sqlQuery：无法将ID号作为Character输入R？ [英] sqlQuery: impossible to get the ID number as Character into R?

问题描述

我正在ORACLE DATA BASE（DB）中使用 RODBC 包。一切都做得很好，但是我需要从该数据库中获取一张表，并使用一些变量作为字符类型，而不是数字。

I'm using the RODBC package inside an ORACLE DATA BASE (DB). Everything is doing very well, but I need to obtain a table from this DB and some variables as character type, not numbers.

所以，我这样查询：

e    ManzResul_VIII<-sqlQuery(con,"select distinct t.fono_id_dis,
            t.id_predio,
            t.co_calle,
            t.nu_casa,
            t.x,
            t.y,
            t.plancheta  from c_araya.proy_dist08_todo t  where nvl(t.fono_tipo_dis, '-') not in ('CLIENTE', 'POTENCIAL', 'CARTERA')  and nvl(t.x, 0) <> 0 ")

不可能将ID号作为Character获取，此查询将iDs变量的类型从字符为数字类型（ID开头为零，但已将其更改为数字）。我已经阅读了功能说明，但可以看到如何对其进行管理。

Is impossible to get the ID number as Character, this query change the type of my iDs variables from Character to Numeric type (The ID has a zero at the beginning, but has been changed it into a number). I have read the function description, but I can see how to manage it.

任何想法都会受到赞赏，谢谢！！

Any idea would be really appreciated, thanks in advance!

推荐答案

更改查询以将ID强制转换为所需的数据类型：

Change the query to cast the id to the data type you want:

select distinct cast(t.fono_id_dis as varchar(255)) as id
. . . 

这适用于大多数数据库。

This should work with most databases.

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