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SQL programmingYou can use the HCL OneDB™ implementation of the SQL language to develop applications for HCL OneDB™ database servers.
Guide to SQL: SyntaxThe HCL OneDB™ Guide to SQL: Syntax describes the syntax of the statements, data types, expressions, operators, and built-in functions of the HCL OneDB™ dialect of the SQL language.
Data types and expressionsThese topics describe the data types and expressions that HCL OneDB™supports.
Expression
Aggregate Expressions
Types of Aggregate Expressions

Types of Aggregate Expressions

SQL statements can include built-in aggregates and user-defined aggregates. The built-in aggregates include all the aggregates shown in the syntax diagram in Aggregate Expressions except for the “User-Defined Aggregates” category. User-defined aggregates are any new aggregates that the user creates with the CREATE AGGREGATE statement.