Fixups to query cache info.

@item @code{PRIVILEGES} @tab Reloads the privileges from the grant tables in

the @code{mysql} database.

@item @code{QUERY CACHE} @tab Defragment the query cache to better utilize the memory.  This command will not remove any queries from the cache.

@item @code{QUERY CACHE} @tab Defragment the query cache to better utilise its memory.  This command will not remove any queries from the cache.

@item @code{TABLES} @tab Closes all open tables and force all tables in use to be closed. This also flushes the query cache.

Don't cache results that are bigger than this. (Default 1M).

@item @code{query_cache_size}

The memory allocated to store results from old queries.  If this is zero

the query cache is disabled.

The memory allocated to store results from old queries.

If this is 0, the query cache is disabled (default).

@item @code{query_cache_startup_type}

This may have be set to 0 (cache results but don't retrieve results from

cache), 1 (cache results by defaults) or 2 (only cache @code{SELECT}'s marked

with @code{SQL_CACHE}).

This may be set (only numeric) to

0 (OFF, don't cache or retrieve results),

1 (ON, cache all results except @code{SELECT SQL_NO_CACHE ...} queries) or

2 (DEMAND, cache only @code{SELECT SQL_CACHE ...} queries).

@item @code{safe_show_databases}

Don't show databases for which the user doesn't have any database or

You can set a default value for this variable by starting @code{mysqld} with

@code{-O max_join_size=#}.

@item SQL_QUERY_CACHE_TYPE = [OFF | ON | DEMAND]

@item SQL_QUERY_CACHE_TYPE = [0   | 1  | 2]

The numbers stand for the corresponding verbose option.

@item SQL_QUERY_CACHE_TYPE = OFF | ON | DEMAND

@item SQL_QUERY_CACHE_TYPE = 0   | 1  | 2

Set query cache setting for this thread.

@multitable @columnfractions .3 .7

@item @strong{Option} @tab @strong{Description}

@item 0 or OFF @tab Cache @code{SELECT} results, but don't retrieve results from cache.

@item 1 or ON @tab Cache all @code{SELECT}'s that are not marked with @code{SQL_NO_CACHE}.

@item 2 or DEMAND @tab Cache only @code{SELECT SQL_CACHE}) queries.

@item 0 or OFF @tab Don't cache or retrieve results.

@item 1 or ON @tab Cache all results except @code{SELECT SQL_NO_CACHE ...} queries.

@item 2 or DEMAND @tab Cache only @code{SELECT SQL_CACHE ...} queries.

@end multitable

@item SQL_SAFE_UPDATES = 0 | 1

@item

@code{SQL_CACHE} tells MySQL to store the query result in the query cache

even if you are using @code{SQL_QUERY_CACHE_METHOD} 2 (= @code{DEMAND}).

if you are using @code{SQL_QUERY_CACHE_TYPE=2} (@code{DEMAND}).

@item

@code{SQL_NO_CACHE} tells MySL to not store the query result in the

query cache.

@code{SQL_NO_CACHE} tells MySQL to not allow the query result to be stored

in the query cache.

@item

@cindex @code{GROUP BY}, extensions to ANSI SQL