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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, DB2, FIREBIRD, H2, HANA, HSQLDB, MARIADB, MEMSQL, MYSQL, ORACLE, POSTGRES,
-- SNOWFLAKE, SYBASE, VERTICA, YUGABYTEDB
(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
))))))
-- SQLITE
/* UNSUPPORTED */
(These are currently generated with jOOQ 3.18, see #10141), or translate your own on our website
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