[MDEV-16392] Better document how comparison operators work on ROW objects Created: 2018-06-04  Updated: 2018-12-10  Resolved: 2018-12-10

Status: Closed
Project: MariaDB Server
Component/s: Documentation - Support
Fix Version/s: N/A

Type: Task Priority: Major
Reporter: Geoff Montee (Inactive) Assignee: Kenneth Dyer (Inactive)
Resolution: Fixed Votes: 0
Labels: None

Issue Links:
Blocks
blocks MDEV-16393 Better document how RANGE COLUMNS works Open

 Description   

The MySQL documentation explains how the comparison operators work on ROW objects. For example:

For row comparisons, (a, b) < (x, y) is equivalent to:
 
(a < x) OR ((a = x) AND (b < y))

https://dev.mysql.com/doc/refman/5.7/en/comparison-operators.html#operator_less-than

The relevant MariaDB documentation pages do not include this information. For example:

https://mariadb.com/kb/en/library/less-than/

MDEV-16393 has a concrete example.


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