Is Timestamp Coloum Value Is Unique ??
May 26, 2008
Hi all
I have a table, and contains one coloum with timestamp data type,
so i can retrieve timestamp coloum data by executing following query
select CONVERT (int, timestamp_coloum ) from MyTable
Query result as follow
4003
4017
4036
4041... etc......
I just want to know is this result ( out put vale after converted timestamp to INT ) is unique for entire Database ???
Thanks
IndikaD (Virtusa cop)
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Nov 6, 2007
Hi,
i need to create a sql statement to get the latest timestamp for a user and am struggling
my table once it has been joined has
employee id door permiter door time
1 1 yes 12/12/2002 10:00
1 1 yes 13/12/2002 10:00
1 1 yes 14/12/2002 10:00
2 1 yes 12/12/2002 10:00
2 1 yes 13/12/2002 10:00
3 1 yes 12/12/2002 10:00
4 1 yes 12/12/2002 10:00
So what i would like returned from this would be:
employee id door permiter door time
1 1 yes 14/12/2002 10:00
2 1 yes 13/12/2002 10:00
3 1 yes 12/12/2002 10:00
4 1 yes 12/12/2002 10:00
could someone give me a pointer on this....very new to SQL
thanks
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May 24, 2007
I am attempting to move a timestamp data column from DB2 to SQL Server 2005. Normally not a big deal but the column is part of unique index.
The DB2 timestamp has seconds of ss.ssssss but SQL Server only has ss.sss.
Most all the times entered into this column are a from an automated process so they are really close together timewise.
Here is what I have come up with so far:
1. Fast Load OLEDB with a batch of 10,000 records at a time
2. On the fail of the batch redirect rows to a regular table load OLEDB insert task
3. On the fail of the single insert redirect rows to script that ups the seconds one tick.
4. Attempt one last insert of the modified rows
5. If fail, then store the record off to a delimited text file
I am hoping to get the number of records that wind up in the delimited text file to be a very small number and not in the 1,000+.
Any help would be appreciated.
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Sep 25, 2007
Hello,
I have a critical job.
When i take the view job history of that job here it has a colum named as 'duration'. It gives the exact duration of each step it has taken in its last run.
But i have the same job in test environment.
But when i take take the history here i dont see any duration column. how can i add that column.
Thank you
ichayan
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Sep 24, 2015
I have a transaction table having about 40 crore rows in source. It don't have timestamp and unique key columns. It have only Bill_month and Bill_Year columns. Actually for loading this table into staging I have added a new datetime column by adding default bill_date as 01. Then
* First we delete last 3 month data from staging tables.
* Get last 3 months data from source table.
* Load that 3 months data from source to staging table.
We do this because we only get update for last three months data. Now I have to include this transaction table as Fact table in DW. What will be the best practice for loading the fact table by picking data form staging table. Also we have to look up with dimensions for Foreign Keys.
* Should I implement the same method of deleting last 3 months records and loading them again.
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Jun 19, 2007
I am populating oracle source in Sql Server Destination. after few rows it fails it displays this error:
[OLE DB Destination [16]] Error: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80004005. An OLE DB record is available. Source: "Microsoft OLE DB Provider for SQL Server" Hresult: 0x80004005 Description:
"Invalid date format".
I used this script component using the following code in between the adapters, However after 9,500 rows it failed again giving the same above error:
To convert Oracle timestamp to Sql Server timestamp
If Row.CALCULATEDETADATECUST_IsNull = False Then
If IsDate(DateSerial(Row.CALCULATEDETADATECUST.Year, Row.CALCULATEDETADATECUST.Month, Row.CALCULATEDETADATECUST.Day)) Then
dt = Row.CALCULATEDETADATECUST
Row.CALCULATEDETADATECUSTD = dt
End If
End If
I don't know if my code is right . Please inform, how i can achieve this.
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Jun 23, 2015
date time s-sitename TimeTaken(Seconds)
6/8/2015 10:56:26 TestSite 100
6/8/2015 10:56:26 TestSite 500
6/8/2015 10:56:26 TestSite 800
6/9/2015 11:56:26 TestSite 700
6/9/2015 11:56:26 TestSite 200
6/12/2015 12:56:26 TestSite 700
I have a table with above values, I am looking for a sql query to find AvgTimeTaken at different time stamps and total count of each time stamp
Output
date time s-sitename TimeTaken(Seconds) Count_of_Request
6/8/2015 10:56:26 TestSite 1400 3
6/9/2015 11:56:26 TestSite 900 2
6/12/2015 12:56:26 TestSite 700 1
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Jul 10, 2007
For starters, please feel free to move this if it is in the wrong forum.
The issue I have is this. I have been asked to delete all information from a table that was inserted before May 12 this year. The issue is that when the DB was created, whoever designedd it neglected to add a timestamp column for the user data table (the one I need to purge). Does SQL, by default, happen to store insert times? Would it be something that might hide ina log file somewhere?
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Jul 5, 2015
This index is not unique
ix_report_history_creative_id
Msg 2601, Level 14, State 1, Procedure DFP_report_load, Line 161
Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'.
The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
Msg 3621, Level 0, State 0, Procedure DFP_report_load, Line 161
The statement has been terminated.
Exception in Task: Cannot insert duplicate key row in object 'dbo.DFP_Reports_History' with unique index 'ix_report_history_creative_id'. The duplicate key value is (40736326382, 1, 2015-07-03, 67618862, 355324).
The statement has been terminated.
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Sep 22, 2004
A UNIQUE INDEX must inherently impose a unique constraint and a UNIQUE CONSTRAINT is most likely implemented via a UNIQUE INDEX. So what is the difference? When you create in Enterprise Manager you must select one or the other.
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Jul 20, 2005
HelloWhat should I use for better perfomance sinceunique constraint always use index ?ThanksKamil
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Jun 24, 2006
What's the difference in the effect of the followings:
CREATE UNIQUE NONCLUSTERED INDEX
and
ALTER TABLE dbo.titles ADD CONSTRAINT
titleind UNIQUE NONCLUSTERED
I found there're two settings in Indexs/Keys dialog box of the management studio, Is Unique, and Type. The DDL statements above are generated by setting Is Unique to yes plus Type to Index, and just Type to Unique Key, respectively. What's the difference between them?
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Mar 7, 2001
Hi everyone,
I need urgent help to resolve this issue...
As far as the performance goes which one is better..
Unique Index(col1, col2) OR Unique constraint(col1, col2) ?
Unique constraint automatically adds a unique index
and unique index takes care of uniqueness then whats the use of unique constraint ?
Which one do one use ?
thanks
sonali
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Jan 20, 2006
BOL says a unique constraint is preferred over a unique index. It also states that a unique constraint creates a unique index. What then is the difference between the two, and why is a constraint preferred over the index?
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Mar 26, 2008
hi team,
.Can i create umique constraint with out unique index.when i am creating a unique constraint sql creates a unique index (default) can i have only unique constraint ?
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Mar 12, 2008
I am having a problem trying to figure out the best way to get the results I need. I have a table of part numbers that is joined with a table of notes. The table of notes is specific to the part number and user. A row in the notes table is only created if the user has entered notes on that part number. I need to create a search that grabs all matches on a keyword and returns the records. The problem is that it currently returns a row from the parts table with no notes and a separate row with the notes included if they had created an entry. It seems like this should be easy but it eludes me today.
Here is the code
Code Snippet
create procedure SearchPartKeyword
(
@Keyword varchar(250) = null,
@Universal_Id varchar(10) = null
)
as
select p.PartNumber, p.Description, p.ServiceOrderable, n.MyNotes, p.LargestAssembly, p.DMM,
p.Legacy, p.Folder, p.Printer
from Parts p inner join notes n on p.PartNumber = n.Identifier
where n.Universal_ID = @Universal_ID and p.Description like @Keyword
union
select p.PartNumber, p.Description, p.ServiceOrderable, '' as MyNotes, p.LargestAssembly,
p.DMM, p.Legacy, p.Folder, p.Printer
from Parts p
where p.Description like @Keyword
and the results:
PartNo Description SO Notes LA DMM Legacy Folder Printer
de90008 MAIN BOARD 1 DGF1 114688 0 0 0
de90008 MAIN BOARD 1 I love this part Really I do DGF1 114688 0 0 0
This could return multiple part numbers and If they have entered notes I want the row with the notes
Thank You
Dominic Mancl
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Nov 13, 2007
What 's difference between Unique key and unique index in SQL server 2005?
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May 1, 2008
Here is the table I created:
create table Test (
[recId] [int] identity(1, 1) not null,
[code] [varchar](50) not null,
[prime] [bit] not null constraint [DF_Test_prime] default (cast(0 as bit)),
constraint [PK_Test] primary key clustered
(
[recId]
) with fillfactor = 90 on [primary]
) on [primary]
go
insert into Test (code, prime) values ('AVA', cast(1 as bit))
insert into Test (code, prime) values ('BUS', cast(1 as bit))
insert into Test (code, prime) values ('BUS', cast(0 as bit))
insert into Test (code, prime) values ('BUS', cast(0 as bit))
insert into Test (code, prime) values ('CAR', cast(1 as bit))
insert into Test (code, prime) values ('CAR', cast(0 as bit))
insert into Test (code, prime) values ('RLW', cast(1 as bit))
insert into Test (code, prime) values ('RLW', cast(0 as bit))
insert into Test (code, prime) values ('RLW', cast(0 as bit))
select *
from Test
I need to create a constraint on this table that will not allow me to have two rows that are prime for the same code. So the following insert statement should fail:
-- This should fail
insert into Test (code, prime) values ('RLW', cast(1 as bit))
Thanks for you help!
Regards,
Anand
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Apr 2, 2007
how to insert a value into table where the fieldname uses a datatype timestamp.(asp.net2.0)
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Jun 6, 2007
I have a timestamp in a date field of a table I have but when run it does not enter the date automatically and all I get is system.byte[] display where the dtae and time should be, how can i get it so this field places the date in automatically.???
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Jun 20, 2007
I am retrieving data from a database, and have been noticing some really strange timestamps. Has anyone ever seen a timestamp that looks like this: 16777215Karls
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Jul 12, 2004
Hello,
I just started using SQL and i don't really know too much syntax.
I have an ASP page that is inserting data into a table called YellowAlerts.
The first field in this table is AlertDate. I thought I read somewhere that there is a timestamp feature. If anyone could help me out that would be great.
Thanks.
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Jul 6, 2000
How can I add a timestamp column to a table that will let me know when
a record was inserted? (perhaps by setting a default to that column?)
For some reason, @@currenttimestamp gives me
some binary garbage.
Please help with any suggestions.
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Aug 23, 1999
How do I "disable" the timestamp so that when I copy my data into a new
database it will use the timestamp from the last time the table was effected?
Thanks,
Tracy
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Jun 2, 1999
Hi All,
I believe that all created tables have got by default a timestamp field.
I tried to find out how to read this field with a Transact-SQL statement.
And so I don't know the syntax, is anyone can help me ?
Thanks,
Herve
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Feb 10, 2005
If i have a table with a 3 fields and one of them has a timestamp as a field type and I want to do an insert or update what is the value I am inserting for the column timestamp.
Help appreciated
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Sep 23, 2006
hello I put a time stamp in one of my column and it says binary data in the field. How do i make that binary data turn into a real date and time. If this is possible how do I separate the date from the time in the results or would I have to do this myself. Also, I need to sort the results by date can this be done?
Sorry for the stupid questions my sql book (sql demystified) does not elaborate. Thanks
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Sep 4, 2006
hello,
m new to sql server.can any one tell me is it possible to insert only time value in timestamp datatype.
i have table which have datatype datetime.and i have to insert only time.i can't change the datatype datetime to any other one.p
plz any one can suggest me the solution..
Regards,
Sonal.
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Feb 12, 2008
Hello I'm not a SQL Expert but i'm using it for a few months. Now i need to use a variable that everytime that is called to a select into it gives the timestamp (or Stamp) to put on a specific field. The problem is that i need this variable not in bd conotation (like 2007-02-12 12:00:44:33) but like this 2007021212004433. Can someone help me? Thanks in advance.
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Jul 20, 2005
Is there any reason to have a TimeStamp column onto a table that has aPrimaryKey when using SQL Server and an Access front end?I read that doing so will always eliminate that write conflict error.But I notice that when pulling a recordset of 10K records, it takes 3Xless time if I delete the timestamp column on the table before runningthe SP.lq
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Jul 20, 2005
Is there any chance to get the content of a timestamp field?I am trying to get the content via Visual Objects and I am receiving onlynothing.Not NIL but "".Is it possible to get any useful information out of this field in anylanguage?(btw I know that the MS-Timestamp is not a timeformat)THXJens
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Jul 20, 2005
Is there any reason at all to use a timestamp column in a table havinga primarykey column???lq
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Nov 29, 2007
Hi there,
When inserting into a table with a timestamp column without explicitly setting the column_list you get the following.
ie.
insert into Table_A
select *
from Table_B
Cannot insert a non-null value into a timestamp column. Use INSERT with a column list or with a default of NULL for the timestamp column.
I was wondering if there's a way to overcome this without specifying the column list?
Thanks.
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