SSIS is able to take sorted data from more than one OLE DB data source and merge them into one table which can then be sent to an OLE DB destination. This 'Merge Join' transformation works in a similar way to a SQL join by specifying a 'join key' relationship. this transformation can save a great deal of processing on the destination. Annette Allen, as usual, gives clear guidance on how to do it.
2013-10-28
4,491 reads
People often conclude that the cheap price of storage is a license to use as much as possible, but there is a cost.
2013-10-25 (first published: 2010-12-31)
18,051 reads
In order to take full advantage of the In-Memory OLTP options in SQL Server 2014, you should migrate standard stored procedures that references Memory-Optimized tables to natively compiled ones. In this tip we will see how to achieve this goal.
2013-10-25
3,317 reads
How to manage your MaxMemory values on an Active-Active two node cluster.
2013-10-24
3,950 reads
SQL Saturday is coming to Dallas on November 2. This is a free, one day conference for SQL Server training and networking.
On November 1, there will be a pre-conference event featuring Andy Leonard, Grant Fritchey, and Drew Minkin.
2013-10-24
3,031 reads
SQL Server Reporting Services (SSRS) has evolved over the years to incorporate many new data visualization capabilities. In this article, Scott Murray illustrates how DBAs can use these tools to produce reports that include Indicators, Embedded Charts, Sparklins, and Chart overlays.
2013-10-24
6,148 reads
When pushing a major release to a large production database, you want to know that you'll be able to rollback changes if the need arises. These are some simple steps which we can follow to ensure that we don't have to reconfigure log shipping all over again thereby saving time and ensuring systems are not affected when rolling back changes.
2013-10-23
3,892 reads
With all of the ETL tools in the marketplace, which one is best? Jeff Singleton brings us simple performance comparison pitting SSIS against open source powerhouse Talend.
2013-10-22
14,692 reads
In this article, Marcin Policht looks at migrating existing SQL Server databases to Windows Azure, starting with identifying obstacles associated with such migrations.
2013-10-22
3,910 reads
Collect your data from your servers easily using linked servers.
2013-10-21
4,567 reads
A RAG pipeline that answers questions in the demo is not the same thing...
By Steve Jones
“A multitude of bad ideas is necessary for one good idea” – from Excellent...
Yesterday I gave a talk for MSSQLTips called “Building a DBA Agent for Your...
ALAMAT : Jl. Raya Tumpang No.1, Ledoksari, Tumpang, Kec. Tumpang, Kabupaten Malang, Jawa Timur...
ALAMAT : Jl. Jend. Yani Jl.Pahlawan No.99, Ardirejo, Kepanjen, Kec. Kepanjen, Kabupaten Malang, Jawa...
Comments posted to this topic are about the item Adding new column with DEFAULT
Which number will the COUNT() return after executing the following statements:
DROP TABLE IF EXISTS #test; CREATE TABLE #test (id INT) INSERT INTO #test (id) SELECT * FROM GENERATE_SERIES(1, 3) AS gs ; ALTER TABLE #test ADD flag BIT CONSTRAINT DF_#test_flag DEFAULT 0; go UPDATE #test SET flag = 0 WHERE id = 1 UPDATE #test SET flag = 1 WHERE id = 2 INSERT INTO #test (id) VALUES (4) SELECT COUNT(*) FROM #test AS t WHERE flag = 0See possible answers