If you are going to do a lot of updating and it will be rare that the record does not exist, it is going to be best to try updating first and if no records are updated, insert one. hi,Actually I want a sql statement to update evary 10000 rows of a record....for eg...if a record consists of 30000 rows.....we created a new column in that record.....in that column we want to place the value 1 for first 10000 rows and the value 2 for next 10000 rows and the value 3 for next rows....and so on.....i.e., the value should be incremented by 1 for every 10000 rows....please help in this as quickly as possible...
(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
In this article we'll see how to use the Temporary tables and what are the necessary steps to be taken while using them and moreover sometimes it's required to add a column in Temporary tables dynamically
Let's explore two examples: how to use fake temporary tables inside triggers and how to use fake temporary tables to execute stored procedures affecting a batch of changes. So, how can you send a data set to a stored procedure for further processing? Suppose you have a stored procedure called CheckInvoice, which converts proposed invoices into permanent ones
Eliminate the Use of Temporary Tables For HUGE Performance Gains - SQL Server Performance
But, I found noticeable improvements when I decided to pre-compile a lot of aggregate data early as temp tables which are used in a lot of later queries. The execution plan indicated the optimizer had no idea what to expect from the derived tables as the actual number of rows was very different from the estimated number of rows
The lack of support for the UNIQUE option is no big deal since you can always define a PRIMARY KEY or UNIQUE constraint, which create a unique index underneath the covers. Since they already did the work in the parser, Microsoft decided to extend the support for such syntax to also disk-based tables, including table variables
Reader Level: Article Local and Global Temporary Tables in SQL Server 2008 By Sachin Kalia on Jun 28, 2013 Global Temporary tables, Local Temporary tables, SQL Server 2008, Temporary tables in SQL Server 2008, In this article I am sharing my experience with Temporary Tables in SQL Server 2008. They are visible to all connections of SQLServer, and only destroyed when the last connection referencing the table is closed (in which we have created the Global Temporary Table)
The compile time table cardinality is stored in the plan and if the statement is executed again with the same cardinality (either due to flow of control statements or reuse of a cached plan) no recompile occurs. As a side bar, recompiles with Temp Tables can occur with the addition of data and whether the DDL for the temp table is interlaced with the DML or not
However, if a query references a temporary table and two temporary tables with the same name exist at that time, it is not defined which table the query is resolved against. Nested stored procedures can also create temporary tables with the same name as a temporary table that was created by the stored procedure that called it
We extensively use GROUP BY and we all know problem with GROUP BY (We should have all selected column from select clause in group by clause, other wise we cannot use group by). The problem is: the system by mistake inserted duplicate data in R2-R5 (R1 is PK assuem autonumber) and in one of these duplicates R6 and R7 are also filled
drop table if exists
My particular environment is with running SSMS 2008 and pointing to a SQL 2000 DB, so your examples didn't work due to the target DB being SQL Server 2000
How to drop a table if it exists in SQL Server? - Stack Overflow
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Drop Temp Table If Exists
Derek Reply to this comment Home Tuning Services Featured Articles How to cache stored procedure results using a hash key There are a lot of different design patterns that lend themselves to creating SQL Server Database Optimization Guide In the troubleshooting guide we went over the different physical bottlenecks that can Yet Another Temp Tables Vs Table Variables Article The debate whether to use temp tables or table variables is an old Using Union Instead of OR Sometimes slow queries can be rectified by changing the query around a bit. Reply to this comment Derek Dieter 16 Sep 2011 at 12:19 pm Hi Kyaw, In this case, you do need the database name of TempDB because that is always where temporary tables are stored
SQL SERVER: Check If Temporary Table Exists
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