Using the Merge Statement to populate a historical table with Effective Dating
One of my favorite uses for the MERGE statement introduced in SQL Server 2008 is the updating of a historical table. With versions prior to 2008 this operation had to be performed in two separate...
View ArticleQuick Table Transfers (Imports) using SSIS, Bulk Insert or BCP
Ever wonder why sometimes data transfer can be lightning fast while other times you’re watching sp_who2 wondering when it’s going to finish? It’s likely you’re noticing the difference between minimal...
View ArticleSQL Server 2008 Minimally Logged Inserts
SQL Server 2008 has now introduced minimally logged inserts into tables that already contain data and a clustered index. What happens is the initial inserts may be fully logged if the data pages they...
View ArticleExtracting Data from a Source System to History Tables
This is a topic I haven’t found much information written about, however nearly every system I’ve worked with needs this exact functionality. It is important that the method for extracting data be done...
View ArticleHow to Create a Type2 SCD (Slowly Changing Dimension)
This article could just as well be called creating a historical snapshot table. This type of table is also referenced as a dimension depending on what kind of data repository it’s located in....
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