Comments for I grok, therefore I am http://blog.3234.net Developing Data-Centric Applications Wed, 20 Jul 2011 17:34:50 +0000 hourly 1 http://wordpress.org/?v=3.3.1 Comment on INSERT INTO & Temp Table Creation by Joshua Lynn http://blog.3234.net/20091015/insert-into-temp-table-creation/comment-page-1/#comment-2497 Joshua Lynn Wed, 20 Jul 2011 17:34:50 +0000 http://blog.3234.net/?p=163#comment-2497 Credit where credit is due. I used this sproc again today. tnx Matt Credit where credit is due. I used this sproc again today.

tnx Matt

]]> Comment on First Day of Current Month by Joshua http://blog.3234.net/20100303/first-day-of-current-month/comment-page-1/#comment-322 Joshua Mon, 15 Mar 2010 14:20:29 +0000 http://blog.3234.net/?p=216#comment-322 "Well I wouldn't have done it that way." - Someone to be named later Try this instead for a more efficient solution: SELECT GETDATE() AS CurrentDate , DATEDIFF(mm,0,GETDATE()) AS NumberOfMonthsSince , DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0) AS FirstOfMonth , DateAdd(dd,-1,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)) AS EndOfPreviousMonth , DateAdd(ms,-3,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)) AS EndOfPreviousMonth_Exact The CONVERT(VARCHAR(10) part is good if you want to output just the date without the time as text. But a bit expensive to force two type conversions when the same trick with DATEADD and DATEDIFF can work without the type conversions. “Well I wouldn’t have done it that way.” – Someone to be named later

Try this instead for a more efficient solution:

SELECT
GETDATE() AS CurrentDate
, DATEDIFF(mm,0,GETDATE()) AS NumberOfMonthsSince
, DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0) AS FirstOfMonth
, DateAdd(dd,-1,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)) AS EndOfPreviousMonth
, DateAdd(ms,-3,DATEADD(mm,DATEDIFF(mm,0,GETDATE()),0)) AS EndOfPreviousMonth_Exact

The CONVERT(VARCHAR(10) part is good if you want to output just the date without the time as text. But a bit expensive to force two type conversions when the same trick with DATEADD and DATEDIFF can work without the type conversions.

]]> Comment on SQL Server Bug – Synonyns by PocjekJoshua http://blog.3234.net/20091203/sql-server-bug-synonyns/comment-page-1/#comment-69 PocjekJoshua Mon, 07 Dec 2009 01:17:19 +0000 http://blog.3234.net/?p=189#comment-69 Did not know that. Any Idea what happens if you create a linked server back to the same server. I suspect it would work but you would loose all the conveniences of a of cross database connections. In other words, for development, it may be a good idea to use the synonym with a linked server back to the same server to ensure while testing you don't accidental do something that won't work in production like calling a UDF, or trying to pass XML or a NVARChAR(MAX). Just a thought. Did not know that. Any Idea what happens if you create a linked server back to the same server. I suspect it would work but you would loose all the conveniences of a of cross database connections.

In other words, for development, it may be a good idea to use the synonym with a linked server back to the same server to ensure while testing you don’t accidental do something that won’t work in production like calling a UDF, or trying to pass XML or a NVARChAR(MAX).

Just a thought.

]]> Comment on INSERT INTO & Temp Table Creation by SQL Server: Temporary Table Scripting | I grok, therefore I am http://blog.3234.net/20091015/insert-into-temp-table-creation/comment-page-1/#comment-29 SQL Server: Temporary Table Scripting | I grok, therefore I am Fri, 16 Oct 2009 13:42:19 +0000 http://blog.3234.net/?p=163#comment-29 [...] New version: here [...] [...] New version: here [...]

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