Index_Q

Q

Qcache_free_blocks variable, 390

Qcache_free_memory variable, 390

Qcache_hits variable, 390

Qcache_inserts variable, 389

Qcache_not_cached variable, 390

Qcache_queries_in_cache variable, 389

Qcache_total_blocks variable, 390

QUARTER() function, 520

queries. See also information retrieval; SELECT statement

normalization and performance, 236

PHP function to return information about, 586

PHP function to return results, 590–591

programming, 179–181

unbuffered, PHP function to return results, 593

query log, 272, 273

query optimizer, 169–170

query_buffer_size variable, 386

query_cache_limit variable, 386

query_cache_size variable, 386

query_cache_startup_type variable, 386

QUERY_CACHE_TYPE variable, 392, 496

Questions variable, 390

QUIT command, 7

QUOTE() function, 538

quote method (Perl DBI), 602

quote_identifier method (Perl DBI), 602

quotes ('), for string field, 12