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Joe Celko's SQL for Smarties, 5th Edition by Joe Celko

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Chapter 34

Relational Division

Abstract

Relational division is one of the eight basic operations in Codd's relational algebra. The idea is that a divisor table is used to partition a dividend table and produce a quotient or results table. The quotient table is made up of those values of one column for which a second column had all of the values in the divisor.

Keywords

Codd's relational algebra

dividend

divisor

quotient

remainder

Codd's Division

Todd's Division

Romley's Division

Relational division is one of the eight basic operations in Codd’s relational algebra. The idea is that a divisor table is used to partition a dividend table and produce a quotient or results table. The quotient table is made up of those values of one column for ...

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