Using DELETE and TRUNCATE TABLE statements to delete data in SQL Server
More T-SQL advice SQL language crash course (just enough to be dangerous) Working with IntelliSense in SQL Server 2008 Management Studio One thing you might have noticed is the EmpID values are the same as in the original result set. Big data projects go beyond IT infrastructure Big data creates a big test for enterprises: finding the right employees who can meld the technology and business needs in a way ..
Clarifying LEFT and RIGHT in the defintion of a PARTITION FUNCTION in SQL Server 2005 - Kimberly L. Tripp
If November 1 comes around and you want the data for October to be added to your partitioned table and you ONLY want to show the most four months, then you will need to add October and remove June. I cannot use this column for referential integrity unless I create a composite unique key (not index) on that guid column and the datetime column again
The MERGE statement basicaly merges data from a source resultset to a target table base on a condition you specify if the data from the source already exists in the target or not
More SQLServerPedia Wiki Articles on SQL Server Partitioning When To Use SQL Server Partitioning History of Partitioning - how the feature worked in SQL Server 7, 2000, 2005, 2008 and newer
Loading data files with SQL Server's BULK INSERT statement
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SQL MERGE - PostgreSQL wiki
Due to the way this feature needs to be implemented internally, the following is the likely sequence in which this feature will be built: PostgreSQL doesn't have a good way to lock access to a key value that doesn't exist yet--what other databases call key range locking (SQL Server for example)
The table parameter feature greatly helps to reduce the development time because developers no longer need to worry about constructing and parsing long XML data. How to enable a SQL Server database for Data Change CaptureBefore applying the data change capture (CDC) on a SQL Server database table, the database should be enabled for Data Change Capture
Using the T-SQL MERGE Statement - SQLServerCentral
Contact the author Please log in or register to contact the author of this blog All Blogs All Bloggers on SQL Server Central Feeds Subscribe to this blog Archives for this blog May 2015 April 2015 March 2015 May 2014 April 2014 March 2014 DwainCSQL Dwain Camps is a seasoned project manager specializing in business solutions delivered through software development and implementation. DECLARE @RowsToDelete TABLE ( ID INT ,LineID INT ,PRIMARY KEY (ID, LineID) ); INSERT INTO @RowsToDelete (ID, LineID) SELECT 100, 3 UNION ALL SELECT 200, 2 UNION ALL SELECT 200, 4; Note how we can create a PRIMARY KEY on a table variable
Suppose you want to delete the rows from Customers, or alternatively update an attribute with a value representing the fact that the rows are discontinued. For example, if you have a SQL Server 2005 statement preceding a WITH clause that defines a common table expression (CTE), you have to terminate the previous statement with a semicolon to avoid ambiguity in regards to the meaning of the WITH clause
Microsoft SQL Server Integration Services: T-SQL Merge in SSIS as SCD alternative
http://microsoft-ssis.blogspot.com/2013/02/t-sql-merge-in-ssis-as-scd-alternative.htmlBefore we start, there is also a MERGE Destination that uses a T-SQL Merge statement, but it is still beta (since 2008) and the reviews aren't that good. Result Set pane 6) The Result For testing purposes I added a ridiculous number of clients in my text file and instead of logging to a table I added a MessageBox in a Script Task
While there are some cool new features for developers, there is one for DB2 developers that deserves special mention: the new Transact SQL (T-SQL) MERGE statement. For this demonstration, I defined a linked server using the ODBC driver that comes with System i Access V6R1 (formerly known as iSeries Access) with service pack level SI31390 connecting to a V6R1 host
SQL Server Forums - Performance of merge statement vs separate DMLs?
Is there anything fundamentally different about the merge statement in terms of how it executes (except for the obvious stuff such as single pass only etc). Presumably though, if the execution plans are the same, they're both going to execute in the same way except that the merge does it in 1 pass so should be quicker?Ive copied the merge code along with the separate DMLs below, nothing complicated
Stairway to T-SQL DML Level 12: Using the MERGE Statement - SQLServerCentral
Prior to showing you my MERGE statement I need to create and populate my target CurrentListing table, as well as create a table that will contain the monthly current listings I get from my another source. To maintain my CurrentListing table all I need to do is create the right MATCHED and NOT MATCHED conditions to determine when to do an INSERT or UPDATE, and then include a new NOT MATCHED BY SOURCE condition to perform the DELETE operation
I was asked by one of the readers that how do we know that this operator was doing everything in single pass and was not calling this Merge Operator multiple times. Any suggestions or tips is much appreciated how to go about for this kind of operation, how can I make use of inserted or deleted tables in my Merge statements
Reader Level: Article Merge Statement Using XML Data in SQL Server By Rakesh Kalluri on Apr 03, 2015 merge statement, SQL Language, SQL SERVER, XML Data, This article explains the Merge statement in SQL Server
Similarly, if the number of columns in the SELECT statement is less than the number of columns in the columns list, you will get the following error message: Msg 8159, Level 16, State 1, Line 5 'Source' has fewer columns than were specified in the column list
In previous versions of SQL Server, we had to write separate statements to INSERT, UPDATE, or DELETE data based on certain conditions, but now, using MERGE statement we can include the logic of such data modifications in one statement that even checks when the data is matched then just update it and when unmatched then insert it. StudentID 2 is deleted as it is more than 250, 25 marks have been added to all records that exists i.e StudentID 1,3 and the records that did not exists i.e
The last one defining the MERGE predicate identifies matches and nonmatches between rows in the source (the result of all table operators) and the target. For example, suppose you have a stored procedure that accepts as input parameters the attributes of a customer: @custid, @companyname, @country, @phone
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