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Generate dynamic SQL statements in SQL Server
When you need to solve a tricky database problem, the ability to generate SQL statements is a powerful tool -- although you must be careful when using it. This article explores how you can use this functionality to generate SQL statements on the fly. Dynamic SQL statements A...
Tags: Parameter, Procedure, Microsoft SQL Server, Statement, Server, SQL, SalesHistory, usp_GetSalesHistory, EXECUTE, Tim, Programming Languages, Databases, Software Development, Software/Web Development, Enterprise Software, Software, Data Management, Tim Chapman
Blog posts 2008-03-10
Train users to follow best practices when writing VBA code
If you train users to do a little coding on their own, they may not hit you up with as many development requests. I think that teaching users Visual Basic for Applications VBA is a good place to start because it's easy to learn. VBA lets you automate tasks and...
Tags: Solution, Procedure, Data, Statement, Variable, Code, Microsoft VBA, Best Practice, Value, Error, Figure E, Scripting Languages, Software/Web Development, Web Development, Susan Harkins
Blog posts 2008-02-01
Find blocking processes using recursion in SQL Server 2005
Blocking occurs in SQL Server 2005 when one process has one or more records locked, while another process tries to acquire locks on the same set or subset of records. This causes the second process to wait until the first process is done so it can acquire the records; this...
Tags: Process, Microsoft SQL Server, Statement, Information, Microsoft SQL Server 2005, #Processes, BlockingSPID, SELECT, RowNo, LevelRow, usp_StoredProcedure3, Tim, Databases, Enterprise Software, Software, Data Management, Tim Chapman
Blog posts 2008-01-28
Monitor query performance with the SQL Server 2005 procedure cache
In SQL Server 2005, you only need to recompile the statements inside stored procedures. This is much different than SQL Server 2000, where the entire procedure or batch may be recompiled. The benefit to the statement level recompile in SQL Server 2005 is that typically just a few statements inside...
Tags: Monitor, Procedure, Performance, Microsoft SQL Server, Statement, Database Engine, Microsoft SQL Server 2005, Execution Plan, Tim, Databases, Storage, Enterprise Software, Software, Data Management, Hardware, Tim Chapman
Blog posts 2008-01-17
Write your own sp_lock system stored procedure in SQL Server 2005
The sp_lock system stored procedure is a great tool for checking the amount of locking that occurs on your database system. It returns the number and types of locks that are being held by current active SQL Server sessions. One of my previous articles describes how you can use sp_lock...
Tags: Procedure, Microsoft SQL Server, Statement, Information, Session, Microsoft SQL Server 2005, LEFT JOIN, Sql_handle, sp_LockDetail Example, Tim, Storage, Databases, Hardware, Enterprise Software, Software, Data Management, Tim Chapman
Blog posts 2008-01-07
Rebuild indexes online with SQL Server 2005
Indexes are specialized data structures that operate on tables and sometimes views in the database engine used to aid in the searching for and sorting of data. Indexes are vital to the database engine returning results quickly. As data is modified in the underlying tables that the indexes operate on,...
Tags: Fragmentation, Microsoft SQL Server, Statement, Index, Microsoft SQL Server 2005, Table, ALTER INDEX Statement, ONLINE, ONLINE Option, Tim, Databases, Enterprise Software, Software, Data Management, Tim Chapman
Blog posts 2007-12-10
Execute SQL statements in Integration Services
Executing SQL statements is one of the easiest and most common tasks that occur in SQL Server 2005 Integration Services SSIS. This tutorial walks you through the process of adding SQL statements to your SSIS packages and bundling them into logical units of work if necessary. Add and bundle...
Tags: Data Source, Microsoft SQL Server, Statement, SQL, BigScreenProducts, Tim, Programming Languages, Databases, Software Development, Software/Web Development, Enterprise Software, Software, Data Management, Tim Chapman
Blog posts 2007-10-15
BitTorrent users take another hit
Some of the Internet's largest torrent trackers have been taken offline or severely cut back this month. For those of you who don't know what a torrent tracker is, it's a server which helps BitTorrent users to locate peers for a download via the BitTorrent protocol. ...
Tags: MPAA, BitTorrent, Statement, Obviously Copyright Infringement, Demonoid, Peer To Peer (P2P), Internet, Justin Fielding
Blog posts 2007-09-26
Using SQL Server 2008's MERGE statement
SQL Server 2008's new MERGE statement allows you to insert, update, or delete data based on certain join conditions in the same statement. In previous versions of SQL Server, you have to create separate statements if you need to insert, update, or delete data in one table based on certain conditions...
Tags: Microsoft SQL Server, Data, Statement, Table, SQL Server 2008, MERGE, MERGE Statement, Tim, Sales Strategy, Sales Force Management, Databases, Enterprise Software, Sales, Software, Data Management, Tim Chapman
Blog posts 2007-09-24
Optimize SQL Server queries with these advanced tuning techniques
Now that you know how to speed up your SQL Server database queries, you can start delving into some of the more advanced tuning options. The best way to tune performance is to try to write your queries in a number of different ways and compare their...
Tags: Technique, Database, Transaction, Query, Microsoft SQL Server, Statement, Server, Tim, Tim Chapman
Blog posts 2007-09-17
SCO files for Chapter 11 bankruptcy
With cash reserves running out, the SCO Group, Inc has filed for bankruptcy protection. In a move that probably did not surprise many, the company made the announcement in a news release issued on Friday afternoon, just before the stock exchange closed for the week. The statement...
Tags: Statement, SCO Group Inc., Bankruptcy, Litigation, Open Source, Business Operations, Paul Mah
Blog posts 2007-09-15
Speed up SQL Server database queries with these tips
If you've worked with SQL Server databases for any amount of time, it's practically a given that you've run into slow running queries. Sometimes the reason for the slow response time is due to the load on the system, and other times it is because the query is not written...
Tags: Business Situation, Database, Microsoft SQL Server, Statement, SaleDate, Tim Chapman
Blog posts 2007-09-11
Using NOLOCK and READPAST table hints in SQL Server
Table locking hints provide developers much tighter control of their transactions. Look at the benefits and disadvantages of using the NOLOCK and READPAST table hints in SQL Server. When data in a database is read or modified, the database engine uses special types of controls, called locks, to...
Tags: Microsoft SQL Server, NOLOCK, SalesHistory, Databases, Storage, Tim Chapman, server, lock, database, SQL Server Newsletter, Transaction, Data, Statement, Record, Downside, Table, READPAST, UPDATE Statement, Enterprise Software, Software, Data Management, Hardware
Technical articles 2007-05-21
Three ways to avoid Case Not Found errors in PL/SQL
Unlike some languages, PL/SQL's CASE statement generates an error if none of the cases are matched. Bob Watkins presents three ways to code around this error. PL/SQL has a rich CASE functionality. The selector CASE statement lets you test the value of an expression (much as the DECODE...
Tags: Oracle Corp., PL/SQL, Databases, Bob Watkins, Programming languages, PL/SQL CASE, CASE statement, clause, Oracle Tips Newsletter, Solution, Statement, Listing B, Software Development, Software/Web Development, Enterprise Software, Software, Data Management
Technical articles 2007-05-01
Delete rows during updates using Oracle 10g's MERGE statement
In Oracle 10g Release 1, the MERGE statement gained the ability to delete rows, as well as update and insert them. This Oracle tip shows you how it works. The MERGE statement, introduced in Oracle 9i Release 2, is often called an "upsert" because it can both...
Tags: Oracle Corp., Oracle Application Server 10g, Storage, Databases, Bob Watkins, Listing B, clause, Oracle Tips Newsletter, Transaction, Statement, MERGE, UPDATE, INSERT, Application Servers, Business Intelligence, Enterprise Software, Software, Data Management, Hardware
Technical articles 2007-02-20
Modifying execution context in SQL Server 2005
Tim Chapman outlines how you can use the EXECUTE AS clause to change execution context in SQL Server 2005. He then shows how you can use this clause to impersonate the owner of a table in a schema. Execution context is the identity for which SQL Server permits actions...
Tags: Microsoft SQL Server, Microsoft SQL Server 2005, Tim Chapman, Advertising & Promotion, Databases, Enterprise software, Execution context, permission, execution context, SQL Server Newsletter, Login, Procedure, Statement, EXECUTE, BaseUser, TableOwner, User-schema Separation, Marketing, Software, Data Management
Technical articles 2007-02-12
Use Service Broker Internal Activation in SQL Server 2005
DBA Tim Chapman walks you through the process of building a small Service Broker application that uses Internal Activation to process messages when they are passed. In previous articles, I covered the theory behind message-based systems and introduced the components of Service Broker, the new feature in...
Tags: Microsoft SQL Server, Microsoft SQL Server 2005, Tim Chapman, Databases, Service Broker, Internal Activation, Service Broker application, queue, stored procedure, SQL Server Newsletter, Message, Procedure, Statement, GO, SalesQueue, Sales Strategy, XML, Enterprise Software, Sales, Software/Web Development, Web Development, Software, Data Management
Technical articles 2007-02-05
Write PIVOT queries in SQL Server 2005
SQL Server 2005's PIVOT operator allows you to rotate row level data into tabular data without the use of the CASE statement. Tim Chapman describes why this new operator has a place in the TSQL developers' toolbelt. New to SQL Server 2005 is the PIVOT operator, which gives...
Tags: Microsoft SQL Server, Microsoft SQL Server 2005, Databases, Tim Chapman, CASE statement, PIVOT operator, statement query, CASE statement query, SQL Server Newsletter, Problem, Data, Statement, Operator, Difference, Listing B, PIVOT, CASE, Listing C, PIVOT Clause, Listing D, Enterprise Software, Software, Data Management
Technical articles 2006-12-18
Process non-consecutive array items in FORALL
Prior to Oracle 10g, the FORALL statement only accepted a consecutive range of index values for processing. Starting with Oracle 10g, the INDICES OF and VALUES OF clauses can be added to support non-consecutive processing of elements in a collection. Executing Data Manipulation Language DML statements within a...
Tags: Oracle Corp., FORALL, Databases, Bob Watkins, Programming languages, clause, Oracle Tips Newsletter, TechRepublic Inc., Statement, Oracle Application Server 10g, Application Servers, Enterprise Software, Software, Software Development, Software/Web Development, Data Management
Technical articles 2006-10-31
Generate external table definitions from SQL*Loader
External tables in Oracle enable you to query text files with the full power of the SQL language. Here is a quick way to create them using scripts generated by SQL*Loader. External tables, introduced in Oracle 9i, enable you to map a sequential text file to an Oracle...
Tags: Oracle Corp., SQL*Loader, Databases, Bob Watkins, external table, Oracle Tips Newsletter, Statement, Script, Programming Languages, Storage, Software Development, Software/Web Development, Enterprise Software, Software, Data Management, Hardware
Technical articles 2006-10-03


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