERE
Music_BandTracks.TrackId = TP.TrackId
When a simple INSERT statement is done on the Music_BandTrackPlays table, it can take quite a long time. When I remove the TRIGGER the INSERTs are immediate. The Execution plan for the TRIGGER shows that a 'Inserted Scan' is taking up most of the resources.
How exactly is the pseudo 'inserted' table formed?
For now, I think the easiest thing to do is update my logging page so it performs 2 queries. One to UPDATE the Music_BandTracks table and increment the counter, and perform the INSERT into the Music_BandTrackPlays table seperately.
I'm ok with that solution but I would really like to understand why the TRIGGER is taking so long. The 'inserted' pseudo table will be 1 row 99% of the time. Does SQL Server perform a table scan on all 20 million rows in order to determine what's new and put it in the inserted pseudo table?
Thanks!
I need to use Bulk insert statement for copying a table with 200 million rows to another table on the same server...the table has no primary key or identity column.... script for BULK INSERT ...
View 9 Replies View RelatedI'm looking for some performance assistance on updating a column value in a table that contains approximately 50 million rows. I have a permanent table in another database that has the key column and value to be set. My query is listed below, but I'm afraid it will run quite awhile. Any suggestions would be appreciated.
update mytable
set column2 = b.column2
from mytable as a
join mytable1 as b
on a.column1 = b.column1
There is a one to one relationship between the two tables.
I have this table
CREATE TABLE [Sales].[Test_inmem]
(
[c1] [int] NOT NULL,
[c2] [nvarchar](20) COLLATE SQL_Latin1_General_CP1_CI_AS NOT NULL,
[ModifiedDate] [datetime2](7) NOT NULL CONSTRAINT [IMDF_Test_ModifiedDate] DEFAULT (sysdatetime()),
[Code] ....
I have to generate 1000000 random records into it. I tried various ways to insert records, but not being a developer could not do it. I hope to make the C1 as a serial number, C2 can be anything, C3 I want to be the timestamp.
I've been having some trouble getting a single-column "varchar(5)" field to reliably use a table seek instead of a table scan. The production table in this case contains 25 million rows. As impressive as it is to scan 25 million rows in 35 seconds, the query should run much faster.
Here's a partial table description:
CREATE TABLE [dbo].[Summaries_MO]
(
[SummaryId] [int] IDENTITY(1,1) NOT NULL,
[zipcode] [char](5) COLLATE Latin1_General_100_BIN2 NOT NULL,
[Golf] [bit] NULL,
[Homeowner] [bit] NULL,
[Code] .....
Typically, this table is accessed with a query that includes:
SELECT ...
FROM SummaryTable
WHERE ixZIP IN (SELECT ZipCode FROM @ZipCodesForMO)
This query insists on using a table scan. I've tried WITH (FORCESEEK) for example, but that just makes the query fail.
As I've investigated this issue I also tried:
SELECT * FROM Summaries WHERE ZipCode IN ('xxxxx', 'xxxxx', 'xxxxx')
When I run this query with 64 or fewer (actual, valid) ZIP codes, the query uses a table seek.But when I give it 65 or more ZIP codes it uses a table scan.
To summarize, the production query always uses a table scan, and when I specify 65 or more ZIP codes the query also uses a table scan. I'm wondering if the data type of the indexed column (Latin1_General_100_BIN2) is somehow the problem. I'll likely try converting the ZIP codes to an integer to see what happens.
I have been tasked with writing an update query to update a table with more than 150 million rows of data. Here are the table structures:
Source Tables :
OC
CREATE TABLE [dbo].[OC](
[OC] [nvarchar](255) NULL,
[DATE DEBUT] [date] NULL,
[DATE FIN] [date] NULL,
[Code Article] [nvarchar](255) NULL,
[INSERTION] [nvarchar](255) NULL,
[Code] ....
The update requirement is as follows:
DECLARE @Counter INT=0 --This causes the @@rowcount to be > 0
while @@rowcount>0
BEGIN
SET rowcount 10000
update r
set Comp=t.Comp
[Code] ....
The update took more than 48h and didn't terminate , how to accelerate it ?
I try to load data into a memOpt table (INSERT INTO ... SELECT ... FROM ...). The source table has a size about 1 Gb and 13 Mio Rows. During this load the LDF File grows to size of 350 GB (until the space if the disk is run out of space). The Server has about 110 GB Memory for the SQL Server reserved. The tempdB doesn't grow. The Bucket Size in the create statement has a size of 262144. The Hash key as 4 fields`(2 fields have the datatype int,1 has smallint, 1 has varchar(200). ) The disk for the datafiles has still space for the datafiles (incl. the hekaton files).
How can I reduce the size of the ldf files during the load of the data ?
I have a requirement to delete 1 Million records from a table having 10 Million data and it's being queried on 24/7 basis (don't have a downtime). how can I achieve that?
View 13 Replies View RelatedIF NOT EXISTS (SELECT TOP 1 1 FROM dbo.syscolumns WHERE id = OBJECT_ID(N'dbo.Employee) and name = 'DoNotCall')
BEGIN
ALTER TABLE [dbo].[Employee] ADD [DoNotCall] bit not null Constraint DoNot_Call_Default DEFAULT 0
IF ( @@ERROR <> 0 )
GOTO QuitWithRollback
END
It just takes a LOT of time in SQL Server Management studio. I have to cancel the query and cancelling takes a whole lot time. I am using SQL Server 2008.
We are facing a weird scenario in which the snapshot is getting corrupted after insertupdate few million records in to a table .
SQL Server 2012
windows server 2008 R2
service pack 1
64-bit OS
Select statement joining file1 to file2. File 1 may have 0, 1, or many corresponding rows in file2. I need to count the corresponding rows in table2. Table2 also has a Boolean column and I need to count the number of rows where it is true. So I need to count the total number of matching rows and the count of those that are set to true. This is an example of what I have so far. I had to add each column being selected into a Group by to make it work, but I do not know why. Is there some other way this should be set up.
SELECT c.CarId, c.CarName, c.CarColor, COUNT(t.TrailerId) as trailerCount, (add count of boolian, say t.TrailerFull is true)
FROM Car c
LEFT JOIN Trailer t on t.CarId = c.CarId
GROUP BY c.CarId, c.CarName, c.CarColor
I have the below table :
IDName Date_StartDate_End Time_StartTime_End
9xxxxx@gmail.com 13/06/2015NULL 23:00.0 NULL
10xxxxx@gmail.com NULL 14/06/2015 NULL 00:00.0
11xxxxx@gmail.com 15/06/2015NULL 00:00.0 NULL
12xxxxx@gmail.com NULL 15/06/2015 NULL 00:00.0
13xxxxx@gmail.com 14/06/2015NULL 00:00.0 NULL
14xxxxx@gmail.com NULL 14/06/2015 NULL 00:00.0
Then i need to replace second row with value with first row with null and so on :
IDName Date_StartDate_End Time_StartTime_End
9xxxxx@gmail.com 13/06/201514/06/2015 23:00.0 00:00.0
10xxxxx@gmail.com NULL NULL NULL NULL
11xxxxx@gmail.com 15/06/201515/06/2015 00:00.0 00:00.0
12xxxxx@gmail.com NULL NULL NULL NULL
13xxxxx@gmail.com 14/06/201514/06/2015 00:00.0 00:00.0
14xxxxx@gmail.com NULL NULL NULL NULL
I run the following statement and it will not update beyond 7 million plus rows and I have about 38 million to complete. I keep checking updated row counts and after 1/2 day it's still the same so I know something is wrong because it was rolling through no problem when I initiated it. I need to complete ASAP so it's adding to my frustration. The 'Acct_Num_CH' field is an encrypted field (fyi).
SET rowcount 10000
UPDATE [dbo].[CC_Info_T]
SET [Acct_Num_CH] = 'ayIWt6C8sgimC6t61EJ9d8BB3+bfIZ8v'
WHERE [Acct_Num_CH] IS NOT NULL
WHILE @@ROWCOUNT > 0
BEGIN
SET rowcount 10000
UPDATE [dbo].[CC_Info_T]
SET [Acct_Num_CH] = 'ayIWt6C8sgimC6t61EJ9d8BB3+bfIZ8v'
WHERE [Acct_Num_CH] IS NOT NULL
END
SET rowcount 0
I need to update about 1.3 million rows in a table of mine.
I am getting the data from one of the columns of the same table and
updating the new column.
I am doing this using a cursor which I have put in a stored procedure.
As this is a production table which users might be accessing.It is a
web based application and I can't slow the system down.
So I am willing to run the stored prcedure during off peak hours.
However, do I need to put this in a transaction?
If I did put it in a transaction what type of isolation level should I
opt for?
Data integrity is very important for me and I don't mind to compromise
on the performance.
I am doing this because one of the columns which has "short description"
entry is has become too small for business purposes and we want to increase it's
length from varchar(100) to varchar(150).
As this is SQL 6.5, I can't increase the lenght of the column.
So Iadded a new column and will run the stored proc.
What precautions are to be taken?
This is on a high priority basis and very important too.
Thanks in advance...
Stored procedure code:
USE DB_Registration_Dev
GO
IF EXISTS (SELECT NAME FROM SYSOBJECTS WHERE NAME='usp_update_product' AND TYPE='P')
DROP PROCEDURE usp_update_product
GO
CREATE PROC usp_update_product
AS
DECLARE @short_desc varchar(100)
DECLARE @prod_id int
DECLARE sdesc_curs CURSOR
FOR
SELECT [Product].[product_id] , [Product].[short_description]
FROM Product
OPEN sdesc_curs
FETCH NEXT FROM sdesc_curs
INTO @prod_id, @short_desc
WHILE @@FETCH_STATUS = 0
BEGIN
UPDATE Product
SET [Product].[sdesc] = @short_desc
WHERE Product_id=@prod_id
FETCH NEXT FROM sdesc_curs
INTO @prod_id, @short_desc
IF @@FETCH_STATUS <> 0
PRINT ' Finished Updating the table...go ahead and have fun ...! '
END
DEALLOCATE sdesc_curs
GO
Here is my table:
My question is: How can I insert a row for each unique TemplateId. So let's say I have templateIds like, 2,5,6,7... For each unique templateId, how can I insert one more row?
How to find the equal and opposite rows in a table.
E.g.:
book position
A 500
B -500
C -500
The output should return the rows having equal and opposite positions.
O/P:
A 500
B -500
I have tried self join on a table but in vain.Do we need to cursors for these row level handling?
I have a CTE query against a table with 32K rows that runs fine in 2008R2. I am running it in 2014 Std Ed. against the same data and it runs very slowly. Looking at the execution plan I think I see what's contributing to the slowness.
Note that the "actual number of rows" is some 351M...how is this possible?
the query:
declare @amts table (claim int,allowed decimal(12,2),copay decimal(12,2),deductible decimal(12,2),coins decimal(12,2));
;with unpaid (claimID) as (select claimID from claim where amt+copay + disct+mm + ded=0)
insert @amts
select lineID, sum(rc), sum(copay), sum(deduct),
case when sum(mm)>0 and (sum(mm)<sum(mmamt)) then sum(mm) else 0 end
from claimln
where status is null
and lineID not in (select claimID from unpaid)
group by lineID
it's like there's some massively recursive process going on?
I have a table with following rows.
FY REVCODE Jul Jun
2015 BNQ 1054839 2000000
2015 FNB 89032 1000000
2015 RS 1067299 3000000
I am looking to convert it to
Month BNQ FNB RS
JUL 1054839 89032 1067299
JUN 2000000 1000000 3000000
I tried with the following and result is coming for one month i.e. JUL but not with the second Month i.e Jun
SELECT 'Jul1' AS MON, [BNQ], [FNB], [RS]
FROM
(SELECT REVENUECODE, SUM(ROUND(((Jul/31)*30),0)) AS JUL
FROM RM_USERBUDGETTBL
WHERE USERNAME='rahul' AND FY=2015
GROUP BY REVENUECODE, USERNAME
) AS SourceTable
PIVOT
(SUM(JUL) FOR REVENUECODE IN ([BNQ], [FNB], [RS])) AS PivotTable
Results:
MONTHBNQ FNB RS
Jul11054839 89032 1067299
I need to load the following data into a SQL table. This is how the vendor is able to provide it to us.
CRCorp Daily Report,,,,,,
,,,,,,
Facility,Location,Purchase Order #,Vendor,Inventory #,Date Ordered,Extended Cost
09-Mowtown 495 CRST,09-402A Women's Imaging,327937,"BARD PERIPHERAL VASCULAR, INC.",113989,7/25/2014,650
09-Mowtown 495 CRST,09-402A Women's Imaging,327936,"WB MASON CO., INC.",112664,7/25/2014,8.64
01-Mowtown 499 CRST,01-302B Oncology,327947,McKesson General Medical,n/a,7/25/2014,129.02
[Code] ....
I have attempted to bulk insert it into this table with no luck.
CREATE TABLE POMaster
(Facility VARCHAR(75),
Location VARCHAR(75),
PONum INT,
VendorNm INT,
INVENTORYNUM VARCHAR(25),
orderDte DATE,
ExtendedPrice NUMERIC(10,2)
)
GO
It does not like the double quotes. How to make this format work? Do I need a format file?
I have two tables for insertion in one transaction scope. Table one have 10 rows. After first table insert statement (not yet committed) if I run select on first table from other session, it holds table until my insert is committed or rolled back and from (SSMS), it display 10 rows and then wait for transaction scope till finished. My question is do I need to use no lock hint in this situation. Or there is something wrong with isolation level. One saying that in this situation table should not hols select while insert is in transaction scope.
View 5 Replies View RelatedI am trying to add multiple records to my table (insert/select).
INSERT INTO Users
( User_id ,
Name
)
SELECT ( SELECT MAX(User_id) + 1
FROM Users
) ,
Name
But I get the error:
Violation of PRIMARY KEY constraint 'PK_Users'. Cannot insert duplicate key in object 'dbo.Users'.
But I am using the max User_id + 1, so it can't be duplicate
This would insert about 20 records.
Why the error?
I have a master table with after insert trigger on it.. When record is inserted into master table, the trigger fires and is captured in the backoffice table. In case the trigger fails, my record is neither in the master table nor in the back office table..
Is there anyway to capture the record either in the master table or in a separate table.
I have a need to insert stored procedure output a table and in addition to that add a datetimestamp column.. For example, Below is the process to get sp_who output into Table_Test table. But I want to add one additional column in Table_test table with datetimestamp when the procedure was executed.
insert into Table_Test execute sp_who
I have a situation where I have Table A, Table B.
View C is created by joining table A and table B.
I have written a instead of trigger D on view C.
I do not insert/update/delete on the view directly.
For every insert/update in table A /B the values should get insert/update in the view respectively. This insert/update on view should invoke the trigger.
And I am unable to see this trigger work on the view if any insert/update occurs on base table level.
Trigger is working only if any operation is done directly on the view.
In a t-sql 2012 sql script, I have the following script, that only works for a few records since the value of TST.dbo.LockCombination.seq only contains the value or 1 in most cases. Basically for every join listed below, there should be 5 records where each record has a distinct seq value of 1, 2, 3, 4, and 5. Thus my goal is to determine how to add the missing rows to the TST.dbo.LockCombination where there are no rows for seq values of between 2 to 5. I would like to know how to insert the missing rows and then do the following update statement. Thus can you show me the sql on how to add the rows for at least one of the missing sequence numbers?
UDATE LKC
SET LKC.combo = lockCombo2
FROM [LockerPopulation] A
JOIN TST.dbo.School SCH ON A.schoolnumber = SCH.type
JOIN TST.dbo.Locker LKR ON SCH.schoolID = LKR.schoolID AND A.lockerNumber = LKR.number
JOIN TST.dbo.Lock LK ON LKR.lockID = LK.lockID
JOIN TST.dbo.LockCombination LKC ON LK.lockID = LKC.lockID
WHERE LKC.seq = 2
A normal select statement looks like the following:
select * from TST.dbo.Locker LKR
JOIN TST.dbo.Lock LK ON LKR.lockID = LK.lockID
JOIN TST.dbo.LockCombination LKC ON LK.lockID = LKC.lockID
where LKR.number in (000,001,1237)
In case you need the ddl statements for the tables affected here are the ddl statements:
CREATE TABLE [dbo].[Locker](
[lockerID] [int] IDENTITY(1,1) NOT FOR REPLICATION NOT NULL,
[schoolID] [int] NOT NULL,
[number] [varchar](10) NOT NULL,
[serialNumber] [varchar](20) NULL,
[type] [varchar](3) NULL,
[locationID] [int] NULL,
[code]...-
I am writing a query to return some production data. Basically i need to insert either 1 or 2 rows into a Table variable based on a decision as to does the production part make 1 or 2 items ( The Raw data does not allow for this it comes from a look up in my database)
I can retrieve all the source data i need easily but when i come to insert it into the table variable i need to insert 1 record if its a single part or 2 records if its a twin part. I know could use a cursor but im sure there has to be an easier way !
Below is the code i have at the moment
declare @startdate as datetime
declare @enddate as datetime
declare @Line as Integer
DECLARE @count INT
set @startdate = '2015-01-01'
set @enddate = '2015-01-31'
[Code] .....
I am finding it difficult to find an example that allows for insertion of additional rows into a table, without dropping the table I'm inserting into. Or inserting specific values. Like this example..
[URL] ....
I have 6 table I am formatting the data to conform to the final table as I'm inserting it into, but none of these examples gives me the example needed. I am using SQL 2012.
<code>
SELECT
CONVERT(VARCHAR(50),[FName]) + ' ' + CONVERT(VARCHAR(50),[LName]) AS [CustName]
,CAST('ALARMCOM' as nvarchar(8)) as VendorName
,CONVERT(VARCHAR(25),[CUSTOMER_CS_ACCOUNT_NUMBER]) AS [Cust_ID]
,CONVERT(VARCHAR(40),[Charge_Description])as [ChargeType]
,CASE
[Code] ....
I'm new to using a DB and have a few questions about what I'm trying to do. I have some historical options data and want to place it into a sql express database. (I understand I might need to use a none express version once the db gets to big.) A months worth of data is over 5.5 million rows of data. So six years worth is ~400 million rows. Is it possible to put this into a sql db and be able to search it very fast? I have a months worth in a db now and it is pretty slow. Should I use a new table for each month and then have 6 years * 12 month = 72 tables to increase the search speed? I search by date and stock_symbol and the data looks like this:
Date, Stock_Symbol, Option_Symbol, Strike, BidPrice, AskPrice, Volume, OpenInterest, (and a few others)
The select statement is simple: SELECT * FROM Options WHERE Date = @Date and StockSymbol = @Symbol
Thanks
DELETING 100 million from a table weekly SQl SERVER 2000Hi AllWe have a table in SQL SERVER 2000 which has about 250 million recordsand this will be growing by 100 million every week. At a time the tableshould contain just 13 weeks of data. when the 14th week data needs tobe loaded the first week's data has to be deleted.And this deletes 100 million every week, since the delete is taking lotof transaction log space the job is not successful.Can you please help with what are the approaches we can take to fixthis problem?Performance and transaction log are the issues we are facing. We trieddeletion in steps too but that also is taking time. What are thedifferent ways we can address this quickly.Please reply at the earliest.ThanksHarish
View 4 Replies View RelatedIn our database, we have a very large table that gets updated every morning, start of the day is copying 4 million rows from the fact table from previous date to today's date in the same table and then some other processing. It takes 1 1/2 to 2 hrs to do this. There is a dts package created to copy these rows into temp table and then to this fact table.
This table has more than 200 million rows
Any ideas on how to accomplish this without doing the copy twice and not running into locking problems.
Thanks for any suggestions.
i am deleating 8 Million rows from my database,I am wondering how to control T-Log,also I heard something about row lock and table lock
View 4 Replies View Relatedi have a following table
table name : emp_master
empid efname emname elamane efathername emothername deptno edob edoj createdby updateby lastupdatedatetime lastactionperformed
empid is primarykey.
this table contains 20million of records and i want to fire following query on this to get employye all data where eployee is more than 10 year old
select empid ,efname, emname, elamane, efathername, emothername, deptno ,edob ,edoj ,createdby, updateby, lastupdatedatetime ,lastactionperformed
from emp_master
where year(doj)+10 > year(getadate())
this will return approx 10 million rows and taking 18 mins. tune this query what approaches should i take to reduce the time of execution.