In SQL Server 2017, automatic plan correction was added, which allows for the database engine to automatically use the "last known good plan" for a query that has suddenly regressed in performance.

Structured Query Language (SQL) is a powerful and essential tool for working with relational databases. Whether you’re a beginner or looking to enhance your SQL skills, ChatGPT can be a valuable ...

You can use SQL to create, modify, search, and display database information. Dynamic SQL lets you create a query string based off of user input. SQL Server allows you to create dynamic SQL statements.

Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

A common SQL habit is to use SELECT * on a query, because it’s tedious to list all the columns you need. Plus, sometimes those columns may change over time, so why not just do things the easy way?

You'll learn the difference between the query language and databases, understand SQL Server structure, and learn how to insert and delete values in a table using SQL Statements.

This SQL feature allows you to query within a result set, creatively limit your result set, or correlate your results with an otherwise unrelated query in a single call to the database.

How to Use SQL Statements in MS Excel. With most Excel spreadsheets, you enter data manually into cells and then use formulas or other functions to analyze it or perform calculations. If you have ...

Spark SQL: Apache’s Spark project is for real-time, in-memory, parallelized processing of Hadoop data. Spark SQL builds on top of it to allow SQL queries to be written against data.