December 2014
Intermediate to advanced
852 pages
17h 57m
English
Content preview from Joe Celko's SQL for Smarties, 5th Edition
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Chapter 19
BETWEEN and OVERLAPS Predicates
Abstract
The BETWEEN and OVERLAPS predicates both offer a shorthand way of showing that one value lies within a range defined by two other values. BETWEEN works with scalar range limits of any type; the OVERLAPS predicate looks at two time periods.
Keywords
BETWEEN
OVERLAPS
SYMMETRIC
ASYMMETRIC
NULLs
INTERVAL
The between and OVERLAPS predicates both offer a shorthand way of showing that one value lies within a range defined by two other values. BETWEEN works with scalar range limits of any type; the OVERLAPS predicate looks at two time periods (defined either by start and end points or by a starting time and an INTERVAL) to see if they overlap in time.
19.1 The BETWEEN Predicate
The BETWEEN predicate ...
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