![]() In the majority of cases, the Estimated and Actual Execution Plans are the same. The Actual Execution Plan is how the query ended up being executed. The Estimated Execution Plan is the initial query plan the optimization engine comes up with. Query or execution plans come in three flavors. We've seen query plans in the Query Store, so let's look at them in more detail. To get the most out of this course, you should be familiar with SQL query syntax, SQL data types, and SQL table structure. This course is aimed at database administrators, data engineers, or anyone who wants to learn how to improve database query execution. Understand how database compression can impact performance.Use database file configuration to improve performance.Learn how to design tables to make queries more efficient.Understand how different query types can be used.Use execution plans to see how a query is executed.Learn how the SQL Server engine processes queries.Understand what impacts query performance when using SQL.Using that information, we look at other factors like table and index design that can positively or negatively impact your query execution.įor any feedback relating to this course, please contact us at Learning Objectives This course looks at ways that you can see how the SQL Server engine views your queries and how it intends to execute them. What sets SQL and database programming apart from most other computer programming is the vast amount of data that is regularly dealt with, and how other factors that are not immediately obvious can impact the SQL query code you write. And like other software languages, some ways will be better and more efficient than others. When a performance issue arises, Redgate SQL Monitor provides additional information to help determine the cause.SQL is the language for interacting with databases, and like all computer languages, there are many ways to achieve the right result. Help for resolving query performance issues.A customizable alert system, allowing users to set a custom metric alert threshold in addition to the standard Machine, SQL Server and Database metrics.A detailed dashboard updating in 15-second intervals, displaying CPU, memory, disk usage, reads and writes, and database wait times.Redgate SQL Monitor is a query optimization tool that features customizable alerts, custom reporting, and a dashboard for monitoring SQL performance. The tool comes with a two-week free trial and several paid versions with a different number of features. SentryOne allows users to automate the query tuning process by setting which database action to perform when a threshold condition is triggered. The image above shows the SentryOne start page with a graphical representation of alerts, CPU and memory usage, etc. A threshold-based alert system notifying the users about performance issues.Preconfigured SQL sensors to monitor individual databases.A dashboard displaying query execution times, network state, and any query performance issues.PRTG Network Monitor makes SQL query monitoring and optimization simple and measures the time needed for executing SQL query requests. The Paessler PRTG Network Monitor tool monitors Microsoft SQL, MySQL, Oracle SQL, and PostgreSQL databases. The tool comes with a fully functional 14-day free trial. The SolarWinds Analyzer supports Azure SQL databases, MySQL, Aurora, ASE, Oracle, MariaDB, and IBM Db2. Color-coded graphs for each information category.Database status, including wait time, tuning, CPU, memory, and disk statistics.Top Waits for SQL that displays network state and performance.Some of SolarWinds Analyzer features are: The image above shows color-coded graphs depicting wait times in SolarWinds Analyzer. The image shows SQL analysis and a visual query tuning diagram in SQL Query Tuner. Users can run queries multiple times simultaneously and see how they behave in a simulated environment, avoiding the risk of testing the query in production. Table statistics displaying table indexes, constraints, and JOINS used in an SQL statement.Visual query tuning diagrams representing query performance impact.Generating possible SQL query rewrites and best alternatives. ![]() Color-coded analysis of used, unused, and missing indexes.The Tuner automatically generates tuning recommendations through the SQL query tuning wizard and verifies query performance via load testing in simulated production environments. The tool allows users to identify problematic queries via database profiling and wait time analysis and graphically represent the results. ![]() SQL Query Tuner is an add-on for SQL Diagnostic Manager. SQL Query Tuner for SQL Diagnostic Manager Toad for Oracle comes in several versions with varying prices for different functionalities and includes a 30-day free trial. ![]()
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