LINQ is one of the simplest ways to compose complicated LINQ Queries in a format that is both accessible and readable. This sort of query has a syntax that is very similar to SQL queries.

You can build a LINQ query by following specific principles in LINQ. The syntax is not the same as SQL. The syntax hierarchy must be followed while building a query in LINQ. The query syntax is identical to the database's SQL (Structured Query Language). It is specified in C# or VB code. The LINQ query syntax starts with from keyword and ends with the selected keyword.

The From clause comes first, followed by the Range variable in query syntax. Following the from clause, you can select, group, and connect components of the collection using Standard Query Operators. In LINQ, there are around 50 Standard Query Operators.

A Select or Group clause is always at the end of a LINQ query. The data is shaped using the Select clause. You can choose to choose the entire object or just some of its properties. In the preceding example, you have selected each of the string elements that were produced.

A LINQ query to an IEnumerable collection or an IQueryable data source can be written in two ways.

• Query Syntax or Query Expression Syntax
• Method Syntax or Method Extension Syntax or Fluent

Important points to note:

• Query Syntax is similar to SQL (Structured Query Language) syntax, as the name suggests.
• The from clause is the first clause in a query, and the Select or GroupBy clauses can follow it.
• The output of the LINQ query can be stored in an arbitrarily typed variable called var.
• To produce the desired result, use other operators such as filtering, joining, grouping, and sorting.