mysql记录集中记录序号,MySQL中实现rownum功能类似的语句

MySQL 如何实现 Oracle 的 ROWNUM2010/01/28 23:56mysql> SELECT * FROM frutas;
+-----------+----------+
| nombre    | color    |
+-----------+----------+
| fresa     | rojo     |
| platano   | amarillo |
| manzana   | verde    |
| uva       | verde    |
| pera      | verde    |
| mandarina | naranja  |
| melocoton | marron   |
| limon     | amarillo |
+-----------+----------+
8 rows in set (0,00 sec)

【一条sql语句完成，不set变量】
SELECT @rownum:=@rownum+1 AS rownum, frutas.*
FROM (SELECT @rownum:=0) r, frutas;

mysql> SELECT @rownum:=@rownum+1 AS rownum, frutas.*
-> FROM (SELECT @rownum:=0) r, frutas;
+--------+-----------+----------+
| rownum | nombre    | color    |
+--------+-----------+----------+
|      1 | fresa     | rojo     |
|      2 | platano   | amarillo |
|      3 | manzana   | verde    |
|      4 | uva       | verde    |
|      5 | pera      | verde    |
|      6 | mandarina | naranja  |
|      7 | melocoton | marron   |
|      8 | limon     | amarillo |
+--------+-----------+----------+
8 rows in set (0,00 sec)

但是如何把这个查询放在 create view 里面
mysql> CREATE VIEW vw_frutas AS SELECT @rownum:=@rownum+1 AS rownum, frutas.*
->  FROM (SELECT @rownum:=0) r, frutas;
ERROR 1351 (HY000): View's SELECT contains a variable or parameter

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