ALTER TABLE `table` CHANGE `zip` `zip` CHAR(5); #changes type
UPDATE table SET `zip`=LPAD(`zip`, 5, '0'); #pads everything

mysql -u root -D "listento_calculate" -e "SELECT DISTINCT email,date_format(insertDate,'%d/%m/%Y') from users WHERE email like '%@%' into outfile 'users20110228_1.csv'"

mysqldump -u root -p --max_allowed_packet=512M -B dbname  > filename.mysql

Pour restaurer : 
mysql -u root -psecret workflow < dump.sql

mysql -u databaseuser -p -h localhost --default-character-set=utf8 databasename < sqlfile.sql

GRANT SELECT, INSERT, UPDATE, DELETE, CREATE ON database.* TO 'user'@'localhost' IDENTIFIED BY 'password';

UPDATE tbl_Name SET ZipCodes = concat('0',ZipCodes) WHERE length(ZipCodes) = 4

update tabla set campo = convert( convert(campo using binary) using utf8);
alter table tabla charset = utf8;
alter database basedatos charset = utf8;

mysqldump -h [host_ip] --port=[3306] --user=[username] --password=[password] --opt --routines [database_name] | mysql -u [username] -p[password] --port=[3306] [database_name]

SET NAMES utf8;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
--  Table structure for `languages`
-- ----------------------------
DROP TABLE IF EXISTS `languages`;
CREATE TABLE `languages` (
  `id` int(11) NOT NULL auto_increment,
  `name` mediumtext NOT NULL,
  `short` mediumtext NOT NULL,
  PRIMARY KEY  (`id`)
) ENGINE=MyISAM AUTO_INCREMENT=108 DEFAULT CHARSET=utf8;

-- ----------------------------
--  Records of `languages`
-- ----------------------------
BEGIN;
INSERT INTO `languages` VALUES ('1', 'English', 'en'), ('2', 'German', 'de'), ('3', 'French', 'fr'), ('4', 'Dutch', 'nl'), ('5', 'Italian', 'it'), ('6', 'Spanish', 'es'), ('7', 'Polish', 'pl'), ('8', 'Russian', 'ru'), ('9', 'Japanese', 'ja'), ('10', 'Portuguese', 'pt'), ('11', 'Swedish', 'sv'), ('12', 'Chinese', 'zh'), ('13', 'Catalan', 'ca'), ('14', 'Ukrainian', 'uk'), ('15', 'Norwegian (Bokmål)', 'no'), ('16', 'Finnish', 'fi'), ('17', 'Vietnamese', 'vi'), ('18', 'Czech', 'cs'), ('19', 'Hungarian', 'hu'), ('20', 'Korean', 'ko'), ('21', 'Indonesian', 'id'), ('22', 'Turkish', 'tr'), ('23', 'Romanian', 'ro'), ('24', 'Persian', 'fa'), ('25', 'Arabic', 'ar'), ('26', 'Danish', 'da'), ('27', 'Esperanto', 'eo'), ('28', 'Serbian', 'sr'), ('29', 'Lithuanian', 'lt'), ('30', 'Slovak', 'sk'), ('31', 'Malay', 'ms'), ('32', 'Hebrew', 'he'), ('33', 'Bulgarian', 'bg'), ('34', 'Slovenian', 'sl'), ('35', 'Volapük', 'vo'), ('36', 'Kazakh', 'kk'), ('37', 'Waray-Waray', 'war'), ('38', 'Basque', 'eu'), ('39', 'Croatian', 'hr'), ('40', 'Hindi', 'hi'), ('41', 'Estonian', 'et'), ('42', 'Azerbaijani', 'az'), ('43', 'Galician', 'gl'), ('44', 'Simple English', 'simple'), ('45', 'Norwegian (Nynorsk)', 'nn'), ('46', 'Thai', 'th'), ('47', 'Newar / Nepal Bhasa', 'new'), ('48', 'Greek', 'el'), ('49', 'Aromanian', 'roa-rup'), ('50', 'Latin', 'la'), ('51', 'Occitan', 'oc'), ('52', 'Tagalog', 'tl'), ('53', 'Haitian', 'ht'), ('54', 'Macedonian', 'mk'), ('55', 'Georgian', 'ka'), ('56', 'Serbo-Croatian', 'sh'), ('57', 'Telugu', 'te'), ('58', 'Piedmontese', 'pms'), ('59', 'Cebuano', 'ceb'), ('60', 'Tamil', 'ta'), ('61', 'Belarusian (Taraškievica)', 'be-x-old'), ('62', 'Breton', 'br'), ('63', 'Latvian', 'lv'), ('64', 'Javanese', 'jv'), ('65', 'Albanian', 'sq'), ('66', 'Belarusian', 'be'), ('67', 'Marathi', 'mr'), ('68', 'Welsh', 'cy'), ('69', 'Luxembourgish', 'lb'), ('70', 'Icelandic', 'is'), ('71', 'Bosnian', 'bs'), ('72', 'Yoruba', 'yo'), ('73', 'Malagasy', 'mg'), ('74', 'Aragonese', 'an'), ('75', 'Bishnupriya Manipuri', 'bpy'), ('76', 'Lombard', 'lmo'), ('77', 'West Frisian', 'fy'), ('78', 'Bengali', 'bn'), ('79', 'Ido', 'io'), ('80', 'Swahili', 'sw'), ('81', 'Gujarati', 'gu'), ('82', 'Malayalam', 'ml'), ('83', 'Western Panjabi', 'pnb'), ('84', 'Afrikaans', 'af'), ('85', 'Low Saxon', 'nds'), ('86', 'Sicilian', 'scn'), ('87', 'Urdu', 'ur'), ('88', 'Kurdish', 'ku'), ('89', 'Cantonese', 'zh-yue'), ('90', 'Armenian', 'hy'), ('91', 'Quechua', 'qu'), ('92', 'Sundanese', 'su'), ('93', 'Nepali', 'ne'), ('94', 'Zazaki', 'diq'), ('95', 'Asturian', 'ast'), ('96', 'Tatar', 'tt'), ('97', 'Neapolitan', 'nap'), ('98', 'Irish', 'ga'), ('99', 'Chuvash', 'cv'), ('100', 'Samogitian', 'bat-smg'), ('101', 'Walloon', 'wa'), ('102', 'Amharic', 'am'), ('103', 'Kannada', 'kn'), ('104', 'Alemannic', 'als'), ('105', 'Buginese', 'bug'), ('106', 'Burmese', 'my'), ('107', 'Interlingua', 'ia');
COMMIT;

#1

DATE_FORMAT( FROM_DAYS( TO_DAYS(CURDATE()) - TO_DAYS(@dob) ), '%Y' ) + 0 
YEAR(CURDATE()) - YEAR(@dob) - ( RIGHT(CURDATE(),5) < RIGHT(@dob,5) ) 

#2
ROUND((((YEAR(NOW()) - YEAR(@dob)))*12 + (((MONTH(NOW()) - MONTH(@dob)))))/12, 2)