Basic MySql Commands

1. Shell to MySql: mysql -uroot -piict123  or mysql -uroot -p (and put password)

2. Select Database:  mysql> use admissio_kuet;
3. Show table of the Database: show tables;

4. Show Database:  show databases;

5. Show Column of a Table: SHOW COLUMNS FROM ug_applicant_general_info;

6. Show Top 10 Rows of a Table: SELECT * FROM uga_hsc_req LIMIT 10;

7. Backup Database: [root@admission /]# mysqldump -uroot -p admissio_kuet > backupfile.sql
Enter password: (put password)

8. Restore Database: mysql -uroot -p --one-database admissio_kuet < backupfile.sql

Enter password: (put password)

9. Other INSERT, UPDATE, DELETE, DROP command is just like QSL Commands.

 

4.5.6 mysqlshow — Display Database, Table, and Column Information

The mysqlshow client can be used to quickly see which databases exist, their tables, or a table’s columns or indexes.

mysqlshow provides a command-line interface to several SQL SHOW statements. See Section 13.7.5, “SHOW Syntax”. The same information can be obtained by using those statements directly. For example, you can issue them from the mysql client program.

Invoke mysqlshow like this:

shell> mysqlshow [options] [db_name [tbl_name [col_name]]]
  • If no database is given, a list of database names is shown.
  • If no table is given, all matching tables in the database are shown.
  • If no column is given, all matching columns and column types in the table are shown.

The output displays only the names of those databases, tables, or columns for which you have some privileges.

If the last argument contains shell or SQL wildcard characters (*, ?, %, or _), only those names that are matched by the wildcard are shown. If a database name contains any underscores, those should be escaped with a backslash (some Unix shells require two) to get a list of the proper tables or columns. * and ? characters are converted into SQL % and _ wildcard characters. This might cause some confusion when you try to display the columns for a table with a _ in the name, because in this case, mysqlshow shows you only the table names that match the pattern. This is easily fixed by adding an extra % last on the command line as a separate argument.

mysqlshow supports the following options, which can be specified on the command line or in the [mysqlshow] and [client] groups of an option file. For information about option files used by MySQL programs, see Section 4.2.6, “Using Option Files”.

Table 4.7 mysqlshow Options

Format Description Introduced
–compress Compress all information sent between client and server
–count Show the number of rows per table 5.0.6
–debug[=debug_options] Write a debugging log
–default-character-set=charset_name Specify default character set
–defaults-extra-file=file_name Read option file in addition to usual option files
–defaults-file=file_name Read only named option file
–defaults-group-suffix=str Option group suffix value 5.0.10
–help Display help message and exit
–host=host_name Connect to MySQL server on given host
–keys Show table indexes
–no-defaults Read no option files
–password[=password] Password to use when connecting to server
–pipe On Windows, connect to server using named pipe
–port=port_num TCP/IP port number to use for connection
–print-defaults Print defaults
–protocol=type Connection protocol to use
–shared-memory-base-name=name The name of shared memory to use for shared-memory connections
–show-table-type Show a column indicating the table type 5.0.4
–socket=path For connections to localhost, the Unix socket file to use
–ssl Enable SSL for connection
–ssl-ca=file_name Path of file that contains list of trusted SSL CAs
–ssl-capath=dir_name Path of directory that contains trusted SSL CA certificates in PEM format
–ssl-cert=file_name Path of file that contains X509 certificate in PEM format
–ssl-cipher=cipher_list List of permitted ciphers to use for SSL encryption
–ssl-key=file_name Path of file that contains X509 key in PEM format
–ssl-verify-server-cert Verify server Common Name value in its certificate against host name used when connecting to server 5.0.23
–status Display extra information about each table
–user=user_name, MySQL user name to use when connecting to server
–verbose Verbose mode
–version Display version information and exit

 

  • --help, -?

    Display a help message and exit.

  • --character-sets-dir=path

    The directory where character sets are installed. See Section 10.5, “Character Set Configuration”.

  • --compress, -C

    Compress all information sent between the client and the server if both support compression.

  • --count

    Show the number of rows per table. This can be slow for non-MyISAM tables. This option was added in MySQL 5.0.6.

  • --debug[=debug_options], -# [debug_options]

    Write a debugging log. A typical debug_options string is d:t:o,file_name. The default is d:t:o.

  • --default-character-set=charset_name

    Use charset_name as the default character set. See Section 10.5, “Character Set Configuration”.

  • --defaults-extra-file=file_name

    Read this option file after the global option file but (on Unix) before the user option file. As of MySQL 5.0.6, if the file does not exist or is otherwise inaccessible, an error occurs. file_name is the full path name to the file.

  • --defaults-file=file_name

    Use only the given option file. If the file does not exist or is otherwise inaccessible, an error occurs. file_name is the full path name to the file.

  • --defaults-group-suffix=str

    Read not only the usual option groups, but also groups with the usual names and a suffix of str. For example, mysqlshow normally reads the [client] and [mysqlshow] groups. If the --defaults-group-suffix=_other option is given, mysqlshow also reads the [client_other] and [mysqlshow_other] groups. This option was added in MySQL 5.0.10.

  • --host=host_name, -h host_name

    Connect to the MySQL server on the given host.

  • --keys, -k

    Show table indexes.

  • --no-defaults

    Do not read any option files. If program startup fails due to reading unknown options from an option file, --no-defaults can be used to prevent them from being read.

  • --password[=password], -p[password]

    The password to use when connecting to the server. If you use the short option form (-p), you cannot have a space between the option and the password. If you omit the password value following the --password or -p option on the command line, mysqlshow prompts for one.

    Specifying a password on the command line should be considered insecure. See Section 6.1.2.1, “End-User Guidelines for Password Security”. You can use an option file to avoid giving the password on the command line.

  • --pipe, -W

    On Windows, connect to the server using a named pipe. This option applies only if the server supports named-pipe connections.

  • --port=port_num, -P port_num

    The TCP/IP port number to use for the connection.

  • --print-defaults

    Print the program name and all options that it gets from option files.

  • --protocol={TCP|SOCKET|PIPE|MEMORY}

    The connection protocol to use for connecting to the server. It is useful when the other connection parameters normally would cause a protocol to be used other than the one you want. For details on the permissible values, see Section 4.2.2, “Connecting to the MySQL Server”.

  • --shared-memory-base-name=name

    On Windows, the shared-memory name to use, for connections made using shared memory to a local server. The default value is MYSQL. The shared-memory name is case sensitive.

    The server must be started with the --shared-memory option to enable shared-memory connections.

  • --show-table-type, -t

    Show a column indicating the table type, as in SHOW FULL TABLES. The type is BASE TABLE or VIEW. This option was added in MySQL 5.0.4.

  • --socket=path, -S path

    For connections to localhost, the Unix socket file to use, or, on Windows, the name of the named pipe to use.

  • --ssl*

    Options that begin with --ssl specify whether to connect to the server using SSL and indicate where to find SSL keys and certificates. See Section 6.3.6.4, “SSL Command Options”.

  • --status, -i

    Display extra information about each table.

  • --user=user_name, -u user_name

    The MySQL user name to use when connecting to the server.

  • --verbose, -v

    Verbose mode. Print more information about what the program does. This option can be used multiple times to increase the amount of information.

  • --version, -V

    Display version information and exit.

http://dev.mysql.com/doc/refman/5.0/en/mysqlshow.html

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