Usage of CTE - Trick with Dates
This article exlores the usage of CTEs as a replacement to cursors in order to generate additional data by applying logic to existing data.
2017-03-03 (first published: 2013-06-18)
37,892 reads
Suresh Maganti
- Interests: Query Tuning, Performance Tuning, Disaster Recovery, MS SQL Server 2005/2008, HA, DR.
Eliminating Duplicate Rows using The PARTITION BY clause
The Partition clause in the Row_Number() Over() function is a quick tool for eliminating duplicate rows.
2012-03-02 (first published: 2010-09-22)
144,874 reads
Dealing with Incomplete Data - A T-SQL Puzzle 1
Client data received for processing may have invalid records based on processing requirements. Identifying and dealing with bad records in a specific scenario is the object of this article.
2011-11-22
4,309 reads
The RECOMPILE Options
This artcle attempts to differentiate between the uses of WITH RECOMPILE and OPTION (RECOMPILE) features.
2011-07-07
8,619 reads
Improving Database Design and Performance Using Compression
This article attempts to show a practical scenario on improving DB design and performance through row density and compression in Microsoft SQL Server 2008.
2010-11-18
9,257 reads
Arriving at Database Growth Factor in SQL Server 2000
It is highly recommended that you not rely on system tables in your application as the values and meanings many change between versions. But for an experienced person that digs into the system often and needs quick answers, these system tables may be a great source of information. Suresh Maganti brings us his recent adventure in finding a reliable way to determine the growth factor of a database.
2005-12-06
11,371 reads
Microsoft SQL Server Migration Assistant
Are you looking to move your Oracle databases to SQL Server? You should be and when you convince your management to do so, Microsoft has a tool to help. New author Suresh Maganti of Scalability Experts brings us a look at how this works.
2005-11-28
17,729 reads
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Question of the Day
Adding new column with DEFAULT II
Which number did the two COUNT(*) return:
DROP TABLE IF EXISTS #tmp CREATE TABLE #tmp (id INT NOT NULL) INSERT INTO #tmp (id) SELECT gs.value FROM GENERATE_SERIES(1, 5) AS gs ALTER TABLE #tmp ADD my_value INT NOT NULL CONSTRAINT df_tmp_my_value DEFAULT 1 SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1 ALTER TABLE #tmp DROP CONSTRAINT df_tmp_my_value ALTER TABLE #tmp ADD CONSTRAINT df_tmp_my_value DEFAULT 2 FOR my_value SELECT COUNT(*) FROM #tmp AS t WHERE my_value = 1See possible answers