释义 |
aggregate function
aggregate function[¦ag·rə·gət ′fəŋk·shən] (computer science) A command in a database management program that performs an arithmetic operation on the values in a specified column or field in all the records in the database, such as computing their sum or average or counting the number of records that satisfy particular criteria. aggregate functionA calculation that is made on several records or cells of data. SUM, AVG, MAX, MIN and COUNT are examples of aggregate functions that are used in spreadsheets and database programs. |