Question

Im trying to JOIN 2 tables and count the results.
I have these tables;

SET NAMES utf8;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
--  Table structure for `segments`
-- ----------------------------
DROP TABLE IF EXISTS `segments`;
CREATE TABLE `segments` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `substr_id` int(255) NOT NULL,
  `substr` varchar(255) NOT NULL,
  `count` int(11) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1;

-- ----------------------------
--  Records of `segments`
-- ----------------------------
BEGIN;
INSERT INTO `segments` VALUES ('1', '1', 'book', '2'), ('2', '2', 'ooki', '1'), ('3', '2', 'okin', '1'), ('4', '2', 'king', '1');
COMMIT;

-- ----------------------------
--  Table structure for `words`
-- ----------------------------
DROP TABLE IF EXISTS `words`;
CREATE TABLE `words` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `substr_id` int(11) NOT NULL,
  `word` varchar(255) NOT NULL,
  `cleaned` tinyint(1) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=latin1;

-- ----------------------------
--  Records of `words`
-- ----------------------------
BEGIN;
INSERT INTO `words` VALUES ('1', '1', 'book', '0'), ('2', '2', 'booking', '0'), ('3', '2', 'booking', '0'), ('4', '2', 'booking', '0');
COMMIT;

SET FOREIGN_KEY_CHECKS = 1;

Changed question with sql + data.

Im trying to :

 SELECT words with there count from segments.count based upon there substr_id. 

Anyone could help me get this done? Im not that good at SQL have red docs and some tutorials but don’t quite get how I should do all of above in a single query.

Answer 1

 SELECT word, count
   FROM words NATURAL JOIN segments;

Should do the trick. I’d recommend doing some more research. http://en.wikipedia.org/wiki/Join_(SQL)