一、MySQL 连接本地数据库，用户名为“root”，密码“123”（注意：“-p”和“123” 之间不能有空格）

C:\>mysql -h localhost -u root -p123

二、MySQL 连接远程数据库（192.168.0.201），端口“3306”，用户名为“root”，密码“123”

C:\>mysql -h 172.16.16.45 -P 3306 -u root -p123

三、MySQL 连接本地数据库，用户名为“root”，隐藏密码

C:\>mysql -h localhost -u root -p
Enter password:

四、MySQL 连接本地数据库，用户名为“root”，指定所连接的数据库为“test”

C:\>mysql -h localhost -u root -p123 -D test
mysql>select database();
+------------+
| database() |
+------------+
| test       |
+------------+

下面是 MySQL 客户端命令的详细参数：

mysql  Ver 14.12 Distrib 5.0.41, for Win32 (ia32)
Copyright (C) 2002 MySQL AB
This software comes with ABSOLUTELY NO WARRANTY. This is free software,
and you are welcome to modify and redistribute it under the GPL license

Usage: mysql [OPTIONS] [database]
-?, --help          Display this help and exit.
-I, --help          Synonym for -?
--auto-rehash       Enable automatic rehashing. One doesn't need to use
'rehash' to get table and field completion, but startup
and reconnecting may take a longer time. Disable with
--disable-auto-rehash.
-A, --no-auto-rehash
No automatic rehashing. One has to use 'rehash' to get
table and field completion. This gives a quicker start of
mysql and disables rehashing on reconnect. WARNING:
options deprecated; use --disable-auto-rehash instead.
-B, --batch         Don't use history file. Disable interactive behavior.
(Enables --silent)
--character-sets-dir=name
Directory where character sets are.
--default-character-set=name
Set the default character set.
-C, --compress      Use compression in server/client protocol.
-#, --debug[=#]     This is a non-debug version. Catch this and exit
-D, --database=name Database to use.
--delimiter=name    Delimiter to be used.
-e, --execute=name  Execute command and quit. (Disables --force and history
file)
-E, --vertical      Print the output of a query (rows) vertically.
-f, --force         Continue even if we get an sql error.
-G, --named-commands
Enable named commands. Named commands mean this program's
internal commands; see mysql> help . When enabled, the
named commands can be used from any line of the query,
otherwise only from the first line, before an enter.
Disable with --disable-named-commands. This option is
disabled by default.
-g, --no-named-commands
Named commands are disabled. Use \* form only, or use
named commands only in the beginning of a line ending
with a semicolon (;) Since version 10.9 the client now
starts with this option ENABLED by default! Disable with
'-G'. Long format commands still work from the first
line. WARNING: option deprecated; use
--disable-named-commands instead.
-i, --ignore-spaces Ignore space after function names.
--local-infile      Enable/disable LOAD DATA LOCAL INFILE.
-b, --no-beep       Turn off beep on error.
-h, --host=name     Connect to host.
-H, --html          Produce HTML output.
-X, --xml           Produce XML output
--line-numbers      Write line numbers for errors.
-L, --skip-line-numbers
Don't write line number for errors. WARNING: -L is
deprecated, use long version of this option instead.
-n, --unbuffered    Flush buffer after each query.
--column-names      Write column names in results.
-N, --skip-column-names
Don't write column names in results. WARNING: -N is
deprecated, use long version of this options instead.
-O, --set-variable=name
Change the value of a variable. Please note that this
option is deprecated; you can set variables directly with
--variable-name=value.
--sigint-ignore     Ignore SIGINT (CTRL-C)
-o, --one-database  Only update the default database. This is useful for
skipping updates to other database in the update log.
-p, --password[=name]
Password to use when connecting to server. If password is
not given it's asked from the tty.
-W, --pipe          Use named pipes to connect to server.
-P, --port=#        Port number to use for connection.
--prompt=name       Set the mysql prompt to this value.
--protocol=name     The protocol of connection (tcp,socket,pipe,memory).
-q, --quick         Don't cache result, print it row by row. This may slow
down the server if the output is suspended. Doesn't use
history file.
-r, --raw           Write fields without conversion. Used with --batch.
--reconnect         Reconnect if the connection is lost. Disable with
--disable-reconnect. This option is enabled by default.
-s, --silent        Be more silent. Print results with a tab as separator,
each row on new line.
--shared-memory-base-name=name
Base name of shared memory.
-S, --socket=name   Socket file to use for connection.
--ssl               Enable SSL for connection (automatically enabled with
other flags). Disable with --skip-ssl.
--ssl-ca=name       CA file in PEM format (check OpenSSL docs, implies
--ssl).
--ssl-capath=name   CA directory (check OpenSSL docs, implies --ssl).
--ssl-cert=name     X509 cert in PEM format (implies --ssl).
--ssl-cipher=name   SSL cipher to use (implies --ssl).
--ssl-key=name      X509 key in PEM format (implies --ssl).
--ssl-verify-server-cert
Verify server's "Common Name" in its cert against
hostname used when connecting. This option is disabled by
default.
-t, --table         Output in table format.
-T, --debug-info    Print some debug info at exit.
--tee=name          Append everything into outfile. See interactive help (\h)
also. Does not work in batch mode. Disable with
--disable-tee. This option is disabled by default.
--no-tee            Disable outfile. See interactive help (\h) also. WARNING:
option deprecated; use --disable-tee instead
-u, --user=name     User for login if not current user.
-U, --safe-updates  Only allow UPDATE and DELETE that uses keys.
-U, --i-am-a-dummy  Synonym for option --safe-updates, -U.
-v, --verbose       Write more. (-v -v -v gives the table output format).
-V, --version       Output version information and exit.
-w, --wait          Wait and retry if connection is down.
--connect_timeout=# Number of seconds before connection timeout.
--max_allowed_packet=#
Max packet length to send to, or receive from server
--net_buffer_length=#
Buffer for TCP/IP and socket communication
--select_limit=#    Automatic limit for SELECT when using --safe-updates
--max_join_size=#   Automatic limit for rows in a join when using
--safe-updates
--secure-auth       Refuse client connecting to server if it uses old
(pre-4.1.1) protocol
--show-warnings     Show warnings after every statement.

Default options are read from the following files in the given order:
C:\my.ini C:\my.cnf C:\WINDOWS\my.ini C:\WINDOWS\my.cnf D:\MySQL\my.ini D:\MySQL\my.cnf
The following groups are read: mysql client
The following options may be given as the first argument:
--print-defaults Print the program argument list and exit
--no-defaults  Do not read default options from any options file
--defaults-file=# Only read default options from the given file #
--defaults-extra-file=# Read this file after the global files are read

Variables (--variable-name=value)
and boolean options {FALSE|TRUE}  Value (after reading options)
--------------------------------- -----------------------------
auto-rehash                       TRUE
character-sets-dir                (No default value)
default-character-set             utf8
compress                          FALSE
database                          (No default value)
delimiter                         ;
vertical                          FALSE
force                             FALSE
named-commands                    FALSE
local-infile                      FALSE
no-beep                           FALSE
host                              (No default value)
html                              FALSE
xml                               FALSE
line-numbers                      TRUE
unbuffered                        FALSE
column-names                      TRUE
sigint-ignore                     FALSE
port                              3306
prompt                            mysql>
quick                             FALSE
raw                               FALSE
reconnect                         TRUE
shared-memory-base-name           (No default value)
socket                            (No default value)
ssl                               FALSE
ssl-ca                            (No default value)
ssl-capath                        (No default value)
ssl-cert                          (No default value)
ssl-cipher                        (No default value)
ssl-key                           (No default value)
ssl-verify-server-cert            FALSE
table                             FALSE
debug-info                        FALSE
user                              (No default value)
safe-updates                      FALSE
i-am-a-dummy                      FALSE
connect_timeout                   0
max_allowed_packet                16777216
net_buffer_length                 16384
select_limit                      1000
max_join_size                     1000000
secure-auth                       FALSE
show-warnings                     FALSE