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PRODUCT

Applies to ✅ Open Source Edition   ✅ Express Edition   ✅ Professional Edition   ✅ Enterprise Edition

The PRODUCT() aggregate function is a synthetic aggregate function that calculates the product of all values in the group, similar to how the SUM function calculates the sum (learn about other synthetic sql syntaxes).

SELECT product(ID) 
FROM BOOK
create.select(product(BOOK.ID))
      .from(BOOK)

Producing:

+---------+
| product |
+---------+
|      24 |
+---------+

Dialect support

This example using jOOQ:

product(BOOK.ID)

Translates to the following dialect specific expressions:

-- ACCESS
(SWITCH(sum(SWITCH(BOOK.ID = 0, 1)) > 0, 0, sum(SWITCH(BOOK.ID < 0, -1)) MOD 2 < 0, -1, TRUE, 1) * exp(sum(log(abs(iif(BOOK.ID = 0, NULL, BOOK.ID))))))

-- ASE, SQLDATAWAREHOUSE, SQLSERVER
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN (sum(CASE WHEN BOOK.ID < 0 THEN -1 END) % 2) < 0 THEN -1 ELSE 1 END * exp(sum(log(abs(nullif(BOOK.ID, 0))))))

-- AURORA_MYSQL, AURORA_POSTGRES, BIGQUERY, CUBRID, DB2, FIREBIRD, H2, HANA, HSQLDB, INGRES, MARIADB, MEMSQL, MYSQL, ORACLE, 
-- POSTGRES, SNOWFLAKE, SYBASE, VERTICA
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN MOD(sum(CASE WHEN BOOK.ID < 0 THEN -1 END), 2) < 0 THEN -1 ELSE 1 END * exp(sum(ln(abs(nullif(BOOK.ID, 0))))))

-- COCKROACHDB
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN MOD(sum(CASE WHEN BOOK.ID < 0 THEN -1 END), 2) < 0 THEN -1 ELSE 1 END * exp(sum(ln(CAST(abs(nullif(BOOK.ID, 0)) AS numeric)))))

-- DERBY
(CASE WHEN sum(CASE WHEN BOOK.ID = 0 THEN 1 END) > 0 THEN 0 WHEN MOD(sum(CASE WHEN BOOK.ID < 0 THEN -1 END), 2) < 0 THEN -1 ELSE 1 END * exp(sum(ln(abs(nullif(BOOK.ID, 0))))))

-- EXASOL
mul(BOOK.ID)

-- INFORMIX
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN MOD(sum(CASE WHEN BOOK.ID < 0 THEN -1 END), 2) < 0 THEN -1 ELSE 1 END * exp(sum(logn(abs(nullif(BOOK.ID, 0))))))

-- REDSHIFT
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN (sum(CASE WHEN BOOK.ID < 0 THEN -1 END) % 2) < 0 THEN -1 ELSE 1 END * exp(sum(ln(abs(nullif(BOOK.ID, 0))))))

-- TERADATA
(CASE WHEN sum(CASE BOOK.ID WHEN 0 THEN 1 END) > 0 THEN 0 WHEN sum(CASE WHEN BOOK.ID < 0 THEN -1 END) MOD 2 < 0 THEN -1 ELSE 1 END * exp(sum(ln(abs(nullif(BOOK.ID, 0))))))

-- IGNITE, SQLITE
/* UNSUPPORTED */

(These are currently generated with jOOQ 3.16, see #10141), or translate your own on our website

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