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name( ) (Perl)
navigation indexes
generating from database content
multipage indexes
single page indexes
negation operators in queries
negative integers, pattern for matching
nested lists, web scripting query results as
[See also lists]2nd
new( ) (Perl)
--no-auto-rehash
non-string values, pattern matching to
None (Python)
normalizing of tables
NOT IN( ) subselects
programs, simulating in
NOT LIKE operators
NOT NULL clause and PRIMARY KEYs
NOT REGEXP
NOW( )
2nd
NUL
NULL values
aggregate functions and
ALTER TABLE and
AUTO_INCREMENT columns and
COUNT( ) and
COUNT(DISTINCT), inclusion by
counting for summaries
embedded queries, handling in
file transfers, validating format for
Java, representation
mapping to higher values than non-NULLs
mapping to other values for display
mapping to zero
Perl, representing in
PHP, representing in
Python, representation in
queries and
inclusion in
representing in datafiles
sorting operations and
SQL pattern matching and
summaries and
UNIQUE indexes and
numeric values, pattern matching of
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