ekuiper-new/docs/en_US/sqls/functions/overview.md

Functions

eKuiper has many built-in functions for performing calculations on data.

• Aggregate Functions
• Math Functions
• String Functions
• Array Functions
• Object Functions
• Hashing Functions
• Transform Functions
• JSON Functions

• Other Functions

• Analytic Functions

• Multi-Row Functions

• Multi-Column Functions

eKuiper also provides a set of functions though shipped plugins. Users need to install the plugins before using them.

• Custom Functions