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5 days ago · SQL Server 2019 (15.x) extends supplementary character support to the char and varchar data types with the new UTF-8 enabled collations . These data types are also capable of representing the full Unicode character range.
5 days ago · Joins indicate how SQL Server should use data from one table to select the rows in another table. A join condition defines the way two tables are related in a query by: Specifying the column from each table to be used for the join.
5 days ago · These features were removed from versions of SQL Server starting with SQL Server 2022 (16.x) and are no longer supported. SQL Server 2016, SQL Server 2017, and SQL Server 2019 are supported in maintenance mode until End of Service (EOS) for existing customers.
5 days ago · What is subquery in SQL? A subquery is a SQL query nested inside a larger query. A subquery can be located in : - A SELECT clause. - A FROM clause. - A WHERE clause. - A HAVING clause. The subquery can be nested inside a SELECT, INSERT, UPDATE, or DELETE statement or inside another subquery.
- A subquery SELECT statement is almost similar to the SELECT statement and it is used to begin a regular or outer query. Here is the syntax of a sub...
- INSERT statement can be used with subqueries. Here are the syntax and an example of subqueries using INSERT statement.Syntax:If we want to insert t...
- In a UPDATE statement, you can set new column value equal to the result returned by a single row subquery. Here are the syntax and an example of su...
- DELETE statement can be used with subqueries. Here are the syntax and an example of subqueries using DELETE statement. Syntax:If we want to delete...
19 hours ago · This official Microsoft link for GitHub contains sample databases for SQL Server, Azure SQL Database, and Azure SQL Data Warehouse. Hey, I'm Mark, one of the guys behind Red9. I make a living performance tuning SQL Servers and making them more stable. I channel my SQL into our SQL Managed Services, SQL Consulting and our internal database products.
5 days ago · This is a powerful feature that allows us to monitor and analyze various aspects of SQL Server’s behavior. We’ll go through the steps to set up an Extended Events session, run a sample stored procedure, and then query the captured data. Let’s dive in! Setting Up the Extended Events Session.
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4 days ago · This is the MySQL Reference Manual. It documents MySQL 8.0 through 8.0.39, as well as NDB Cluster releases based on version 8.0 of NDB through 8.0.38, respectively. It may include documentation of features of MySQL versions that have not yet been released.
