2010-12-15
3,003 reads
T-SQL
Hidden Formatting Troubles with STR() (SQL Spackle)
Fill in another bit of your T-SQL knowledge about STR(). It right justifies, rounds, and controls the output width of columns. Sounds perfect but here's why you might not want to use it.
2019-04-26 (first published: 2010-12-15)
16,449 reads
2010-12-13
2,780 reads
The DELETE statement in SQL Server
Of the big four DML statements in SQL Server, the DELETE is the one least written about. This is odd considering the extra power conferred on the statement by the addition of the WITH common_table_expression; and the OUTPUT clause that essentially allows you to move data from one table to another in one statement.
2010-12-13
6,506 reads
SQL CLR Function for Email validation and string Split
I have added 2 functions here, one for email validation and another to split the string by specified separator by user.
2010-12-23 (first published: 2010-12-11)
1,681 reads
2010-12-27 (first published: 2010-12-10)
1,162 reads
2010-12-10
3,020 reads
2010-12-09
2,710 reads
Eval arithmetic statement function in SQL
This function evaluates the statement like '4+5*6-3' and returns the numeric value.It is just like Eval funcction in javascript.
2010-12-15 (first published: 2010-12-08)
1,046 reads
2010-12-08
2,911 reads
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Question of the Day
Checking Identities
The DBCC CHECKIDENT command is used when working with identity values. I have a table with 10 rows in it that looks like this:
TravelLogID CityID StartDate EndDate 1 1 2025-01-11 2025-01-16 2 2 2025-01-11 2025-01-16 3 3 2025-01-11 2025-01-16 4 4 2025-01-11 2025-01-16 5 5 2025-01-11 2025-01-16 6 6 2025-01-11 2025-01-16 7 7 2025-01-11 2025-01-16 8 8 2025-01-11 2025-01-16 9 9 2025-01-11 2025-01-16 10 10 2025-01-11 2025-01-16The docs for DBCC CHECKIDENT say this if I run with only the table parameter: "If the current identity value for a table is less than the maximum identity value stored in the identity column, it is reset using the maximum value in the identity column. " I run this code:
DELETE dbo.TravelLog WHERE TravelLogID >= 9
GO
DBCC CHECKIDENT(TravelLog, RESEED)
GO
INSERT dbo.TravelLog
(
CityID,
StartDate,
EndDate
)
VALUES
(4, '2025-09-14', '2025-09-17')
GO
What is the identity value for the new row inserted by the insert statement above? See possible answers