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SQL Functions

SQL Aggregate Functions

Aggregate SQL functions summarize the results of an expression for the group of rows in database table and returns a single value for that group.

SQL Mathematical Functions

SQL mathematical functions are very important to all programming languages and also to SQL. Here we cover all common SQL mathematical functions such as ABS, POWER, SQRT, RANDOM...with clear explanations and source code examples

SQL String Functions

SQL string functions allow you to manipulate character data effectively.