The SQL Server Date Magic: When CAST and CONVERT Keep Your Index Seek
This article shows two scenarios, tested independently, with the full scripts and the real numbers from each run.
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date conversion
Combine DATE and TIME to DATETIME2 in SQL Server
The most common method on the internet for combining DATE and TIME columns in SQL Server is incorrect. This article demonstrates why that and other methods are incorrect and two lesser known high performance methods that produce correct results even for the "edge cases".
2023-08-07
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How to Find the Start and End Dates for the Current Week (and more)
Learn to calculate Start / First of Week, End of Week, Start of Next Week, Year, Quarter, and Month of the week, Week Numbers and more in T-SQL (Jeff Moden)
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Question of the Day
Adding Bits I
I have a table, dbo.bittest, where I am testing an application response. This has this structure:
CREATE TABLE [dbo].[BitTest] ( [insertdate] [datetime] NULL CONSTRAINT [DF__BitTest__insertd__300F11AC] DEFAULT (getdate()), [a] [bit] NULL ) ON [PRIMARY] GOMy application runs this code:
INSERT dbo.BitTest
(
insertdate,
a
)
VALUES
(DEFAULT, 'true')
GO
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