Aggregate function

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In database management an aggregate function is a function where the values of multiple rows are grouped together to form a single value of more significant meaning or measurement such as a set, a bag or a list.

Common aggregate functions include :

The listagg function, as defined in the SQL:2016 standard,[1] aggregates data from multiple rows into a single concatenated string.

Aggregate functions occur commonly in numerous programming languages, in spreadsheets, and in relational algebra.

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References[edit]

https://msdn.microsoft.com/en-IN/library/ms173454.aspx

  1. ^ Winand, Markus (2017-05-15). "Big News in Databases: New SQL Standard, Cloud Wars, and ACIDRain (Spring 2017)". DZone. Retrieved 2017-06-10. In December 2016, ISO released a new version of the SQL standard. It introduces new features such as row pattern matching, listagg, date and time formatting, and JSON support. 

Further reading[edit]