我正在尝试为查询全文索引表的结果添加分页。这是查询:
普通查询
SELECT *,MATCH(title) AGAINST ("+samsung +galaxy +s3" IN BOOLEAN MODE)
as score FROM `deals` WHERE `image`!='' AND category=15032 ORDER BY score DESC;
它返回 183 行。
尝试进行分页
SELECT SQL_CALC_FOUND_ROWS *,MATCH(title) AGAINST
("+samsung +galaxy +s3" IN BOOLEAN MODE) as score FROM `deals`
WHERE `image`!='' AND category=15032 ORDER BY score DESC LIMIT 8;
按预期返回 8 行，因为我想每页显示 8 个项目。
然后
SELECT FOUND_ROWS();
它返回 20 项，而不是原始查询中的 183。我不确定是什么原因造成的。你能帮我解决这个问题吗？
谢谢。
最佳答案
你做错了，要进行分页你需要两个限制，开始和结束，看看这个例子并将限制正确添加到你的代码中
mysql> select * from t1 order by actor_id;
+----------+-------------+--------------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+-------------+--------------+---------------------+
| 1 | PENELOPE | GUINESS | 2006-02-15 04:34:33 |
| 2 | NICK | WAHLBERG | 2006-02-15 04:34:33 |
| 3 | ED | CHASE | 2006-02-15 04:34:33 |
| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |
| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |
| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |
| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |
| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |
| 9 | JOE | SWANK | 2006-02-15 04:34:33 |
| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |
| 11 | ZERO | CAGE | 2006-02-15 04:34:33 |
| 12 | KARL | BERRY | 2006-02-15 04:34:33 |
| 13 | UMA | WOOD | 2006-02-15 04:34:33 |
| 14 | VIVIEN | BERGEN | 2006-02-15 04:34:33 |
| 15 | CUBA | OLIVIER | 2006-02-15 04:34:33 |
| 16 | FRED | COSTNER | 2006-02-15 04:34:33 |
| 17 | HELEN | VOIGHT | 2006-02-15 04:34:33 |
| 18 | DAN | TORN | 2006-02-15 04:34:33 |
| 19 | BOB | FAWCETT | 2006-02-15 04:34:33 |
| 20 | LUCILLE | TRACY | 2006-02-15 04:34:33 |
....
+----------+-------------+--------------+---------------------+
201 rows in set (0.00 sec)
现在你应用限制，开始和结束
mysql> select * from t1 order by actor_id limit 0,5;
+----------+------------+--------------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+------------+--------------+---------------------+
| 1 | PENELOPE | GUINESS | 2006-02-15 04:34:33 |
| 2 | NICK | WAHLBERG | 2006-02-15 04:34:33 |
| 3 | ED | CHASE | 2006-02-15 04:34:33 |
| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |
| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |
+----------+------------+--------------+---------------------+
5 rows in set (0.00 sec)
mysql> select * from t1 order by actor_id limit 6,5;
+----------+------------+-----------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+------------+-----------+---------------------+
| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |
| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |
| 9 | JOE | SWANK | 2006-02-15 04:34:33 |
| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |
| 11 | ZERO | CAGE | 2006-02-15 04:34:33 |
+----------+------------+-----------+---------------------+
5 rows in set (0.00 sec)
mysql> select * from t1 order by actor_id limit 11,5;
+----------+------------+-----------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+------------+-----------+---------------------+
| 12 | KARL | BERRY | 2006-02-15 04:34:33 |
| 13 | UMA | WOOD | 2006-02-15 04:34:33 |
| 14 | VIVIEN | BERGEN | 2006-02-15 04:34:33 |
| 15 | CUBA | OLIVIER | 2006-02-15 04:34:33 |
| 16 | FRED | COSTNER | 2006-02-15 04:34:33 |
+----------+------------+-----------+---------------------+
5 rows in set (0.00 sec)
所以想法是您使用 LIMIT $begin,$number_results，当您单击下一步时，它将获取 number_result + total_result_per_page 并将其放入 $begin。假设您在第 3 页，每页显示 10 个结果。($begin=10+10+10=30)
选择 ..... where .... order ... LIMIT 30,10
电子数据交换:
found_rows 将从表的开头返回到您的限制，
mysql> select * from t2 order by actor_id limit 10;
+----------+------------+--------------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+------------+--------------+---------------------+
| 1 | PENELOPE | GUINESS | 2006-02-15 04:34:33 |
| 2 | NICK | WAHLBERG | 2006-02-15 04:34:33 |
| 3 | ED | CHASE | 2006-02-15 04:34:33 |
| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |
| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |
| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |
| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |
| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |
| 9 | JOE | SWANK | 2006-02-15 04:34:33 |
| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |
+----------+------------+--------------+---------------------+
10 rows in set (0.00 sec)
mysql> select found_rows();
+--------------+
| found_rows() |
+--------------+
| 10 |
+--------------+
1 row in set (0.00 sec)
mysql> select * from t2 order by actor_id limit 2,10;
+----------+------------+--------------+---------------------+
| actor_id | first_name | last_name | last_update |
+----------+------------+--------------+---------------------+
| 3 | ED | CHASE | 2006-02-15 04:34:33 |
| 4 | JENNIFER | DAVIS | 2006-02-15 04:34:33 |
| 5 | JOHNNY | LOLLOBRIGIDA | 2006-02-15 04:34:33 |
| 6 | BETTE | NICHOLSON | 2006-02-15 04:34:33 |
| 7 | GRACE | MOSTEL | 2006-02-15 04:34:33 |
| 8 | MATTHEW | JOHANSSON | 2006-02-15 04:34:33 |
| 9 | JOE | SWANK | 2006-02-15 04:34:33 |
| 10 | CHRISTIAN | GABLE | 2006-02-15 04:34:33 |
| 11 | ZERO | CAGE | 2006-02-15 04:34:33 |
| 12 | KARL | BERRY | 2006-02-15 04:34:33 |
+----------+------------+--------------+---------------------+
10 rows in set (0.00 sec)
mysql> select found_rows();
+--------------+
| found_rows() |
+--------------+
| 12 |
+--------------+
1 row in set (0.00 sec)
它是 12 因为 10 个结果显示 + id 1 和 2 + 10 个显示结果
关于php - 全文搜索中的 MySql SQL_CALC_FOUND_ROWS 问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/11135802/