CMake 3.2.3, Copyright 2000-2015 Kitware, Inc.
Found GNU toolchain
C compiler on this system is: gcc
C++ compiler on this system is: g++
Makefile processor on this system is: gmake
g++ is GNU compiler
g++ has setenv
g++ has unsetenv
g++ does not have environ in stdlib.h
g++ has STL in std:: namespace
g++ has ANSI streams
g++ has streams in std:: namespace
g++ has sstream
g++ has operator!=(string, char*)
g++ has stl iterator_traits
g++ has standard template allocator
g++ has allocator<>::rebind<>
g++ does not have non-standard allocator<>::max_size argument
g++ has stl containers supporting allocator objects
g++ has stl wstring
g++ has header cstddef
g++ requires template friends to use <>
g++ supports member templates
g++ has standard template specialization syntax
g++ has argument dependent lookup
.......
[root@rh55 cmake-3.2.3]# make
Scanning dependencies of target cmIML_test
[ 0%] Building C object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test.c.o
[ 0%] Building C object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_ABI_C.c.o
[ 0%] Building C object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_INT_C.c.o
[ 0%] Building C object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_include_C.c.o
[ 1%] Building CXX object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_ABI_CXX.cxx.o
[ 1%] Building CXX object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_INT_CXX.cxx.o
[ 1%] Building CXX object Utilities/KWIML/test/CMakeFiles/cmIML_test.dir/test_include_CXX.cxx.o
Linking CXX executable cmIML_test
[ 1%] Built target cmIML_test
Scanning dependencies of target cmsys
[ 1%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/ProcessUNIX.c.o
[ 1%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/Base64.c.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/EncodingC.c.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/MD5.c.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/Terminal.c.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/System.c.o
[ 2%] Building C object Source/kwsys/CMakeFiles/cmsys.dir/String.c.o
[ 2%] Building CXX object Source/kwsys/CMakeFiles/cmsys.dir/Directory.cxx.o
[ 3%] Building CXX object Source/kwsys/CMakeFiles/cmsys.dir/DynamicLoader.cxx.o
[ 3%] Building CXX object Source/kwsys/CMakeFiles/cmsys.dir/EncodingCXX.cxx.o
[ 3%] Building CXX object Source/kwsys/CMakeFiles/cmsys.dir/Glob.cxx.o
......
[100%] Built target foo
[root@rh55 cmake-3.2.3]# make install
[ 1%] Built target cmIML_test
[ 4%] Built target cmsys
[ 4%] Built target cmsysTestDynload
[ 5%] Built target cmsys_c
[ 5%] Built target cmsysTestProcess
[ 5%] Built target cmsysTestSharedForward
[ 6%] Built target cmsysTestsC
[ 8%] Built target cmsysTestsCxx
[ 10%] Built target cmzlib
[ 28%] Built target cmcurl
[ 28%] Built target LIBCURL
[ 29%] Built target cmcompress
[ 30%] Built target cmbzip2
[ 41%] Built target cmliblzma
[ 58%] Built target cmlibarchive
[ 59%] Built target cmexpat
[ 59%] Built target cmjsoncpp
[ 66%] Built target cmForm
[ 84%] Built target CMakeLib
[ 87%] Built target CPackLib
[ 95%] Built target CTestLib
......
Installing: /usr/local/cmake/bin/cmake
-- Installing: /usr/local/cmake/bin/ctest
-- Installing: /usr/local/cmake/bin/cpack
-- Installing: /usr/local/cmake/share/cmake-3.2/include/cmCPluginAPI.h
-- Installing: /usr/local/cmake/share/cmake-3.2/editors/vim/cmake-help.vim
-- Installing: /usr/local/cmake/share/cmake-3.2/editors/vim/cmake-indent.vim
-- Installing: /usr/local/cmake/share/cmake-3.2/editors/vim/cmake-syntax.vim
-- Installing: /usr/local/cmake/share/cmake-3.2/editors/emacs/cmake-mode.el
-- Installing: /usr/local/cmake/share/aclocal/cmake.m4
-- Installing: /usr/local/cmake/share/cmake-3.2/completions/cmake
-- Installing: /usr/local/cmake/share/cmake-3.2/completions/cpack
-- Installing: /usr/local/cmake/share/cmake-3.2/completions/ctest
安装完成校验：
[root@rh55 ~]# cd /usr/local/cmake
[root@rh55 cmake]# ls -l
total 12
drwxr-xr-x 2 root root 4096 Jun 9 17:47 bin
drwxr-xr-x 3 root root 4096 Jun 9 17:47 doc
drwxr-xr-x 4 root root 4096 Jun 9 17:47 share
[root@rh55 cmake]# cd bin
[root@rh55 bin]# ls -l
total 41812
-rwxr-xr-x 1 root root 10054392 Jun 9 17:46 ccmake
-rwxr-xr-x 1 root root 9969999 Jun 9 17:46 cmake
-rwxr-xr-x 1 root root 10764389 Jun 9 17:46 cpack
-rwxr-xr-x 1 root root 11948376 Jun 9 17:46 ctest 建立可执行文件查找路径：
[root@rh55 bin]# cat /etc/profile
export PATH=$PATH:/usr/local/cmake/bin cmake安装成功后，安装mysql源码包： 3、源码安装mysql
[root@rh55 Packages]# cd /home/oracle/mysql-5.6.4-m7
[root@rh55 mysql-5.6.4-m7]# ls
BUILD config.h.cmake extra libservices README storage vio
BUILD-CMAKE configure.cmake include man regex strings win
client COPYING INSTALL-SOURCE mysql-test scripts support-files zlib
cmake dbug INSTALL-WIN-SOURCE mysys sql tests
CMakeLists.txt Docs libmysql packaging sql-bench unittest
cmd-line-utils Doxyfile-perfschema libmysqld plugin sql-common VERSION 查看编译环境：
[root@rh55 mysql-5.6.4-m7]# cmake ./
-- Check size of wchar_t - done
-- Check size of wctype_t
-- Check size of wctype_t - done
-- Check size of wint_t
-- Check size of wint_t - done
-- Found Curses: /usr/lib64/libcurses.so
-- Looking for tputs in /usr/lib64/libcurses.so
-- Looking for tputs in /usr/lib64/libcurses.so - found
-- Performing Test HAVE_DECL_TGOTO
-- Performing Test HAVE_DECL_TGOTO - Success
-- Looking for strvis
-- Looking for strvis - not found
-- Looking for strunvis
-- Looking for strunvis - not found
-- Looking for include files HAVE_LIBAIO_H
-- Looking for include files HAVE_LIBAIO_H - found
-- Looking for io_queue_init in aio
-- Looking for io_queue_init in aio - found
-- Performing Test HAVE_IB_GCC_ATOMIC_BUILTINS
-- Performing Test HAVE_IB_GCC_ATOMIC_BUILTINS - Success
-- Performing Test HAVE_IB_ATOMIC_PTHREAD_T_GCC
-- Performing Test HAVE_IB_ATOMIC_PTHREAD_T_GCC - Success
-- Check size of pthread_t
-- Check size of pthread_t - done
-- Performing Test HAVE_PEERCRED
-- Performing Test HAVE_PEERCRED - Success
-- Googletest was not found. gtest-based unit tests will be disabled. You can run cmake . -DENABLE_DOWNLOADS=1 to automatically download and build required components from source.
-- If you are inside a firewall, you may need to use an http proxy: export http_proxy=http://foo.bar.com:80
-- Configuring done
-- Generating done
-- Build files have been written to: /home/oracle/mysql-5.6.4-m7编译：
[root@rh55 mysql-5.6.4-m7]# make
Scanning dependencies of target INFO_BIN
[ 0%] Built target INFO_BIN
Scanning dependencies of target INFO_SRC
[ 0%] Built target INFO_SRC
Scanning dependencies of target abi_check
[ 0%] Built target abi_check
[ 1%] Generating common.h
[ 1%] Generating help.c
[ 1%] Generating help.h
[ 1%] Generating vi.h
[ 1%] Generating emacs.h
[ 1%] Generating fcns.c
[ 1%] Generating fcns.h
Scanning dependencies of target edit
[ 1%] Building C object cmd-line-utils/libedit/CMakeFiles/edit.dir/chared.c.o
[ 1%] Building C object cmd-line-utils/libedit/CMakeFiles/edit.dir/chartype.c.o
[ 1%] Building C object cmd-line-utils/libedit/CMakeFiles/edit.dir/el.c.o安装：
[root@rh55 mysql-5.6.4-m7]# make install
[ 0%] Built target INFO_BIN
[ 0%] Built target INFO_SRC
[ 0%] Built target abi_check
[ 5%] Built target edit
[ 6%] Built target mysqlservices
[ 12%] Built target strings
[ 25%] Built target mysys
[ 25%] Built target dbug
[ 25%] Built target comp_err
[ 25%] Built target GenError
[ 25%] Built target blackhole
[ 25%] Built target example
[ 25%] Built target archive
[ 34%] Built target perfschema
[ 35%] Built target mytap
[ 35%] Built target pfs-t
[ 35%] Built target pfs_account-oom-t
[ 35%] Built target pfs_host-oom-t
[ 36%] Built target pfs_instr-oom-t
[ 36%] Built target pfs_instr-t
[ 36%] Built target pfs_instr_class-oom-t
[ 36%] Built target pfs_instr_class-t
[ 36%] Built target pfs_user-oom-t4、数据库初始化
[root@rh55 mysql-5.6.4-m7]# cd /usr/local/mysql
[root@rh55 mysql]# ls
bin data include lib mysql-test scripts sql-bench
COPYING docs INSTALL-BINARY man README share support-files
[root@rh55 mysql]# ls -l
total 76
drwxr-xr-x 2 root root 4096 Jan 28 17:16 bin
-rw-r--r-- 1 root root 17987 Dec 14 2011 COPYING
drwxr-xr-x 4 root root 4096 Jan 28 17:16 data
drwxr-xr-x 2 root root 4096 Jan 28 17:16 docs
drwxr-xr-x 3 root root 4096 Jan 28 17:16 include
-rw-r--r-- 1 root root 7369 Dec 14 2011 INSTALL-BINARY
drwxr-xr-x 3 root root 4096 Jan 28 17:16 lib
drwxr-xr-x 4 root root 4096 Jan 28 17:16 man
drwxr-xr-x 10 root root 4096 Jan 28 17:16 mysql-test
-rw-r--r-- 1 root root 2552 Dec 14 2011 README
drwxr-xr-x 2 root root 4096 Jan 28 17:16 scripts
drwxr-xr-x 27 root root 4096 Jan 28 17:16 share
drwxr-xr-x 4 root root 4096 Jan 28 17:16 sql-bench
drwxr-xr-x 2 root root 4096 Jan 28 17:16 support-files
[root@rh55 mysql]# id mysql
uid=27(mysql) gid=27(mysql) groups=27(mysql)
[root@rh55 mysql]# chown -R mysql:mysql .
[root@rh55 mysql]# ls -l
total 76
drwxr-xr-x 2 mysql mysql 4096 Jan 28 17:16 bin
-rw-r--r-- 1 mysql mysql 17987 Dec 14 2011 COPYING
drwxr-xr-x 4 mysql mysql 4096 Jan 28 17:16 data
drwxr-xr-x 2 mysql mysql 4096 Jan 28 17:16 docs
drwxr-xr-x 3 mysql mysql 4096 Jan 28 17:16 include
-rw-r--r-- 1 mysql mysql 7369 Dec 14 2011 INSTALL-BINARY
drwxr-xr-x 3 mysql mysql 4096 Jan 28 17:16 lib
drwxr-xr-x 4 mysql mysql 4096 Jan 28 17:16 man
drwxr-xr-x 10 mysql mysql 4096 Jan 28 17:16 mysql-test
-rw-r--r-- 1 mysql mysql 2552 Dec 14 2011 README
drwxr-xr-x 2 mysql mysql 4096 Jan 28 17:16 scripts
drwxr-xr-x 27 mysql mysql 4096 Jan 28 17:16 share
drwxr-xr-x 4 mysql mysql 4096 Jan 28 17:16 sql-bench
drwxr-xr-x 2 mysql mysql 4096 Jan 28 17:16 support-files
[root@rh55 mysql]# scripts/mysql_install_db --user=mysql
Installing MySQL system tables...
150128 17:21:30 InnoDB: The InnoDB memory heap is disabled
150128 17:21:30 InnoDB: Mutexes and rw_locks use GCC atomic builtins
150128 17:21:30 InnoDB: Compressed tables use zlib 1.2.3
150128 17:21:30 InnoDB: Using Linux native AIO
150128 17:21:30 InnoDB: CPU does not support crc32 instructions
150128 17:21:30 InnoDB: Initializing buffer pool, size = 128.0M
150128 17:21:30 InnoDB: Completed initialization of buffer pool
InnoDB: The first specified data file ./ibdata1 did not exist:
InnoDB: a new database to be created!
150128 17:21:30 InnoDB: Setting file ./ibdata1 size to 10 MB
InnoDB: Database physically writes the file full: wait...
150128 17:21:31 InnoDB: Log file ./ib_logfile0 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile0 size to 5 MB
InnoDB: Database physically writes the file full: wait...
150128 17:21:31 InnoDB: Log file ./ib_logfile1 did not exist: new to be created
InnoDB: Setting log file ./ib_logfile1 size to 5 MB
InnoDB: Database physically writes the file full: wait...
InnoDB: Doublewrite buffer not found: creating new
InnoDB: Doublewrite buffer created
150128 17:21:31 InnoDB: 128 rollback segment(s) are active.
InnoDB: Creating foreign key constraint system tables
InnoDB: Foreign key constraint system tables created
150128 17:21:31 InnoDB: Waiting for the background threads to start
......
150128 17:21:38 [Note] Shutting down plugin 'mysql_native_password'
150128 17:21:38 [Note] Shutting down plugin 'binlog'
OK
To start mysqld at boot time you have to copy
support-files/mysql.server to the right place for your system
PLEASE REMEMBER TO SET A PASSWORD FOR THE MySQL root USER !
To do so, start the server, then issue the following commands:
./bin/mysqladmin -u root password 'new-password'
./bin/mysqladmin -u root -h rh6 password 'new-password'
Alternatively you can run:
./bin/mysql_secure_installation
which will also give you the option of removing the test
databases and anonymous user created by default. This is
strongly recommended for production servers.
See the manual for more instructions.
You can start the MySQL daemon with:
cd . ; ./bin/mysqld_safe &
You can test the MySQL daemon with mysql-test-run.pl
cd ./mysql-test ; perl mysql-test-run.pl
Please report any problems with the ./bin/mysqlbug script!
[root@rh55 mysql]# chown -R mysql:mysql ./data
[root@rh55 mysql]# chmod -R ug+rws .
[root@rh55 mysql]# ls -l
total 76
drwsrwsr-x 2 mysql mysql 4096 Jan 28 17:16 bin
-rwSrwSr-- 1 mysql mysql 17987 Dec 14 2011 COPYING
drwsrwsr-x 4 mysql mysql 4096 Jan 28 17:16 data
drwsrwsr-x 2 mysql mysql 4096 Jan 28 17:16 docs
drwsrwsr-x 3 mysql mysql 4096 Jan 28 17:16 include
-rwSrwSr-- 1 mysql mysql 7369 Dec 14 2011 INSTALL-BINARY
drwsrwsr-x 3 mysql mysql 4096 Jan 28 17:16 lib
drwsrwsr-x 4 mysql mysql 4096 Jan 28 17:16 man
drwsrwsr-x 10 mysql mysql 4096 Jan 28 17:16 mysql-test
-rwSrwSr-- 1 mysql mysql 2552 Dec 14 2011 README
drwsrwsr-x 2 mysql mysql 4096 Jan 28 17:16 scripts
drwsrwsr-x 27 mysql mysql 4096 Jan 28 17:16 share
drwsrwsr-x 4 mysql mysql 4096 Jan 28 17:16 sql-bench
drwsrwsr-x 2 mysql mysql 4096 Jan 28 17:16 support-files 5、查看mysql配置文件
[root@rh55 mysql]# cat /etc/my.cnf
[mysqld]
datadir=/var/lib/mysql
socket=/var/lib/mysql/mysql.sock
user=mysql
# Disabling symbolic-links is recommended to prevent assorted security risks
symbolic-links=0
[mysqld_safe]
log-error=/var/log/mysqld.log
pid-file=/var/run/mysqld/mysqld.pid6、启动mysqld服务
[root@rh55 mysql]# bin/mysqld_safe --user=mysql &
[1] 13138
[root@rh55 mysql]# 150128 17:25:19 mysqld_safe Logging to '/var/log/mysqld.log'.
150128 17:25:19 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
[root@rh55 mysql]# ps -ef |grep mysql
root 13138 2175 1 17:25 pts/0 00:00:00 /bin/sh bin/mysqld_safe --user=mysql
mysql 13276 13138 3 17:25 pts/0 00:00:00 /usr/local/mysql/bin/mysqld --basedir=/usr/local/mysql --datadir=/var/lib/mysql --plugin-dir=/usr/local/mysql/lib/plugin --user=mysql --log-error=/var/log/mysqld.log --pid-file=/var/run/mysqld/mysqld.pid --socket=/var/lib/mysql/mysql.sock
[root@rh55 mysql]# netstat -an |grep :3306
tcp 0 0 0.0.0.0:3306 0.0.0.0:* LISTEN
查看系统日志：
[root@rh6 log]# more /var/log/mysqld.log
150128 17:25:19 mysqld_safe Starting mysqld daemon with databases from /var/lib/mysql
150128 17:25:19 InnoDB: The InnoDB memory heap is disabled
150128 17:25:19 InnoDB: Mutexes and rw_locks use GCC atomic builtins
150128 17:25:19 InnoDB: Compressed tables use zlib 1.2.3
150128 17:25:19 InnoDB: Using Linux native AIO
150128 17:25:19 InnoDB: CPU does not support crc32 instructions
150128 17:25:19 InnoDB: Initializing buffer pool, size = 128.0M
150128 17:25:19 InnoDB: Completed initialization of buffer pool
150128 17:25:19 InnoDB: highest supported file format is Barracuda.
150128 17:25:20 InnoDB: 128 rollback segment(s) are active.
150128 17:25:20 InnoDB: Waiting for the background threads to start
150128 17:25:21 InnoDB: 1.2.4 started; log sequence number 1602851
150128 17:25:21 [Warning] No existing UUID has been found, so we assume that this is the first time that this serv
er has been started. Generating a new UUID: 94adecc3-a6cf-11e4-87f0-080027ac3540.
150128 17:25:21 [Note] Event Scheduler: Loaded 0 events
150128 17:25:21 [Note] /usr/local/mysql/bin/mysqld: ready for connections.
Version: '5.6.4-m7' socket: '/var/lib/mysql/mysql.sock' port: 3306 Source distribution
[root@rh6 log]# 7、修改root（mysql）用户口令
[root@rh55 mysql]# mysqladmin version
mysqladmin Ver 8.42 Distrib 5.1.66, for redhat-linux-gnu on x86_64
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Server version 5.6.4-m7
Protocol version 10
Connection Localhost via UNIX socket
UNIX socket /var/lib/mysql/mysql.sock
Uptime: 11 min 16 sec
Threads: 1 Questions: 1 Slow queries: 0 Opens: 66 Flush tables: 1 Open tables: 59 Queries per second avg: 0.001
[root@rh55 mysql]# mysqladmin -u root -p password "oracle"
Enter password:
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'
[root@rh6 mysql]# mysqladmin -u root -p password "oracle"
Enter password:
mysqladmin: connect to server at 'localhost' failed
error: 'Access denied for user 'root'@'localhost' (using password: YES)'
[root@rh55 mysql]# mysqladmin -u root -p password "oracle"
Enter password:8、连接mysql server
[root@rh55 mysql]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 12
Server version: 5.6.4-m7 Source distribution
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>
mysql> show databases;
+--------------------+
| Database |
+--------------------+
| information_schema |
| mysql |
| performance_schema |
| test |
+--------------------+
4 rows in set (0.01 sec)
mysql> use test;
Database changed
mysql> show tables;
Empty set (0.00 sec)
mysql> use mysql;
Reading table information for completion of table and column names
You can turn off this feature to get a quicker startup with -A
Database changed
mysql> show tables;
+---------------------------+
| Tables_in_mysql |
+---------------------------+
| columns_priv |
| db |
| event |
| func |
| general_log |
| help_category |
| help_keyword |
| help_relation |
| help_topic |
| host |
| innodb_index_stats |
| innodb_table_stats |
| ndb_binlog_index |
| plugin |
| proc |
| procs_priv |
| proxies_priv |
| servers |
| slave_master_info |
| slave_relay_log_info |
| slave_worker_info |
| slow_log |
| tables_priv |
| time_zone |
| time_zone_leap_second |
| time_zone_name |
| time_zone_transition |
| time_zone_transition_type |
| user |
+---------------------------+
29 rows in set (0.00 sec)
mysql> 9 查看mysql引擎
mysql> show engines;
+--------------------+---------+------------------------------------------------------------+--------------+------+------------+
| Engine | Support | Comment | Transactions | XA | Savepoints |
+--------------------+---------+------------------------------------------------------------+--------------+------+------------+
| MyISAM | YES | MyISAM storage engine | NO | NO | NO |
| InnoDB | DEFAULT | Supports transactions, row-level locking, and foreign keys | YES | YES | YES |
| MRG_MYISAM | YES | Collection of identical MyISAM tables | NO | NO | NO |
| PERFORMANCE_SCHEMA | YES | Performance Schema | NO | NO | NO |
| CSV | YES | CSV storage engine | NO | NO | NO |
| MEMORY | YES | Hash based, stored in memory, useful for temporary tables | NO | NO | NO |
+--------------------+---------+------------------------------------------------------------+--------------+------+------------+
6 rows in set (0.01 sec)
[root@rh6 bin]# mysql -u root -p
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 1
Server version: 5.6.4-m7 Source distribution
Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql> show engines \G
*************************** 1. row ***************************
Engine: MyISAM
Support: YES
Comment: MyISAM storage engine
Transactions: NO
XA: NO
Savepoints: NO
*************************** 2. row ***************************
Engine: InnoDB
Support: DEFAULT
Comment: Supports transactions, row-level locking, and foreign keys
Transactions: YES
XA: YES
Savepoints: YES
*************************** 3. row ***************************
Engine: MRG_MYISAM
Support: YES
Comment: Collection of identical MyISAM tables
Transactions: NO
XA: NO
Savepoints: NO
*************************** 4. row ***************************
Engine: PERFORMANCE_SCHEMA
Support: YES
Comment: Performance Schema
Transactions: NO
XA: NO
Savepoints: NO
*************************** 5. row ***************************
Engine: CSV
Support: YES
Comment: CSV storage engine
Transactions: NO
XA: NO
Savepoints: NO
*************************** 6. row ***************************
Engine: MEMORY
Support: YES
Comment: Hash based, stored in memory, useful for temporary tables
Transactions: NO
XA: NO
Savepoints: NO
6 rows in set (0.01 sec)默认引擎是：InnoDB
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