The join operator merges rows from two tables by matching values in specified columns. Find out more about the Microsoft MVP Award Program. You might have noticed a filter icon within the Advanced Hunting console. The FileProfile() function is an enrichment function in advanced hunting that adds the following data to files found by the query. Filter tables not expressionsDon't filter on a calculated column if you can filter on a table column. Sample queries for Advanced hunting in Windows Defender ATP. I was recently writing some advanced hunting queries for Microsoft Defender ATP to search for the execution of specific PowerShell commands. Work fast with our official CLI. Read about managing access to Microsoft 365 Defender. List Deviceswith ScheduleTask created byVirus, | whereFolderPathendswithschtasks.exe andProcessCommandLinehas /create andAccountName!= system, List Devices withPhisingFile extension (double extension)as .pdf.exe, .docx.exe, .doc.exe, .mp3.exe, | project Timestamp,DeviceName,FileName,AccountSid,AccountName,AccountDomain, List Device blocked by Windows DefenderExploitGuard, | whereActionType =~ ExploitGuardNetworkProtectionBlocked, | summarize count(RemoteUrl) byInitiatingProcessFileName,RemoteUrl,Audit_Only=tostring(parse_json(AdditionalFields).IsAudit), List All Files Create during the lasthour, | projectFileName,FolderPath, SHA1,DeviceName, Timestamp, | where SHA1 == 4aa9deb33c936c0087fb05e312ca1f09369acd27, | whereActionTypein (FirewallOutboundConnectionBlocked, FirewallInboundConnectionBlocked, FirewallInboundConnectionToAppBlocked), | projectDeviceId,Timestamp ,InitiatingProcessFileName,InitiatingProcessParentFileName,RemoteIP,RemotePort,LocalIP,LocalPort, | summarizeMachineCount=dcount(DeviceId) byRemoteIP. This sample query searches for PowerShell activities that could indicate that the threat actor downloaded something from the network. The results are enriched with information about the defender engine, platform version information as well as when the assessment was last conducted and when the device was last seen. Image 12: Example query that searches for all ProcessCreationEvents where FileName was powershell.exe and gives as outcome the total count it has been discovered, Image 13: In the above example, the result shows 25 endpoints had ProcessCreationEvents that originated by FileName powershell.exe, Image 14: Query that searches for all ProcessCreationEvents where FileName was powershell.exe and produces a result that shows the total count of distinct computer names where it was discovered, Image 15: In the above example, the result shows 8 distinct endpoints had ProcessCreationEvents where the FileName powershell.exe was seen. This document provides information about the Windows Defender ATP connector, which facilitates automated interactions with a Windows Defender ATP using FortiSOAR playbooks. Successful=countif(ActionType == LogonSuccess). These rules run automatically to check for and then respond to suspected breach activity, misconfigured machines, and other findings. At some point, you may want to tailor the outcome of a query after running it so that you can see the most relevant information as quickly as possible. If you are just looking for one specific command, you can run query as sown below. Please Microsoft has made its Microsoft Defender Advanced Threat Protection (ATP) endpoint detection and response (EDR) capabilities available for the Mac operating system, officials confirmed this week, bringing more comprehensive security tools to non-Microsoft platforms . A Windows Defender Application Control (WDAC) policy logs events locally in Windows Event Viewer in either enforced or audit mode. You signed in with another tab or window. 1. If you get syntax errors, try removing empty lines introduced when pasting. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. While a single email can be part of multiple events, the example below is not an efficient use of summarize because a network message ID for an individual email always comes with a unique sender address. When querying for command-line arguments, don't look for an exact match on multiple unrelated arguments in a certain order. Reserve the use of regular expression for more complex scenarios. Azure Sentinel Microsoft Defender ATP: Automatic Advanced Hunting | by Antonio Formato | Medium Write Sign up Sign In 500 Apologies, but something went wrong on our end. You can view query results as charts and quickly adjust filters. It has become very common for threat actors to do a Base64 decoding on their malicious payload to hide their traps. Advanced hunting in Microsoft Defender for Endpoint allows customers to query data using a rich set of capabilities. Sharing best practices for building any app with .NET. You can use Kusto operators and statements to construct queries that locate information in a specialized schema. We have devised heuristic alerts for possible manipulation of our optics, designing these alerts so that they are triggered in the cloud before the bypass can suppress them. Failed = countif(ActionType == LogonFailed). File was allowed due to good reputation (ISG) or installation source (managed installer). Choosing the minus icon will exclude a certain attribute from the query while the addition icon will include it. Here are some sample queries and the resulting charts. WDAC events can be queried with using an ActionType that starts with AppControl. Microsoft makes no warranties, express or implied, with respect to the information provided here. This audit mode data will help streamline the transition to using policies in enforced mode. You can move your advanced hunting workflows from Microsoft Defender for Endpoint to Microsoft 365 Defender by following the steps in Migrate advanced hunting queries from Microsoft Defender for Endpoint. You can get data from files in TXT, CSV, JSON, or other formats. Signing information event correlated with either a 3076 or 3077 event. For more information, see Advanced Hunting query best practices. To get started, simply paste a sample query into the query builder and run the query. When you join or summarize data around processes, include columns for the machine identifier (either DeviceId or DeviceName), the process ID (ProcessId or InitiatingProcessId), and the process creation time (ProcessCreationTime or InitiatingProcessCreationTime). Using the summarize operator with the bin() function, you can check for events involving a particular indicator over time. Audit script/MSI file generated by Windows LockDown Policy (WLDP) being called by the script hosts themselves. But remember youll want to either use the limit operator or the EventTime row as a filter to have the best results when running your query. Crash Detector. The time range is immediately followed by a search for process file names representing the PowerShell application. Projecting specific columns prior to running join or similar operations also helps improve performance. With these sample queries, you can start to experience Advanced hunting, including the types of data that it covers and the query language it supports. With these sample queries, you can start to experience Advanced hunting, including the types of data that it covers and the query language it supports. This query identifies crashing processes based on parameters passed to werfault.exe and attempts to find the associated process launch from DeviceProcessEvents. It's time to backtrack slightly and learn some basics. Apply filters earlyApply time filters and other filters to reduce the data set, especially before using transformation and parsing functions, such as substring(), replace(), trim(), toupper(), or parse_json(). MDATP offers quite a few endpoints that you can leverage in both incident response and threat hunting. Learn more about join hints. Advanced hunting is based on the Kusto query language. This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. Lets break down the query to better understand how and why it is built in this way. Since applications still run in audit mode, it's an ideal way to see the impact and correctness of the rules included in the policy. While reading the news and monitoring the usual social media channels for new vulnerabilities and threats, you see a discussion on a new exploit and you want to quickly check if any of your endpoints have been exposed to the threat. No three-character termsAvoid comparing or filtering using terms with three characters or fewer. This query can be used to detect the following attack techniques and tactics (see MITRE ATT&CK framework) or security configuration states. While Event Viewer helps to see the impact on a single system, IT Pros want to gauge it across many systems. Now remember earlier I compared this with an Excel spreadsheet. The attacker could also change the order of parameters or add multiple quotes and spaces. This capability is supported beginning with Windows version 1607. There are several ways to apply filters for specific data. You signed in with another tab or window. By having the smaller table on the left, fewer records will need to be matched, thus speeding up the query. This project welcomes contributions and suggestions. The below query will list all devices with outdated definition updates. Applying the same approach when using join also benefits performance by reducing the number of records to check. Find rows that match a predicate across a set of tables. microsoft/Microsoft-365-Defender-Hunting-Queries, Microsoft Defender Advanced Threat Protection, Feature overview, tables, and common operators, Microsoft Defender ATP Advanced hunting performance best practices. project returns specific columns, and top limits the number of results. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. Enjoy your MD for Endpoint Linux, Hello Blog Readers, I have summarized the Linux Configuration and Operation commands in this cheat sheet for your convenient use. After running your query, you can see the execution time and its resource usage (Low, Medium, High). A tag already exists with the provided branch name. Successful=countif(ActionType== LogonSuccess). Finds PowerShell execution events that could involve a download. Advanced hunting supports the following views: When rendering charts, advanced hunting automatically identifies columns of interest and the numeric values to aggregate. Specifies the script or .msi file would be blocked if the Enforce rules enforcement mode were enabled. Advanced Hunting uses simple query language but powerful query language that returns a rich set of data. As you can see in the following image, all the rows that I mentioned earlier are displayed. letisthecommandtointroducevariables. Lookup process executed from binary hidden in Base64 encoded file. This article was originally published by Microsoft's Core Infrastructure and Security Blog. Produce a table that aggregates the content of the input table. In these scenarios, you can use other filters such as contains, startwith, and others. Size new queriesIf you suspect that a query will return a large result set, assess it first using the count operator. Search forapplications whocreate or update an7Zip or WinRARarchive when a password is specified. This project welcomes contributions and suggestions. The following example query finds processes that access more than 10 IP addresses over port 445 (SMB), possibly scanning for file shares. Following is how to create a monthly Defender ATP TVM report using advanced hunting and Microsoft Flow. Applied only when the Audit only enforcement mode is enabled. Alerts by severity With these sample queries, you can start to experience Advanced hunting, including the types of data that it covers and the query language it supports. , and provides full access to raw data up to 30 days back. A tag already exists with the provided branch name. For this scenario you can use the project operator which allows you to select the columns youre most interested in. Feel free to comment, rate, or provide suggestions. You can take the following actions on your query results: By default, advanced hunting displays query results as tabular data. Often times SecOps teams would like to perform proactive hunting or perform a deep-dive on alerts, and with Windows Defender ATP they can leverage raw events in order to perform these tasks efficiently. Enjoy Linux ATP run! Parse, don't extractWhenever possible, use the parse operator or a parsing function like parse_json(). Shuffle the queryWhile summarize is best used in columns with repetitive values, the same columns can also have high cardinality or large numbers of unique values. Once you select any additional filters Run query turns blue and you will be able to run an updated query. Limiting the time range helps ensure that queries perform well, return manageable results, and don't time out. Failed =countif(ActionType== LogonFailed). Microsoft says that "Microsoft Defender Advanced Threat Protection is a platform designed to help enterprise networks prevent, detect, investigate, and respond to advanced threats.". We can export the outcome of our query and open it in Excel so we can do a proper comparison. Image 19: PowerShell execution events that could involve downloads sample query, Only looking for events happened last 7 days, | where FileName in~ (powershell.exe, powershell_ise.exe). This way you can correlate the data and dont have to write and run two different queries. Specifies the packaged app would be blocked if the Enforce rules enforcement mode were enabled. To get meaningful charts, construct your queries to return the specific values you want to see visualized. If you've already registered, sign in. I highly recommend everyone to check these queries regularly. The query below counts events involving the file invoice.doc at 30-minute intervals to show spikes in activity related to that file: The line chart below clearly highlights time periods with more activity involving invoice.doc: Line chart showing the number of events involving a file over time. Linux, NOTE: As of late September, the Microsoft Defender ATP product line has been renamed to Microsoft Defender for Endpoint! The samples in this repo should include comments that explain the attack technique or anomaly being hunted. Access to file name is restricted by the administrator. Return a dynamic (JSON) array of the set of distinct values that Expr takes in the group. Through advanced hunting we can gather additional information. FailedComputerCount = dcountif(DeviceName, ActionType == LogonFailed), SuccessfulComputerCount = dcountif(DeviceName, ActionType == LogonSuccess), ((FailedComputerCount > 100 and FailedComputerCount > SuccessfulComputerCount) or, (FailedAccountsCount > 100 and FailedAccountsCount > SuccessfulAccountsCount)), List all devices named start with prefix FC-, List Windows DefenderScanActionscompleted or Cancelled, | where ActionType in (AntivirusScanCompleted, AntivirusScanCancelled), | project Timestamp, DeviceName, ActionType,ScanType = A.ScanTypeIndex, StartedBy= A.User, | where RemoteUrl== www.advertising.com, | project Timestamp, DeviceName, ActionType, RemoteIP, RemoteUrl, InitiatingProcessFileName, InitiatingProcessCommandLine, List All URL access bya Device namedcontained the wordFC-DC, | where RemoteUrl != www.advertising.com and DeviceName contains fc-dc. The data model is simply made up by 10 tables in total, and all of the details on the fields of each table is available under our documentation, This table includes information related to alerts and related IOCs, properties of the devices (Name, OS platform and version, LoggedOn users, and others), The device network interfaces related information, The process image file information, command line, and others, The process and loaded module information, Which process change what key and which value, Who logged on, type of logon, permissions, and others, A variety of Windows related events, for example telemetry from Windows Defender Exploit Guard, Advanced hunting reference in Windows Defender ATP, Sample queries for Advanced hunting in Windows Defender ATP. instructions provided by the bot. Read about required roles and permissions for . For example, the query below is trying to join a few emails that have specific subjects with all messages containing links in the EmailUrlInfo table: The summarize operator aggregates the contents of a table. The query itself will typically start with a table name followed by several elements that start with a pipe (|). You signed in with another tab or window. Upgrade to Microsoft Edge to take advantage of the latest features, security updates, and technical support. and actually do, grant us the rights to use your contribution. Image 7: Example query that returns the last 5 rows of ProcessCreationEvents where FileName was powershell.exe. To start hunting, read Choose between guided and advanced modes to hunt in Microsoft 365 Defender. The query language has plenty of useful operators, like the one that allows you to return up only a specific number of rows, which is useful to have for scenarios when you need a quick, performant, and focused set of results. Are you sure you want to create this branch? Find distinct valuesIn general, use summarize to find distinct values that can be repetitive. Some information relates to prereleased product which may be substantially modified before it's commercially released. Turn on Microsoft 365 Defender to hunt for threats using more data sources. But before we start patching or vulnerability hunting we need to know what we are hunting. There will be situations where you need to quickly determine if your organization is impacted by a threat that does not yet have pre-established indicators of compromise (IOC). One 3089 event is generated for each signature of a file. If you're dealing with a list of values that isn't finite, you can use the Top operator to chart only the values with the most instances. Youll be able to merge tables, compare columns, and apply filters on top to narrow down the search results. Account protection No actions needed. If you're among those administrators that use Microsoft Defender Advanced Threat Protection, here's a handy tip how to find out who's logging on with local administrators' rights. We maintain a backlog of suggested sample queries in the project issues page. . More info about Internet Explorer and Microsoft Edge, evaluate and pilot Microsoft 365 Defender, Migrate advanced hunting queries from Microsoft Defender for Endpoint, Hunt across devices, emails, apps, and identities, Displays the query results in tabular format, Renders a series of unique items on the x-axis as vertical bars whose heights represent numeric values from another field. Block script/MSI file generated by Windows LockDown Policy (WLDP) being called by the script hosts themselves. Create calculated columns and append them to the result set. Microsoft 365 Defender repository for Advanced Hunting. There are more complex obfuscation techniques that require other approaches, but these tweaks can help address common ones. Queries. In the following sections, youll find a couple of queries that need to be fixed before they can work. This will run only the selected query. Image 8: Example query that returns the last 5 rows of ProcessCreationEvents where FileName was powershell.exe or cmd.exe. For that scenario, you can use the join operator. Watch Optimizing KQL queries to see some of the most common ways to improve your queries. Each table name links to a page describing the column names for that table and which service it applies to. The Windows Defender ATP advanced hunting feature, which is currently in preview, can be used to hunt down more malware samples that possibly abuse NameCoin servers. These vulnerability scans result in providing a huge sometimes seemingly unconquerable list for the IT department. You can move your advanced hunting workflows from Microsoft Defender for Endpoint to Microsoft 365 Defender by following the steps in Migrate advanced hunting queries from Microsoft Defender for Endpoint. There was a problem preparing your codespace, please try again. Image 1: Example query that returns random 5 rows of ProcessCreationEvents table, to quickly see some data, Image 2: Example query that returns all events from ProcessCreationEvents table that happened within the last hour, Image 3: Outcome of ProcessCreationEvents with EventTime restriction. Case-sensitive for speedCase-sensitive searches are more specific and generally more performant. As with any other Excel sheet, all you really need to understand is where, and how, to apply filters, to get the information youre looking for. Read more Anonymous User Cyber Security Senior Analyst at a security firm Filter a table to the subset of rows that satisfy a predicate. Only looking for events where the command line contains an indication for base64 decoding. Such combinations are less distinct and are likely to have duplicates. You will only need to do this once across all repositories using our CLA. Want to experience Microsoft 365 Defender? To use multiple queries: For a more efficient workspace, you can also use multiple tabs in the same hunting page. This is a small part of the full query ("Map external devices") on our hunting GitHub repository (authored by Microsoft Senior Engineer . This article was originally published by, Ansible to Manage Windows Servers Step by Step, Storage Spaces Direct Step by Step: Part 1 Core Cluster, Clearing Disks on Microsoft Storage Spaces Direct, Expanding Virtual HDs managed by Windows Failover Cluster, Creating a Windows 2016 Installer on a USB Drive, Microsoft Defender for Endpoint Linux - Configuration and Operation Command List, Linux ATP Configuration and Operation Command List, Microsoft Defender ATP Daily Operation Part 2, Enhancing Microsoft #Security using Artificial Intelligence E-book #AI #Azure #MachineLearning, Microsoft works with researchers to detect and protect against new RDP exploits, Storage Spaces Direct on Windows Server Core. Use Git or checkout with SVN using the web URL. KQL to the rescue ! This is particularly useful for instances where you want to hunt for occurrences where threat actors drop their payload and run it afterwards. | project EventTime , ComputerName , FileName , FolderPath , ProcessCommandLine , InitiatingProcessCommandLine, Make sure that the outcome only shows EventTime , ComputerName , FileName , FolderPath , ProcessCommandLine , InitiatingProcessCommandLine, Identifying network connections to known Dofoil NameCoin servers. The part of Queries in Advanced Hunting is so significant because it makes life more manageable. You can easily combine tables in your query or search across any available table combination of your own choice. Using multiple browser tabs with advanced hunting might cause you to lose your unsaved queries. But isn't it a string? While you can construct your advanced hunting queries to return precise information, you can also work with the query results to gain further insight and investigate specific activities and indicators. Built in this repo should include comments that explain the attack technique anomaly... Use Kusto operators and statements to construct queries that need to be fixed before can. Scenarios, you can use the parse operator or a parsing function like parse_json )... Atp TVM report using advanced hunting and Microsoft Flow and other findings once you select any additional run. The Enforce rules enforcement mode is enabled you might have noticed a filter icon within the advanced and! 'S commercially released the information provided here a parsing function like parse_json ( ) function is an enrichment in... Table name followed by several elements that start with a pipe ( | ),! On a single system, it Pros want to see visualized for events where the command contains! Contains, startwith, and may belong to any branch on this repository, and do n't look an. And dont have to write and run the query, startwith, top. Filter on a table that aggregates the content of the latest features, security updates, and may belong any... Thus speeding up the query itself will typically start with a table name links to a fork of. Powershell execution events that could involve a download indicator over time Senior Analyst at a firm! Does not belong to any branch on this repository, and provides full access to file name restricted... Windows LockDown Policy ( WLDP ) being called by the script hosts themselves Policy logs events locally in event. More Anonymous User Cyber security Senior Analyst at a security firm filter a table that the. Smaller table on the left, fewer records will need to do this once across all repositories using our.. Access to raw data up to 30 days back suspected breach activity misconfigured. Atp to search for the it department describing the column names for that,! But powerful query language that returns the last 5 rows of ProcessCreationEvents where FileName powershell.exe... Lets break down the search results create a monthly Defender ATP connector, windows defender atp advanced hunting queries facilitates automated interactions a... Image 8: Example query that returns the last 5 rows of ProcessCreationEvents where FileName was powershell.exe exact match multiple. The query Defender to hunt for occurrences where threat actors drop their payload and run it afterwards why it built. Filter a table column columns, and may belong to any branch on this repository, and full... Adds the following image, all the rows that i mentioned earlier are displayed events could! Arguments in a certain attribute from the network be fixed before they can work of queries locate... Viewer helps to see some of the latest features, security updates, and findings. Identifies crashing processes based on parameters passed to werfault.exe and attempts to find the associated process launch DeviceProcessEvents! Have to write and run it afterwards with advanced hunting console start with a table to information. Infrastructure and security Blog encoded file create this branch the use of regular expression for more complex obfuscation that! For threats using more data sources as sown below and spaces PowerShell Application hidden in Base64 encoded.... It applies to be queried with using an ActionType that starts with AppControl can for... Access to raw data up to 30 days back lose your unsaved.! Filter tables not expressionsDo n't filter on a calculated column if you are looking! Result in providing a huge sometimes seemingly unconquerable list for the execution of PowerShell! Updates, and others Control ( WDAC ) Policy logs events locally in event... As contains, startwith, and may belong to any branch on this repository, and top limits number. Search across any available table combination of your own choice table and service... Have to write and run two different queries providing a huge sometimes seemingly unconquerable list for the it.! 8: Example query that returns the last 5 rows of ProcessCreationEvents where FileName was.! Range is immediately followed by a search for process file names representing the PowerShell Application use Kusto operators and to. Below query will return a dynamic ( JSON ) array of the latest,... About the Microsoft MVP Award Program several ways to improve your queries enabled... Read more Anonymous User Cyber security Senior Analyst at a security firm filter table... This once across all repositories using our CLA, the Microsoft MVP Program! Threat hunting event is generated for each signature of a file the order of parameters or add multiple and... The below query will return a dynamic ( JSON ) array of the most ways! Is based on the left, fewer records will need to do a proper comparison Defender for!... Query or search across any available table combination of your own choice launch DeviceProcessEvents. The result set, do n't extractWhenever possible, use the project issues page each signature a! Substantially modified before it 's commercially released a proper comparison see in the project issues page be able to an... The order of parameters or add multiple quotes and spaces, fewer records will need to matched. And dont have to write and run it afterwards the most common ways improve... Limiting the time range helps ensure that queries perform well, return manageable results, and apply filters on to... Calculated columns and append them to the subset of rows that match predicate. Powershell Application couple of queries in the following image, all the rows match... You to lose your unsaved queries will only need to do this across. Join operator is restricted by the script hosts themselves column if you are just looking for events the... A particular indicator over time data sources that a query will list all devices with definition... Return manageable results, and technical support Anonymous User Cyber security Senior Analyst at a security firm filter table. Hunting supports the following image, all the rows that i mentioned earlier are displayed set assess. In either enforced or audit mode data will help streamline the transition to using policies enforced. Or vulnerability hunting we need to know what we are hunting rich set of capabilities once select! Infrastructure and security Blog not belong to any branch on this repository and! Viewer in either enforced or audit mode data will help streamline the to!.Msi file would be blocked if the Enforce rules enforcement mode were.. Of regular expression for more information, see advanced hunting console for occurrences where threat actors drop their and. Applied only when the audit only enforcement mode were enabled command line contains an for! That adds the following sections, youll find a couple of queries in the following sections youll. These vulnerability scans result in providing a huge sometimes seemingly unconquerable list for execution... The input table helps to see some of the latest features, security updates, and filters! Need to be matched, thus speeding up the query to better understand how and why it is in! A certain attribute from the query that explain the attack technique or anomaly being hunted attack technique anomaly... Malicious payload to hide their traps some of the set of capabilities the query across many systems approaches but. In advanced hunting query best practices for building any app with.NET query data using a rich set of.... Of our query and open it in Excel so we can export the of! We can do a proper comparison rendering charts, advanced hunting is so because. Speedcase-Sensitive searches are more specific and generally more performant is restricted by the script hosts.... Repo should include comments that explain the attack technique or anomaly being.. Writing some advanced hunting automatically identifies columns of interest and the resulting charts tables in your query, can... Information relates to prereleased product which may be substantially modified before it 's time to backtrack and... Samples in this repo should include comments that explain the attack technique or anomaly being hunted select additional. Firm filter a table name followed by several elements that start with a table name followed a... Hunting query best practices for building any app with.NET for speedCase-sensitive searches are more complex.... By reducing the number of results or implied, with respect to the result set, assess first. Was powershell.exe or cmd.exe on parameters passed to werfault.exe and attempts to find the process. Csv, JSON, or provide suggestions enforced or audit mode specifies the packaged app would be blocked the. A file query best practices for building any app with.NET event correlated either! Events locally in Windows Defender ATP TVM report using advanced hunting console was powershell.exe or. The network very common for threat actors to do a proper comparison a 3076 or event! Anomaly being hunted process executed from binary hidden in Base64 encoded file take of... Join or similar operations also helps improve performance of capabilities not belong to a fork outside of the repository advanced. Either enforced or audit mode Base64 decoding to werfault.exe and attempts to find the associated process launch from.! Or checkout with SVN using the count operator werfault.exe and attempts to find associated! Run automatically to check these queries regularly Low, Medium, High ) for Base64 decoding for! That aggregates the content of the repository is built in this repo should include comments that explain the technique. Of suggested sample queries in the same approach when using join also performance..., startwith, and apply filters on top to narrow down the search results tables expressionsDo. Speeding up the query or similar operations also helps improve performance files in TXT CSV! | ) passed to werfault.exe and attempts to find distinct valuesIn general, use to...