T-SQL

Technical Article

Detection of Broken Forign Key Relationship

  • Script

Under special circumstances, it could happen that database contains "orphan" records. Data in dependant table exists without it's "parent" record in a master table. It could be caused by a bulk insert operation without CHECK_CONSTRAINTS option, or by disabling foreign key for a while or adding a foreign key to a table that already contains […]

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2002-03-27

210 reads

Technical Article

Rows count for each and every table in a DB 

  • Script

       By using this script one can find number of rows for each and every table in a database. Just cut and past this script in your DB and excute. A stored procedure will be created as 'Get_rowcounts_for_eachtable'. If U excuted this stored procedure, U can get all tablenames and rowcounts for respected […]

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2002-03-07

584 reads

Technical Article

SP to import to a file

  • Script

Is a SP that imports a table to a file. You just put the table name, the path and the sa password and then you have it. It is important that it parse the table inserted (pubs.dbo.sales for example) and checks that the db, the table with the owner exists

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2002-01-28

1,683 reads

Technical Article

Encryption Example

  • Script

Here in this T-sql tip I'am trying to compare the word "Hijacker" with two cases(line 3 and 4). Now they are in same when you compare the case (letter to letter), now you change the case of word "Hijacker" in either of the lines and run this SQL statements it will return different results. This […]

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2002-01-05

680 reads

Technical Article

Granting Access Permissions...

  • Script

Usually when we recreate or rename a table we need to give the appropriate access permissions to the SQL users...this is very common in database under development environment where frequently table structure changes and we have to recreate it....we can accomplish this with Enterprise Manager but what will you do if Enterprise Manager fails to […]

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2001-12-18

838 reads

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Question of the Day

The Maximum Value in the Identity Column

I have a table with this data:

TravelLogID CityID StartDate  EndDate
1           1      2025-01-01 2025-01-06
2           2      2025-01-01 2025-01-06
3           3      2025-01-01 2025-01-06
4           4      2025-01-01 2025-01-06
5           5      2025-01-01 2025-01-06
I run this code:
SELECT IDENT_CURRENT('TravelLog')
I get the value 5 back. Now I do this:
SET IDENTITY_INSERT dbo.TravelLog ON
INSERT dbo.TravelLog
(
    TravelLogID,
CityID,
    StartDate,
    EndDate
)
VALUES
(25, 5, '2025-09-12', '2025-09-17')
SET IDENTITY_INSERT dbo.TravelLog OFF
I now run this code.
DBCC CHECKIDENT(TravelLog)
GO
INSERT dbo.TravelLog
(
    CityID,
    StartDate,
    EndDate
)
VALUES
(4, '2025-10-14', '2025-10-17')
GO
What is the value for TravelLogID for the row I inserted for CityID 4 and dates starting on 14 Oct 2025?  

See possible answers