w同结构表读写合并。

 DROP PROCEDURE IF EXISTS w_ww_amzasin;

 DELIMITER /w/

 CREATE PROCEDURE w_ww_amzasin()

 BEGIN

   DECLARE done INT DEFAULT FALSE;

   DECLARE w_asin VARCHAR(16);

   DECLARE w_country VARCHAR(6);

   DECLARE wcur CURSOR FOR

                         SELECT asin,country FROM grab_amzreviews_asins

                                 UNION DISTINCT

                         SELECT asin,country FROM grab_amzsimilar_seller_asins

                                 UNION DISTINCT

                         SELECT asin,country FROM grab_amzlisting

                                 WHERE CONCAT(asin,LOWER(country)) NOT IN

                                     (SELECT CONCAT(asin,LOWER(country)) FROM amzasin) ;

   DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

   OPEN wcur;

   read_loop: LOOP

     FETCH wcur INTO w_asin,w_country;

     IF done THEN LEAVE read_loop;

     END IF;

         SET @w_nothhtps='www.amazon.';

         SET @w_most=CONCAT(LOWER(w_country),'/product/dp/',w_asin);

         CASE  LOWER(w_country)

                 WHEN 'ca' THEN SELECT 'w';

                 WHEN 'in' THEN SELECT 'w';

                 WHEN 'es' THEN SELECT 'w';

                 WHEN 'it' THEN SELECT 'w';

                 WHEN 'fr' THEN SELECT 'w';

                 WHEN 'jp' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'uk' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'mx' THEN SET @w_most=CONCAT('com.',@w_most);

                 WHEN 'us' THEN SET @w_most=CONCAT('com/gp/product/',w_asin);

       ELSE

         BEGIN

         END;

     END CASE;

         SET @w_nothhtps=CONCAT(@w_nothhtps,@w_most);

         SET @wtmp = CONCAT('INSERT INTO  amzasin (asin,country,url) VALUES ( "',w_asin,'","',w_country,'","',@w_nothhtps,'")');

         PREPARE  stmt FROM @wtmp ;

         EXECUTE  stmt ;

         DROP PREPARE stmt;

   END LOOP;

   CLOSE wcur;

 END/w/

 DELIMITER;

 CALL w_ww_amzasin( );

 DROP PROCEDURE IF EXISTS w_ww_amzasin;

 DELIMITER /w/

 CREATE PROCEDURE w_ww_amzasin()

 BEGIN

   DECLARE done INT DEFAULT FALSE;

   DECLARE w_asin VARCHAR(16);

   DECLARE w_country VARCHAR(6);

   DECLARE wcur CURSOR FOR SELECT asin,country FROM grab_amzlisting WHERE CONCAT(asin,LOWER(country)) NOT IN (SELECT CONCAT(asin,LOWER(country)) FROM amzasin );

   DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

   OPEN wcur;

   read_loop: LOOP

     FETCH wcur INTO w_asin,w_country;

     IF done THEN LEAVE read_loop;

     END IF;

         SET @w_nothhtps='www.amazon.';

         SET @w_most=CONCAT(LOWER(w_country),'/product/dp/',w_asin);

         CASE  LOWER(w_country)

                 WHEN 'ca' THEN SELECT 'w';

                 WHEN 'in' THEN SELECT 'w';

                 WHEN 'es' THEN SELECT 'w';

                 WHEN 'it' THEN SELECT 'w';

                 WHEN 'fr' THEN SELECT 'w';

                 WHEN 'jp' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'uk' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'mx' THEN SET @w_most=CONCAT('com.',@w_most);

                 WHEN 'us' THEN SET @w_most=CONCAT('com/gp/product/',w_asin);

       ELSE

         BEGIN

         END;

     END CASE;

         SET @w_nothhtps=CONCAT(@w_nothhtps,@w_most);

         SET @wtmp = CONCAT('INSERT INTO  amzasin (asin,country,url) VALUES ( "',w_asin,'","',w_country,'","',@w_nothhtps,'")');

         PREPARE  stmt FROM @wtmp ;

         EXECUTE  stmt ;

         DROP PREPARE stmt;

   END LOOP;

   CLOSE wcur;

 END/w/

 DELIMITER;

 CALL w_ww_amzasin( );

 DROP PROCEDURE IF EXISTS w_ww_amzasin;

 DELIMITER /w/

 CREATE PROCEDURE w_ww_amzasin()

 BEGIN

   DECLARE done INT DEFAULT FALSE;

   DECLARE w_asin VARCHAR(16);

   DECLARE w_country VARCHAR(6);

   DECLARE wcur CURSOR FOR SELECT asin,country FROM grab_amzsimilar_seller_asins WHERE CONCAT(asin,LOWER(country)) NOT IN (SELECT CONCAT(asin,LOWER(country)) FROM amzasin );

   DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

   OPEN wcur;

   read_loop: LOOP

     FETCH wcur INTO w_asin,w_country;

     IF done THEN LEAVE read_loop;

     END IF;

         SET @w_nothhtps='www.amazon.';

         SET @w_most=CONCAT(LOWER(w_country),'/product/dp/',w_asin);

         CASE  LOWER(w_country)

                 WHEN 'ca' THEN SELECT 'w';

                 WHEN 'in' THEN SELECT 'w';

                 WHEN 'es' THEN SELECT 'w';

                 WHEN 'it' THEN SELECT 'w';

                 WHEN 'fr' THEN SELECT 'w';

                 WHEN 'jp' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'uk' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'mx' THEN SET @w_most=CONCAT('com.',@w_most);

                 WHEN 'us' THEN SET @w_most=CONCAT('com/gp/product/',w_asin);

       ELSE

         BEGIN

         END;

     END CASE;

         SET @w_nothhtps=CONCAT(@w_nothhtps,@w_most);

         SET @wtmp = CONCAT('INSERT INTO  amzasin (asin,country,url) VALUES ( "',w_asin,'","',w_country,'","',@w_nothhtps,'")');

         PREPARE  stmt FROM @wtmp ;

         EXECUTE  stmt ;

         DROP PREPARE stmt;

   END LOOP;

   CLOSE wcur;

 END/w/

 DELIMITER;

 CALL w_ww_amzasin( );

 DROP PROCEDURE IF EXISTS w_ww_amzasin;

 DELIMITER /w/

 CREATE PROCEDURE w_ww_amzasin()

 BEGIN

   DECLARE done INT DEFAULT FALSE;

   DECLARE w_asin VARCHAR(16);

   DECLARE w_country VARCHAR(6);

   DECLARE wcur CURSOR FOR SELECT asin,country FROM grab_amzreviews_asins WHERE CONCAT(asin,LOWER(country)) NOT IN (SELECT CONCAT(asin,LOWER(country)) FROM amzasin );

   DECLARE CONTINUE HANDLER FOR NOT FOUND SET done = TRUE;

   OPEN wcur;

   read_loop: LOOP

     FETCH wcur INTO w_asin,w_country;

     IF done THEN LEAVE read_loop;

     END IF;

         SET @w_nothhtps='www.amazon.';

         SET @w_most=CONCAT(LOWER(w_country),'/product/dp/',w_asin);

         CASE  LOWER(w_country)

                 WHEN 'ca' THEN SELECT 'w';

                 WHEN 'in' THEN SELECT 'w';

                 WHEN 'es' THEN SELECT 'w';

                 WHEN 'it' THEN SELECT 'w';

                 WHEN 'fr' THEN SELECT 'w';

                 WHEN 'jp' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'uk' THEN SET @w_most=CONCAT('co.',@w_most);

                 WHEN 'mx' THEN SET @w_most=CONCAT('com.',@w_most);

                 WHEN 'us' THEN SET @w_most=CONCAT('com/gp/product/',w_asin);

       ELSE

         BEGIN

         END;

     END CASE;

         SET @w_nothhtps=CONCAT(@w_nothhtps,@w_most);

         SET @wtmp = CONCAT('INSERT INTO  amzasin (asin,country,url) VALUES ( "',w_asin,'","',w_country,'","',@w_nothhtps,'")');

         PREPARE  stmt FROM @wtmp ;

         EXECUTE  stmt ;

         DROP PREPARE stmt;

   END LOOP;

   CLOSE wcur;

 END/w/

 DELIMITER;

 CALL w_ww_amzasin( );

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