SQL Guide - SQL Server
 This Structured Query Language (SQL) guide divides all SQL commands into five categories:
- SQL Statements
- Functions
- Data Types
- Operators
- System Objects
Reserved Keywords, Expressions, and Identifiers are also part of the SQL
language. The following is a brief explanation of each:
Reserved Keywords
Reserved keywords are words reserved for the use of SQL Server and should
not be used for the names of objects in a database.
Expressions
Expressions are units of syntax that Microsoft SQL Server can resolve to
single values. Examples of expressions include constants, functions that
return a single value, a reference to a column, or a variable.
Identifiers
Identifiers are the names of objects such as tables, views, columns,
databases, and servers.
SQL Guide Index (Alphabetically)
Comments
Data Manipulation Language (DML)
DELETE (SQL Statement)
GO Separator
INSERT (SQL Statement)
SELECT (SQL Statement)
SQL Server Data Types
SQL Statements
System Objects
UPDATE (SQL Statement)
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