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
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
SQLServerCentral.com
951 5,296 Sunday, July 19, 2015 12:38 AM In: RE: Virtual server By Blackdog Employers and Employees Opinions and questions about interactions with employees and employers. 58 731 Wednesday, April 8, 2015 4:39 AM In: RE: Movie Rental Database By Grant Fritchey Hardware Discussions about SQL Server hardware and sizing your servers
SELECT column1 FROM table1 INTERSECT SELECT column1 FROM table2 If you want in the output both column1 and column2 from table1 which has common columns1 in both tables. SELECT column1, column2 FROM table1 WHERE column1 IN ( SELECT column1 FROM table1 INTERSECT SELECT column1 FROM table2 ) To do this, make sure your column1 is unique and do not have duplicate records
Using Full-Text Search in SQL Server 2008 across multiple tables, columns - Stack Overflow
The only way I see around this problem is to replicate the Author's columns that you wish to search by in the Book table and index those columns (or column since it would probably be smart to store the author's relevant information in an XML column in the Book table). If you try to find all the books from a certain author and, therefore, use the author's name (or part of it) as the search criteria, the only books returned by the query will be those which have the search criteria in its own name
(In case you are thinking that XML or delimited strings could be an alternative here, permit me to point out that they, too, represent intermediate storage. One is the push model, where you create a rowset with the metadata, fill the rowset with your data, and in the regular parameter area, you pass the rowset pointer
Merge Statement in SQL Server 2008 - CodeProject
Happy programming!!! History 11th June, 2009: Initial post License This article, along with any associated source code and files, is licensed under The Code Project Open License (CPOL) Share email twitter facebook linkedin reddit google+ About the Author You may also be interested in... Facts about Merge Statement Here are a few facts that you must know before starting to use Merge Statement: Atomic statement combining INSERT, UPDATE and DELETE operations based on conditional logic Done as a set-based operation; more efficient than multiple separate operations MERGE is defined by ANSI SQL; you will find it in other database platforms as well Useful in both OLTP and Data Warehouse environments OLTP: merging recent information from external source DW: incremental updates of fact, slowly changing dimensions
While a VB.Net developer recently informed me that there is a SQLBulkCopy object available in .Net to send multiple rows of data to SQL Server at once, the data still can not be passed to a stored proc.Possibly the most anticipated T-SQL feature of SQL Server 2008 is the new Table-Valued Parameters. When multiple rows of data to SQL Server need to send multiple rows of data to SQL Server, developers either had to send one row at a time or come up with other workarounds to meet requirements
sql server - sql merge two rows into one, same table. (update 1st with 2nd row data, then delete 2nd row) - Stack Overflow
This works by constructing two rows in the src CTE - one row contains all of the data from the row we're going to remove except with the row we're copying data to as its ID column. first of all inner query will execute and substitute return value after equal symbol,outer query is conditional delete query it will delete only those record who satisfied condition
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
Combine Multiple Rows into One Row using SQL Server
Popular Posts Convert Integer to String in SQL Server Count number of tables in a SQL Server database Resolving CREATE DATABASE Permission denied in database 'master' error on Vista and SQL Express Copy a table from one database to another in SQL Server 2005 SQL Server: Export Table to CSV 3 Different Ways to display VIEW definition using SQL Server 2008 Management Studio Repair SQL Server Database marked as Suspect or Corrupted How to see active connections for each Database in SQL Server 2005 Every .NET Developer Should Know About the Database they are working with Types of JOIN in SQL Server - Inner, Self, Outer and Cross JOIN Recent Comments Loading..
No comments:
Post a Comment