SQL Functions . SQL functions are built into Oracle Database and are available for use in various appropriate SQL statements. Do not confuse SQL functions with user-defined functions written in PL/SQL.

How to use sql group by clause. How to group data using sql group by clause. A tutorial on SQL programming. Your Guide in learning SQL.

## How to use sql group functions, How to work with sql group functions – DISTINCT, MIN, MAX, AVG, COUNT, SUM.

An aggregate function performs a calculation on a set of values, and returns a single value. Except for COUNT, aggregate functions ignore null values. Aggregate functions are often used with the GROUP BY clause of the SELECT statement. All aggregate functions are deterministic. In other words

SQL Server aggregate functions perform a calculation on a set of values and return a single value. With the exception of the COUNT aggregate function, all other aggregate functions ignore NULL values.

## The SQL GROUP BY statement is used together with the SQL aggregate functions to group the retrieved data by one or more columns. The GROUP BY concept is one of the most complicated concepts for people new to the SQL language and the easiest way to understand it, is by example.

SQL Numeric Functions – Learn SQL (Structured Programming Language) in simple and easy steps starting from basic to advanced concepts with examples including database concepts, Overview, RDBMS Concepts, Databases, SQL Syntax, Data Types, Operators, Expressions, CREATE, DROP or DELETE, SELECT Database, USE Statement, …

Learn about the categories of built-in functions you can use with SQL databases. You can use the built-in functions or create your own user-defined functions. Aggregate functions perform a calculation on a set of values and return a single value. They are allowed in the select list or the HAVING

The SQL GROUP BY clause is used along with the SQL aggregate functions and specifies the groups where selected rows are placed. WHEN one or more aggregate functions are presented in the SQL SELECT column list, the SQL GROUP BY clause calculates a summary value for each group.

Is it possible to concatenate strings with one or more of other group by function like sum, avg, count etc . Say I have the following table Id Name Order Value 1 a 1 100 2 b 2