数据挖掘问题:varchar错误 [英] datamining problem: varchar mistake

问题描述

粗体部分出现错误的地方:数据挖掘问题:varchar错误

The bold part is where it meets mistake : datamining problem: varchar mistake

create mining model DecisionTree_LevelPredict
(	
	stu_ID varchar(50) key,
	stu_gender varchar(50) discrete,
	stu_birthyear varchar(50) discrete,
	stu_education varchar(50) discrete,
	stu_levels varchar(50) predict
)
using Microsoft_Desicion_Trees (Complexity_Penalty=0.5)

insert into DecisionTree_LevelPredict
(stu_ID,stu_gender,stu_birthyear,stu_education,stu_levels)
openrowset ('Microsoft.Jet.OLEDB.4.0','Data Source=dbo.customer;','select ID,gender,birthyear,education,levels')
select * from DecisionTree_LevelPredict

推荐答案

我认为您应该将varchar(50)更改为TEXT.

I think you should change varchar(50) to TEXT.

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