Scalar Functions in SQL

Most of the time when we refer to functions, we are thinking of the scalar type. The name of this type refers to the fact that these functions return only one value.

Based on their functionality (although not necessarily their return values), we can divide scalar functions into the following groups:

System

Date and time

String

Mathematical

Metadata

Security

Cryptographic

Text and image

Cursor

Configuration

System statistical

Aggregate

Ranking

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