SQL Server 2008 data and page compressions cut disk space and I/O. I explain ROW and PAGE compression and how to set them on tables, indexes and partitions.
SQLAuthority News – Hyderabad Techies February Fever Feb 11, 2010 – Indexing for Performance
My online follow up session for Hyderabad Techies covered SQL Server index maintenance: detect, create and rebuild. Over 50 people joined and asked questions.
SQL SERVER – INSERT TOP (N) INTO Table – Using Top with INSERT
INSERT TOP (N) INTO a table is not the same as INSERT with SELECT TOP (N). My example from a client training shows how the two methods differ.
QUOTENAME Object Names: Quote Each SQL Server Name Part
QUOTENAME object names separately to keep each part of a qualified SQL Server name intact. The function surrounds its entire input with identifier delimiters. A dot inside that input stays inside one quoted name. I keep the schema and object in separate variables.
SQLAuthority News – MUGH – Microsoft User Group Hyderabad – Feb 2, 2010 Session Review
I presented a session on SQL Server indexes at Microsoft User Group Hyderabad, led by Hima Vindu Vejella. The index talk was very well received.
SQL SERVER – Introduction to Rollup Clause
An introduction to the Rollup Clause in SQL Server, which aggregates at several levels of a hierarchy. A population table by country, state and city shows how.
Data Mining Algorithms (Analysis Services – Data Mining)
I quite often receive requests for the Data Mining Algorithms details. Book Online has wonderful resources for the same. I suggest to read them here.
geometry STOverlaps: Intersection Alone Is Not Enough
geometry STOverlaps asks a narrower question than whether two shapes share any points. I test equal and contained regions alongside a partial overlap. Those intersecting cases do not all satisfy the method’s overlap definition.
SQL SERVER- IF EXISTS(Select null from table) vs IF EXISTS(Select 1 from table)
Is IF EXISTS(Select null from table) faster than IF EXISTS(Select 1 from table)? A great comment thread by Divya, Brian and Marko answers it.
SQL SERVER – Recompile Stored Procedure at Run Time
Two ways to recompile a stored procedure at run time in SQL Server: add WITH RECOMPILE when you create it, or ask for a one-time recompile.