列名以数字开头? [英] Column Name beginning with a number?

问题描述

我的一个表中有一个列名:3RD_DIAG_CODE - VARCHAR2 (10 Byte)

I have a column name in one of my tables called: 3RD_DIAG_CODE - VARCHAR2 (10 Byte)

当我尝试运行查询时，它给我突出显示3RD_DIAG_CODE的以下错误.

When I try to run a query, it gives me the following error highlighting 3RD_DIAG_CODE.

ORA-00923:在预期位置找不到FROM关键字.

ORA-00923: FROM keyword not found where expected.

如何将这个字段带入而不会在每次将其带入时都引发错误呢?

How can I bring this field in without it throwing an error every time I bring this field in?

推荐答案

如果您使用以数字开头的列名，则需要使用双引号.例如:

If you are using column names that start with a number then you need to use double quotes. For example:

create table foo (
"3RD_DIAG_CODE" varchar2(10 byte) --make sure you use uppercase for variable name
);

insert into foo values ('abc');
insert into foo values ('def');
insert into foo values ('ghi');
insert into foo values ('jkl');
insert into foo values ('mno');
commit;

select * from foo;

3RD_DIAG_C
----------
abc
def
ghi
jkl
mno

select 3RD_DIAG_CODE from foo;

RD_DIAG_CODE
------------
       3
       3
       3
       3
       3

select "3RD_DIAG_CODE" from foo;

3RD_DIAG_C
----------
abc
def
ghi
jkl
mno

对于错误消息本身，您可能(如BQ所写)在select子句中缺少逗号.

As for the error message itself, you are probably (as BQ wrote) missing a comma from the select clause.

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