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Basic data types and data type conversions in C#

There are several data types in C# that are very simple and are the basis of all others, they are called predefined types or primitive types, and this article will explore these primitive data types. This article is reprinted from https://www.developerastrid.com/csharp/csharp-data-types/ This site is for inclusion only, and the copyright belongs to the original author.

Heard you want to learn C#? So let’s start with the HelloWorld program

This article uses the traditional HelloWorld program to introduce the basics of C# grammar. Through the study of this article, you will be familiar with the grammar style and structure of C#, and you can start to write the simplest C# program. This article is reprinted from https://www.developerastrid.com/csharp/csharp-introducing/ This site is for inclusion only, and …

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What is the SQL GROUPING operator and how to use the SQL GROUPING operator

This article describes what the SQL GROUPING operator is and how to use the SQL GROUPING operator. GROUPING Indicates whether to aggregate the specified column expressions in the GROUP BY list. This article is reprinted from https://www.developerastrid.com/sql/sql-grouping/ This site is for inclusion only, and the copyright belongs to the original author.

What are SQL Window Functions (Analytical Functions)

This article introduces what is an SQL window function. Window functions can perform advanced operations that cannot be achieved by general aggregate functions, such as sorting and generating serial numbers. This article is reprinted from https://www.developerastrid.com/sql/sql-olap/ This site is for inclusion only, and the copyright belongs to the original author.

How SQL uses views and subqueries for complex queries

This article describes how to use views and subqueries in SQL for complex queries. Since views and subqueries can be used like tables, more flexible SQL can be written if these techniques are used properly. This article is reprinted from https://www.developerastrid.com/sql/sql-view-subqueries/ This site is for inclusion only, and the copyright belongs to the original author.