Relational Join Algorithms

Category: Python - Education

This script implements the three standard relational join algorithms: nested loops join, hash join, and merge join, using the iterator algebra support in Python.This script also presents code that can be used for inner join, left outer join, full outer join, and semijoins. The nested loops join supports a theta join. & nested lemijoins are useful, especially in conjunction with hierarchical queries. In SQL, if supported, they are the efficient alternative to writing 'select distinct', although they make one's code difficult to understand by the unversed. Hopefully showing this with procedural code can make this useful feature less mysterious. Date: 07 January, 2012


Relational Join Algorithms - Nested Loops Join - Hash Join - Relational - Join - Algorithms

Homepage: http://code.activestate.com/

Developer: code.activestate.com

License: Freeware

Operating System: All

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