MySQL AUTOINCREMENT MANUAL: https://es.stackoverflow.com/a/102278/29967, MySQL

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/*
    -- ATENCIÓN NO USE DROP TABLE CON SUS TABLAS REALES
    -- YA QUE DROP TABLE BORRARÁ SUS DATOS
    -- DROP TABLE SE USA AQUÍ SÓLO PARA PODER PROBAR LOS DATOS 
    */

SET FOREIGN_KEY_CHECKS=0; 
    DROP TABLE IF EXISTS `employers1_20170914`;
    DROP TABLE IF EXISTS `employers5000_20170914`;
    DROP TABLE IF EXISTS `employers10000_20170914`;
    DROP TABLE IF EXISTS `employers15000_20170914`;

SET FOREIGN_KEY_CHECKS=1;

/* NO COPIE LA SENTENCIA ^ DROP TABLE ^ EN SUS DATOS REALES */

CREATE TABLE IF NOT EXISTS  `employers1_20170914`  
    (
        `id` INT AUTO_INCREMENT PRIMARY KEY,
        `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL
    ) 
        ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
    ;

INSERT INTO `employers1_20170914` (`name`)
        VALUES
        ('Pedro'),
        ('Santiago'),
        ('Juan')
    ;

CREATE TABLE IF NOT EXISTS  `employers5000_20170914`  
    (
        `id` INT AUTO_INCREMENT PRIMARY KEY,
        `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL
    ) 
        ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
        AUTO_INCREMENT = 5000
    ;

INSERT INTO `employers5000_20170914` (`name`)
        VALUES
        ('Pedro-5000'),
        ('Santiago-5000'),
        ('Juan-5000')
    ;

CREATE TABLE IF NOT EXISTS  `employers10000_20170914`  
    (
        `id` INT AUTO_INCREMENT PRIMARY KEY,
        `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL
    ) 
        ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
        AUTO_INCREMENT = 10000
    ;

INSERT INTO `employers10000_20170914` (`name`)
        VALUES
        ('Pedro-10000'),
        ('Santiago-10000'),
        ('Juan-10000')
    ;

CREATE TABLE IF NOT EXISTS  `employers15000_20170914`  
    (
        `id` INT AUTO_INCREMENT PRIMARY KEY,
        `name` varchar(100) COLLATE utf8_unicode_ci NOT NULL
    ) 
        ENGINE=InnoDB DEFAULT CHARSET=utf8 COLLATE=utf8_unicode_ci
        AUTO_INCREMENT = 15000
    ;

INSERT INTO `employers15000_20170914` (`name`)
        VALUES
        ('Pedro-15000'),
        ('Santiago-15000'),
        ('Juan-15000')
    ;

SELECT * FROM `employers1_20170914`;
    SELECT * FROM `employers5000_20170914`;
    SELECT * FROM `employers10000_20170914`;
    SELECT * FROM `employers15000_20170914`;


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MySQL AUTOINCREMENT MANUAL: https://es.stackoverflow.com/a/102278/2996...