T-SQL System Functions
This section provides a comprehensive reference for system functions available in Transact-SQL (T-SQL) for SQL Server. These functions perform specific tasks, such as returning information about the current database, user, or server, or manipulating data in various ways.
Aggregate Functions
Aggregate functions perform a calculation on a set of values and return a single scalar value.
Date and Time Functions
These functions return or manipulate date and time values.
String Functions
String functions are used to manipulate character strings.
Mathematical Functions
Mathematical functions perform arithmetic operations.
System Information Functions
These functions return information about the SQL Server environment.