preferen是不是在vfp中是不是保留字

[beadly]

我有一个表其中一个字段为preferen,
用update custindent set preferen=m.npreferen WHERE .....时竟然通不过
我还以为是哪里错了呢?
用replace 就可以?
环境:vfp7+sp1+win2000+sp4

[magnetmoon]

是

SELECT [ALL | DISTINCT] [TOP nExpr [PERCENT]]
[Alias.] Select_Item [AS Column_Name]
[, [Alias.] Select_Item [AS Column_Name] ...]
FROM [FORCE]
[DatabaseName!]Table [Local_Alias]
[[INNER | LEFT [OUTER] | RIGHT [OUTER] | FULL [OUTER] JOIN
DatabaseName!]Table [Local_Alias]
[ON JoinCondition 
[[INTO Destination]
| [TO FILE FileName [ADDITIVE] | TO PRINTER [PROMPT]
| TO SCREEN]]

[PREFERENCE PreferenceName] &&&&&&&&&&&&&&&&&&&&&&&&&&&&&
[NOCONSOLE]
[PLAIN]
....