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SQL Optimizer for DB2 ZOS 5.5.1 - User Guide

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Scan a multiple-index.



Use to perform a merge join.



Use to perform a nested loop join.

This join is used to join tables and is represented by a NLJOIN node and right and left subtrees. The inner table is represented by the right subtree and the outer table by the left subtree. Use either a single-index scan, a multiple-index scan, or a table space scan to access both the inner and outer tables. You can also include another join operation with the left subtree.



Separate a single data stream into multiple data streams.


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