SYMBOL]
[A]
[B]
[C]
[D]
[E]
[F]
[G]
[H]
[I]
[J]
[K]
[L]
[M]
[N]
[O]
[P]
[Q]
[R]
[S]
[T]
[U]
[V]
[W]
[X]
[Y]
[Z]
unattached records
deleting
via mysql
programmatic deletion
identifying
undef (Perl)
undefined values, testing for in Perl
UNIONs
column selection constraints
for selecting records in parallel from multiple tables
parentheses, for sorting select results
simulating with temporary tables
UNIQUE indexes
2nd
3rd
AUTO_INCREMENT columns and
declaring
NULL values and
NULLs and
2nd
Unix
cut utility
file line terminators
JDBC drivers, installing
loading image files to MySQL
od program
path, indicating
shell scripts, writing
Unix epoch
user-specific option files
web scripts, path to language processor, indicating
UNIX_TIMESTAMP( )
2nd
intervals, determination using
UNLOCK statement
unmarked lists, web scripting query results as
[See also lists]2nd
unordered lists, web scripting query results as
[See also lists]2nd
unsigned integers, pattern for matching
UNSIGNED typing, AUTO_INCREMENT columns
UPDATE query
rows, finding the number affected
update_related.pl
UPPER( )
2nd
url( ) (Perl)
urlencode( ) (PHP)
urllib.quote( ) (Python)
URLs (uniform resource locators)
encoding of special characters
pattern matching for
web script locations, indicating via
USE
use DBI (Perl)
user accounts (MySQL)
creating
login accounts, contrasted with
USER( )
user-defined storage module, setting for PHP sessions
users
finding out whoÕs connected
logging
UWIN (Unix for Windows)
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