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Best File Recovery Software Forum' title='Best File Recovery Software Forum' />S2 Data Recovery Freeware.Cisco training materials come in a true manner that is effective for your bright success in 6.Copyright 2. 01. 3 S2 Services.The products on this site utilize Install.Monetizer. coms software recommendation platform.This valuable service helps us earn money which in turns helps us pay for resources such as server costs, product research, development, marketing, etc.Our goal is to develop amazing software for you our users at zero or low cost.Overview Install Monetizer is a software recommendation platform that enables software developers to recommend other software during installation of their application.Install Monetizer helps users discover other software and in exchange the software developers earn commission for facilitating this service.Recommendations for various software advertisers appear as full window advertorials.Only selected high quality advertisers are shown.Quality of Products Installed Advertisers working with Install.Monetizer monetize from the installs we provide in various methods from search updates, coupons to freemium products.They review each product through quality assurance before it is released.However, they recommend the software developer and end users to review the recommended software product, its privacy and terms before engaging with that advertiser.This is the same sort of engagement every user should do when installing any software Other quality checks recommendations are only shown during installing of the software developers product.Please remember Files32.Better yet, click here to bookmark us now so more than 32,000 free downloads are just one.Clone your drive sectorbysector using a tool eg ddrescue that knows how to work around bad sectors, and then use data recovery software on the clone.EaseUS deleted file recovery software, which is the best deleted file recovery software could recover deleted files from formatted, deleted or lost partition easily.No additional advertisers are recommended post install.They are shown a description of the product and links to all privacy and terms for each advertiser.Benefits of working with Install.Best File Recovery Software Forum' title='Best File Recovery Software Forum' />Monetizer Software developers need to generate money.They have to support their costs in server costs, product research, development, marketing and more.To cover their costs, they can either charge their users a cost to access their software products, or provide their software for free if end users try our recommended advertiser software.Most users want free software so Install Monetizers recommendation platform the preferred method in which software developers generate money.Privacy Install Monetizer values its users privacy.They are committed to ethical delivery advertising recommendation and delivery of recommended products.Best File Recovery Software Forum' title='Best File Recovery 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factors, may compromise the security of user information at any time.If you have feedback, questions or concerns contact us at Privacy, co Install Monetizer 5.Silver Creek Vly Rd 6.San Jose, CA 9. 51.You may also email us at supportinstallmonetizer.The products on this site utilize Install.Monetizer. coms software recommendation platform.This valuable service helps us earn money which in turns helps us pay for resources such as server costs, product research, development, marketing, etc.Our goal is to develop amazing software for you our users at zero or low cost.Overview Install Monetizer is a software recommendation platform that enables software developers to recommend other software during installation of their application.Install Monetizer helps users discover other software and in exchange the software developers earn commission for facilitating this service.Recommendations for various software advertisers appear as full window advertorials.Only selected high quality advertisers are shown.Quality of Products Installed Advertisers working with Install.Monetizer monetize from the installs we provide in various methods from search updates, coupons to freemium products.They review each product through quality assurance before it is released.However, they recommend the software developer and end users to review the recommended software product, its privacy and terms before engaging with that advertiser.This is the same sort of engagement every user should do when installing any software Other quality checks recommendations are only shown during installing of the software developers product.No additional advertisers are recommended post install.They are shown a description of the product and links to all privacy and terms for each advertiser.Benefits of working with Install.Monetizer Software developers need to generate money.They have to support their costs in server costs, product research, development, marketing and more.To cover their costs, they can either charge their users a cost to access their software products, or provide their software for free if end users try our recommended advertiser software. A Maturity Model Of Software As A Service Saas Architectures Requirements . Most users want free software so Install Monetizers recommendation platform the preferred method in which software developers generate money.Privacy Install Monetizer values its users privacy.They are committed to ethical delivery advertising recommendation and delivery of recommended products.They do not collect any personallyidentifiable information.In simple language this means, they dont know the name, gender, age, email, and interests of any users.To read their privacy policy in full, please find it below.In additional, each advertiser product recommended has its own privacy policy which each user can freely review before accepting any recommended product.Privacy Policy for Install.Monetizer Install Monetizer herein referred to as We or Install Monetizer regards each users privacy as important. Using the Microsoft Security Compliance Manager Tool.In part one of this three part series, I showed you how to import security.I also showed you how to configure and analyze security on a local server using secedit and the Security Configuration and Analysis tool.Microsoft Baseline Security Policy Security Template Windows 7' title='Microsoft Baseline Security Policy Security Template Windows 7' />However, these tools are designed to be used with a local server, which means limited management capabilities.In part two, Ill show you how to get started with Microsofts free Security Compliance Manager SCM tool.Well also learn how it can be used to manage security and Group Policy settings, along with tracking changes to baseline security templates.Download and Install Security Compliance Manager.You can download the latest version of the Security Compliance Manager from Microsoft.Its best to install SCM on a management workstation, although it is possible to install it directly on Windows Server 2.SCM requires the.NET Framework, and SQL Express Server 2.Microsoft Visual C are installed as part of the package.The following outlines steps for installing SCM Log on to the device where you want to install SCM.Download SCM using the link listed above.Run the downloaded.In the setup dialog box, accept the license agreement for Microsoft Visual C and click Install.Click Finish on the Installation is Complete screen.On the Welcome to the Microsoft Security Compliance Manager Setup Wizard screen, make sure that Always check for SCM and baseline updates is checked, and click Next.Check I accept the terms of the license agreement, and click Next.On the Install Folder screen, accept the default install location by clicking Next.Use these steps to restore your computers security settings to their default configurations.Applies to computers that are running Windows XP and Windows.Microsoft XNA a recursive acronym for XNAs not acronymed is a freeware set of tools with a managed runtime environment provided by Microsoft that facilitates video.ITALC Intelligent Teaching And Learning with Computers.TALC Intelligent Teaching And Learning with Computers.Sales GmbH.On the Microsoft SQL Server 2.Express screen, click Next.Accept the license agreement for SQL Server, and click Next.Click Install on the Ready to Install screen.If you get a warning from the Program Compatibility Assistant, click Run the program without getting help to continue.Figure_1_SCMWin7.jpg' alt='Microsoft Baseline Security Policy Security Template Windows' title='Microsoft Baseline Security Policy Security Template Windows' />This is a known issue when installing SQL Server 2.Express, even on supported OSes.Once the install has completed, click Finish.SCM starts automatically and imports the included security baseline templates, which may take a few minutes.If you need to start SCM again, you can find it in C Program Files x.Microsoft Security Compliance Manager.When you restart SCM for the first time, youll probably be prompted to download updated security templates.If you choose to download the updates, the Import Baselines Wizard will start.Click Run at the security prompt for each template.Any updated templates you choose to download should now appear in the wizard on the Select package files screen.Click Next to continue.On the Baseline details screen, click Import.Click Finish on the Results screen.Importing updated baseline templates into SCM.Image Russell SmithExploring Security Baselines in Security Compliance Manager.In the left pane of SCM, youll see all the imported baseline templates listed by product.At the time of writing, there are still no SCM baseline templates for Windows 8.Windows Server 2.R2 or Internet Explorer 1.Microsoft has made baselines available as a separate download, but it is still working on versions that are compatible with SCM.If you expand the Windows Server 2.Domain Controller and File Server.Microsoft recommends that organizations only apply Domain Controller, Domain Security, and Member Server security templates to servers.Templates for the other server roles include only settings that disable system services that are not required for the given functionality of the server.From time to time, this can cause compatibility issues with certain functions that need to start services on demand in specific scenarios.Changing configuration settings in a template.Image Russell SmithIn the left pane, click WS2.Happy Ringtones Free Download Telugu Movies on this page.Member Server Security Compliance 1.The settings for this template will then load in the central pane.Youll see along with the name of each setting, the default out of the box status for Windows Server 2.Youll also see Microsofts setting in this template, where Customized shows any changes that you have made to the template.If you click on a setting in the central pane, an additional box will appear that normally allows you to edit the setting, but because this is a baseline template thats provided by Microsoft, you need to duplicate it before you can make changes.Duplicate and Edit a Baseline Template.Lets start by duplicating the WS2.Member Server Security Compliance 1.Click the WS2. A Vida De Jesus Cristo Filme Download 2016 . Torrent Adobe Acrobat Professional Mac Download more. How To Disable Installing Software By Group Policy' title='How To Disable Installing Software By Group Policy' />Auto.Run Wikipedia. Auto.Run and the companion feature Auto.The Windows Group Policy grants you advanced control over your system, without having to mess with the registry.Well show you how to easily customize Windows in.Windows 8 Disable USB Group Policy.For maximum protection I recommend you test not one, but four settings to disable the USB drive.Step by step tutorials on how to setup Group Policy.Play are components of the Microsoft Windowsoperating system that dictate what actions the system takes when a drive is mounted.Auto. Run was introduced in Windows 9.When an appropriately configured CD ROM is inserted into a CD ROM drive, Windows detects the arrival and checks the contents for a special file containing a set of instructions.For a CD containing software, these instructions normally initiate installation of the software from the CD ROM onto the hard drive.To maximise the likelihood of installation success, Auto.Run also acts when the drive is accessed double clicked in Windows Explorer or My Computer.Until the introduction of Windows XP, the terms Auto.Run and Auto. Play were used interchangeably, developers often using the former term and end users the latter.This tendency is reflected in Windows Policy settings named Auto.Play that change Windows Registry entries named Auto.Run, and in the autorun.Auto. Play to be added to drives context menus.The terminology was of little importance until the arrival of Windows XP and its addition of a new feature to assist users in selecting appropriate actions when new media and devices were detected.This new feature was called Auto.Play and a differentiation between the two terms was created.Auto. Run, a feature of Windows Explorer actually of the shell.Windows 9. 5, enables media and devices to launch programs by use of command listed in a file called autorun.Primarily used on installation CD ROMs, the applications called are usually application installers.The autorun. inf file can also specify an icon which will represent the device visually in Explorer along with other advanced features.The terms Auto. Run and Auto.Play tend to be interchangeably used when referring to the initiating action, the action that detects and starts reading from discovered volumes.The flowchart illustration in the Auto.Play article shows how Auto.Run is positioned as a layer between Auto.Play and the Shell Hardware Detection service and may help in understanding the terminology.However, to avoid confusion, this article uses the term Auto.Run when referring to the initiating action.Auto. PlayeditAuto.Play is a feature introduced in Windows XP which examines removable media and devices and, based on content such as pictures, music or video files, launches an appropriate application to play or display the content.If available, settings in an autorun.Auto. Play is based on a set of handler applications registered with the Auto.Play system. Each media type Pictures, Music, Video can have a set of registered handlers which can deal with playing or display that type of media.Each hardware device can have a default action occurring on discovery of a particular media type, or the Auto.Play dialog can prompt the user what action to take.Auto. Run activationeditThe Auto.Run sequence starts with the initial discovery of a new device or new piece of media.Following this, notification of interested parties occurs, of which the Windows Explorer shell is of primary interest.After checking certain Registry settings to see if Auto.Run can proceed, parsing of an optional autorun.The initial sequence is handled much the same in every version of Windows from Windows 9.However, the way the autorun.Auto. Run with Auto.Play has changed significantly from the time Auto.Play was introduced in Windows XP until the present handling in Windows 7.In Windows 1. 0, Microsoft has added the option to enable autorun in its settings.Not only users can turn it on but also they can choose specific external devices for autoplay.Initiation and notificationeditWhen a device with Auto.Run compatible drivers receives new media, a Media Change Notification event occurs.The Windows OS then notifies interested applications that a device change has occurred.The notification method used can change depending on the device type.If the device changed is a volume like a CD or a port like a serial port Windows broadcasts a WMDEVICECHANGE notification to all top level windows. Insert Image Adobe Form Sap 520 . Windows calls this a basic notification.A top level window is one which is a descendant of the desktop.However, if the device changed is not one of these types an application can use the Register.Device. Notification4 function to register to receive device notifications.An article on the Code.Project website, Detecting Hardware Insertion andor Removal, with clarifications from a blog by Doran Holan is of particular technical interest here.Non volume devices are those devices that do not appear as drive letters in My Computer.These are not handled by any part of Auto.Run any actions taken for these devices are taken either by device specific software or by Auto.Play. See Auto. PlayDevices that are not drives.When Explorer receives notification of a volume change, it performs a number of actions 56Checks to see if Auto.Run has been disabled through the Registry.If Auto. Run is disabled for that drive or drive type, Explorer does not proceed further.There have been bugs in this area.Checks that the root directory of the inserted media contains an autorun.See below. Sends a Query.Cancel. Auto. Play message to the foreground window.An application which has registered its interest in receiving this message using Register.Window. Message can respond to this message to halt Auto.Run and thus Auto.Play at this point.Any application, foreground or not, can also be notified by using the IQuery.Cancel. Auto. Play.COM interface7 available in Windows XP and later.Alters double click and contextual menu behaviours.When a user double clicks on the drive icon in Explorer or right clicks to get a context menu, what happens is fully programmable by settings in the autorun.Adds an autorun. inf controllable icon and descriptive text to the drive icon.Checks to see if the Shift key is held down.If it is then Windows Vista and later Windows versions will invoke the Auto.Play dialog regardless of settings to the contrary.Previous versions of Windows will not continue with the process.Finally, if this point has been reached, either.Auto. Run task, the application optionally specified in the open or shellexecute keys in an autorun.Auto. Play. Which choice is made depends on the version of Windows in use, instructions from the autorun.Changing behavioureditBefore Auto.PlayeditOn Windows versions prior to Windows XP, an autorun.The Auto. Run task, if specified, is executed immediately without user interaction.This includes DRIVEREMOVABLE, DRIVEFIXED and DRIVEREMOTE drive types.Auto. Run will work with network drives the DRIVEREMOTE drive type that are mapped to a drive letter.Auto. Run will also work with floppy drives that are provided with autorun compatible drivers.The default Registry settings on Windows versions prior to Windows XP See No.Drive. Type. Auto.Run, disable Remote and Removable drives from Auto.Run initiation, leaving Fixed and CDROM drive types active by default.Introducing Auto.PlayeditWith the introduction of Auto.Play in Windows XP, the final stage action stage 7 above for some drive types changed from executing an application to invoking Auto.Play. From Windows Vista, the Auto.Play system is integrated into every aspect of media handling and there is no automatic execution of the Auto.Run task. The default Registry settings add Removable drives to those that initiated Auto.Run. In Windows XP and higher, except Windows Server 2.Unknown and Remote drive types are not active for Auto.Run. The handling of the autorun.Windows version. The details can be found in the autorun.The current handling in Windows 7 is that only drives of type DRIVECDROM may specify an Auto.Run task, alter double click behaviour or change context menus.Registry settingseditAuto.Run consults Windows Registry values to decide whether to initiate actions for any particular drive or drive type.These values can be changed using several methods, one of which is using Group Policy.The primary relevant Registry entry names are No.Drive. Type. Auto.Run and No. Drive.Auto. Run. These exist in both per machine and per user settings and their location and priority in the Registry are described in further detail below.Drive typeseditThe drive types are distinguished by Type Name as follows 1.Type namevalue. Description.DRIVEUNKNOWN0x. 00. Adblock Windows 7 Free Download Windows 7 adblock Windows 7 Download Free Windows7 Download. Battery Explodes at Turkish Airport After Passenger Throws Power Bank During Security Spat. Throwing things out of anger is never a smart move, but it can also lead to more serious consequences. Especially when youre at an airport and what youre hurling at the ground is an explosion prone lithium battery. This week, a man traveling to the UK caused a scene at Ataturk Airport in Istanbul, Turkey, when he furiously threw his mobile power bank, which are banned on flights between the countries. According to the airports official Twitter account, the man declined to surrender his power bank and began to argue with the airport employees at the gate before crashing the item on a hard surface. The minor explosion caused smoke to fill the gates lobby, but there were no reported injuries, AFP reports. The UKs electronics ban followed a similar one the US instituted on flights from several Muslim majority countries in March, which was lifted for Turkish flights on Wednesday. The UK has yet to follow. Homeland Security chief John Kelly has previously said the ban was put in place as a security measure against detected threats concerning bombs disguised as electronic devices. That obviously wasnt the case here. But let this serve as a reminder that everything with a lithium based rechargeable battery has the potential to burst into flames. Weve seen this with the infamous hoverboards, Samsung Galaxy Note 7, vapes, Fitbits, and even fidget spinners. Istanbul Airport via Twitter via Mashable. Luke Plunkett. Luke Plunkett is a Contributing Editor based in Canberra, Australia. He has written a book on cosplay, designed a game about airplanes, and also runs. Dance Complex BostonCambridge, MAMatei Livianu Hirlley Livianu.Salsa and Bachata Classes with Salsa Matei Dance School.Hip Hop Dance Teaching Video Series Teaching' title='Hip Hop Dance Teaching Video Series Teaching' />Pre registration suggested.Drop ins welcome.NO PARTNER REQUIRED for any class.We rotate partners throughout the class.What Is HipHop A Music, History, Art, and Culture Lesson.This lesson, reposted on Education World with permission from Seattle radio station KEXP, was created by.In 2005, Tabitha and Napoleon started Nappytabs dancewear.They cite the lack of appropriate dancewear for the hiphop dance community as inspiration for the company.All classes are 5 week progressive.Once students advance their skills, they can join higher levels.Contact infosalsamatei.Mondays Sexy Bachata Fundamentals Turn Patterns Styling L1L2 Mondays 6 3.Learn the fundamentals of one of the most popular club dances, LA Style Salsa We make it fun, with essential footwork and rhythm, leadingfollowing, body movement and isolation, and more in an upbeat setting.No partner or experience necessary.We rotate partners throughout the class.See the class FAQ for more information.Pre requisite None Beginner Salsa Turn Patterns Partnerwork L1 Mondays 8 0.Learn the fundamentals of one of the most popular club dances, LA Style Salsa We make it fun, with essential footwork and rhythm, leadingfollowing, body movement and isolation, and more in an upbeat setting.No partner or experience necessary.We rotate partners throughout the class. 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Best Free Recording Mixing Software .See the class FAQ for more informationPre requisite NoneBeginner 2 Salsa Turn Patterns Partnerwork L2 Mondays 9 0.Got the basics of salsa and ready for more Join us for Level 2 and build up your social dancing skills with core patterns, hip and arm styling, improved partner connection, and shines footwork.No partner necessary.We rotate partners throughout the class.Pre requisite Level I or equivalent.See the class FAQ for more information.Tuesdays Level Up Bachata Challenge Yourself L34 Tuesdays 7 0.Push your bachata to new levels of smoothness, sexiness, and consistency.Learn to lead and follow with confidence, dip like a pro, move your body in unison, and much more.This is not a dips and tricks class, its much more Get sassy with your fundamentals.Leran super close bachata without the awkwardness.Dancers must have bachata basics and simple right and left turns in hand.Pre requisite Bachata basics and basic turns.See the class FAQ for more information Salsa Level 3 Turn Patterns Partnerwork Tuesdays 8 0.Level 3 takes your dancing to the next level with more challenging patterns, and arm and body styling.You will learn to lead and execute more complex turn patterns and combine musicality and natural body movement into your dancing.Dancers in this level should be comfortable executing basics, right and left underarm turns, and cross body leads with outside turns.Dancers at this level should be adaptable to basic footwork patterns, and comfortable with simple styling.No partner necessary.We rotate partners throughout the class.Pre requisite Level II or equivalent.There are two sections of Level 3, A and B.Dancers should take all sections before testing for placement in higher levels.Sections can be taken in any order.See the class FAQ for more information.Salsa L4 Tuesdays 9 0.Level 4 pulls your skills together, with synchopated shines and technique, complex patterns, and intricate arm and body styling.You will learn to lead and follow combined patterns that flow, play off of the music and follow the breaks, and adapt your dancing to your partner.Dancers in this level should be comfortable executing inside and outside turns, solo spot turns, basic styling, and back break fundamentals such as copas and passes.Additionally, dancers at this level should be comfortable with variable shine patterns, and confident with all fundamentals.No partner necessary.We rotate partners throughout the class.Pre requisite Level III or equivalent.There are three sections of Level 4, A, B, and C.Dancers should take all sections before testing for placement in higher levels.Sections can be taken in any order.See the class FAQ for more information.Clothing Comfortable, since you will sweat a lot.Avoid baggy pants or shorts.We recommend dancing in leather soled shoes or socks to enable smooth turning.STREET SHOES ARE NOT ALLOWED IN ANY STUDIO AT ANY TIME.Bring It Full Episodes, Video More.S 4.E 1. 6Battle Royale Up in FlamesAired.Apr 2. Brent Ozar Unlimiteds specialized experts focus on your goals, diagnose your tough database pains, and make Microsoft SQL Server faster and more reliable. SQL Server 2016 Service Pack 1 SP1 CREATE OR ALTER ltobject syntax is now available for procedures, views, functions, and triggers. Support for a more generic query. The 1 SQL Server community and education site, with articles, news, forums, scripts and FAQs. This seems to be an area with quite a few myths and conflicting views. So what is the difference between a table variable and a local temporary table in SQL ServerSQL Tuning Overview. Often, rewriting an inefficient SQL statement is easier than modifying it. If you understand the purpose of a given statement, then you might be able to quickly and easily write a new statement that meets the requirement. Compose Predicates Using AND and To improve SQL efficiency, use equijoins whenever possible. Statements that perform equijoins on untransformed column values are the easiest to tune. Avoid Transformed Columns in the WHERE Clause. Use untransformed column values. For example, use. WHERE a. orderno b. WHERE TONUMBER SUBSTRa. INSTRb. orderno,. 1. TONUMBER SUBSTRa. INSTRb. orderno,. 1. Do not use SQL functions in predicate clauses or WHERE clauses. Any expression using a column, such as a function having the column as its argument, causes the optimizer to ignore the possibility of using an index on that column, even a unique index, unless there is a function based index defined that can be used. Avoid mixed mode expressions, and beware of implicit type conversions. When you want to use an index on the VARCHAR2 column charcol, but the WHERE clause looks like this. AND charcol numexprwhere numexpr is an expression of number type for example, 1, USERENVSESSIONID, numcol, numcol0., Oracle translates that expression into. AND TONUMBERcharcol numexpr. Avoid the following kinds of complex expressions col. NVL b. 1,col. 1NVL col. TODATE, TONUMBER, and so on. These expressions prevent the optimizer from assigning valid cardinality or selectivity estimates and can in turn affect the overall plan and the join method. Add the predicate versus using NVL technique. For example. SELECT employeenum, fullname Name, employeeid. FROM mtlemployeescurrentview. WHERE employeenum NVL b. AND organizationid 1. ORDER BY employeenum. SELECT employeenum, fullname Name, employeeid. FROM mtlemployeescurrentview. WHERE employeenum b. AND organizationid 1. ORDER BY employeenum. When you need to use SQL functions on filters or join predicates, do not use them on the columns on which you want to have an index rather, use them on the opposite side of the predicate, as in the following statement. TOCHARnumcol varcol. TOCHARnumcol. 1. Write Separate SQL Statements for Specific Tasks. SQL is not a procedural language. Using one piece of SQL to do many different things usually results in a less than optimal result for each task. If you want SQL to accomplish different things, then write various statements, rather than writing one statement to do different things depending on the parameters you give it. Note. Oracle Forms and Reports are powerful development tools that allow application logic to be coded using PLSQL triggers or program units. This helps reduce the complexity of SQL by allowing complex logic to be handled in the Forms or Reports. You can also invoke a server side PLSQL package that performs the few SQL statements in place of a single large complex SQL statement. Because the package is a server side unit, there are no issues surrounding client to database round trips and network traffic. It is always better to write separate SQL statements for different tasks, but if you must use one SQL statement, then you can make a very complex statement slightly less complex by using the UNIONALL operator. Optimization determining the execution plan takes place before the database knows what values will be substituted into the query. An execution plan cannot, therefore, depend on what those values are. For example. AND somecolumn BETWEEN DECODE loval, ALL, somecolumn, loval. AND DECODE hival, ALL, somecolumn, hival. Written as shown, the database cannot use an index on the somecolumn column, because the expression involving that column uses the same column on both sides of the BETWEEN. This is not a problem if there is some other highly selective, indexable condition you can use to access the driving table. Often, however, this is not the case. Frequently, you might want to use an index on a condition like that shown but need to know the values of loval, and so on, in advance. With this information, you can rule out the ALL case, which should not use the index. If you want to use the index whenever real values are given for loval and hival if you expect narrow ranges, even ranges where loval often equals hival, then you can rewrite the example in the following logically equivalent form. SELECT change this half of UNION ALL if other half changes info. AND somecolumn BETWEEN loval AND hival. AND hival ALL AND loval ALL. SELECT Change this half of UNION ALL if other half changes. AND hival ALL OR loval ALL. If you run EXPLAINPLAN on the new query, then you seem to get both a desirable and an undesirable execution plan. However, the first condition the database evaluates for either half of the UNIONALL is the combined condition on whether hival and loval are ALL. The database evaluates this condition before actually getting any rows from the execution plan for that part of the query. When the condition comes back false for one part of the UNIONALL query, that part is not evaluated further. Only the part of the execution plan that is optimum for the values provided is actually carried out. Because the final conditions on hival and loval are guaranteed to be mutually exclusive, only one half of the UNIONALL actually returns rows. The ALL in UNIONALL is logically valid because of this exclusivity. It allows the plan to be carried out without an expensive sort to rule out duplicate rows for the two halves of the query. 1. Use of EXISTS versus IN for Subqueries. In certain circumstances, it is better to use IN rather than EXISTS. In general, if the selective predicate is in the subquery, then use IN. If the selective predicate is in the parent query, then use EXISTS. Note. This discussion is most applicable in an OLTP environment, where the access paths either to the parent SQL or subquery are through indexed columns with high selectivity. In a DSS environment, there can be low selectivity in the parent SQL or subquery, and there might not be any indexes on the join columns. In a DSS environment, consider using semijoins for the EXISTS case. Sometimes, Oracle can rewrite a subquery when used with an IN clause to take advantage of selectivity specified in the subquery. This is most beneficial when the most selective filter appears in the subquery and there are indexes on the join columns. Conversely, using EXISTS is beneficial when the most selective filter is in the parent query. This allows the selective predicates in the parent query to be applied before filtering the rows against the EXISTS criteria. Note. You should verify the optimizer cost of the statement with the actual number of resources used BUFFERGETS, DISKREADS, CPUTIME from VSQLSTATS or VSQLAREA. Situations such as data skew without the use of histograms can adversely affect the optimizers estimated cost for an operation. Example 1 Using IN Selective Filters in the Subquery and Example 2 Using EXISTS Selective Predicate in the Parent are two examples that demonstrate the benefits of IN and EXISTS. Both examples use the same schema with the following characteristics There is a unique index on the employees. There is an index on the orders. There is an index on the employees. The employees table has 2. The orders table has 1. The OE and HR schemas, which own these segments, were both analyzed with COMPUTE. Example 1 Using IN Selective Filters in the Subquery. This example demonstrates how rewriting a query to use IN can improve performance. This query identifies all employees who have placed orders on behalf of customer 1. The following SQL statement uses EXISTS. SELECT EXISTS example. FROM employees e. WHERE EXISTS SELECT 1 FROM orders o Note 1. WHERE e. employeeid o. Note 2. AND o. Note 3. Notes Note 1 This shows the line containing EXISTS. Note 2 This shows the line that makes the subquery a correlated subquery. Note 3 This shows the line where the correlated subqueries include the highly selective predicate customerid number. The following plan output is the execution plan from VSQLPLAN for the preceding statement. The plan requires a full table scan of the employees table, returning many rows. Each of these rows is then filtered against the orders table through an index. ID OPERATION OPTIONS OBJECTNAME OPT COST. Teach the Children Well Technology. Online Punjabi Typing Practice in RAAVI font Start Practice in Punjabi Language in RAAVI font As you know that, Punjab Subordinate Service Selection Board. Store share your files with uploaded.Learn more about our services videoAfter entering your e. 1966 Mustang Fan Shroud Installation Software . Mail addres and receipt of your registration youll simultaneously receive your personal access data from us.This is always free of charge.Download Update. Star Update.Star. 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