Server System Variables
455
•
have_federated_engine
[455]
YES
if
mysqld
supports
FEDERATED
tables,
NO
if not. This variable was added in MySQL 5.0.3.
•
have_geometry
[455]
YES
if the server supports spatial data types,
NO
if not.
•
have_innodb
[455]
YES
if
mysqld
supports
InnoDB
tables.
DISABLED
if
--skip-innodb
[1236]
is used.
•
have_isam
[455]
In MySQL 5.0, this variable appears only for reasons of backward compatibility. It is always
NO
because
ISAM
tables are no longer supported.
•
have_merge_engine
[455]
YES
if
mysqld
supports
MERGE
tables.
DISABLED
if
--skip-merge
[420]
is used. This variable
was added in MySQL 5.0.24.
•
have_openssl
[455]
YES
if
mysqld
supports SSL connections,
NO
if not. As of MySQL 5.0.38, this variable is an alias for
have_ssl
[455]
.
•
have_profiling
[455]
YES
if statement profiling capability is present,
NO
if not. If present, the
profiling
system variable
controls whether this capability is enabled or disabled. See
Section 13.7.5.29, “
SHOW PROFILES
Syntax”
.
This variable was added in MySQL 5.0.82.
•
have_query_cache
[455]
YES
if
mysqld
supports the query cache,
NO
if not.
•
have_raid
[455]
In MySQL 5.0, this variable appears only for reasons of backward compatibility. It is always
NO
because
RAID
tables are no longer supported.
•
have_rtree_keys
[455]
YES
if
RTREE
indexes are available,
NO
if not. (These are used for spatial indexes in
MyISAM
tables.)
•
have_ssl
[455]
YES
if
mysqld
supports SSL connections,
NO
if not.
DISABLED
indicates that the server was
compiled with SSL support, but but was not started with the appropriate
--ssl-xxx
options. For
more information, see
Section 6.3.6.2, “Configuring MySQL for SSL”
.
This variable was added in MySQL 5.0.38. Before that, use
have_openssl
[455]
.
•
have_symlink
[455]
YES
if symbolic link support is enabled,
NO
if not. This is required on Unix for support of the
DATA
DIRECTORY
and
INDEX DIRECTORY
table options, and on Windows for support of data directory
symlinks. If the server is started with the
--skip-symbolic-links
[421]
option, the value is
DISABLED
.
•
hostname
[455]
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