命令中含有不能识别的短语或关键字 VF

在VF中想dbf插入一条记录，记录如下
insert into sys3 (zwtz) values ('1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg1234567891234567891234567891234567891234567899abcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefgabcdefg')


报：命令中含有不能识别的短语或关键字
但是同样的sql在access，sqlserver 2000 中都可以插入 为什么啊？急

补充：VB ,  数据库(包含打印，安装，报表)