집 >데이터 베이스 >MySQL 튜토리얼 >mysql记录集中记录序号,MySQL中实现rownum功能类似的语句_MySQL
mysql记录集中记录序号,MySQL中实现rownum功能类似的语句_MySQL
- WBOY원래의
- 2016-06-01 13:45:29873검색
bitsCN.com
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
本文出自“老鸟的大心脏!”