通过代码更改表中字段的数据类型 [英] Changing the data type of a field in a table thru code
问题描述
有谁能告诉我如何使用make table查询更改创建的表中字段的数据类型
？该字段是二进制文件，必须更改为文本。
在运行
make table查询时，是否有人知道如何指定字段类型？
谢谢，
Sven
你不能改变数据的类型表中的字段。您必须使用您的更改创建一个新表
，加载数据并删除旧表。
-
Danny J. Lesandrini
dl*********@hotmail.com
http://amazecreations.com/datafast
"彼得" < PE *** @ diel.co.za>在消息新闻中写道：br ********** @ ctb-nnrp2.saix.net ...任何人都可以告诉我如何更改某个字段的数据类型使用make table查询创建表格？该字段是二进制文件，必须更改为文本。
交替有人知道如何在运行
生成表查询时指定字段类型吗？
谢谢， Sven
谢谢我的担心，但在sql语句中是否有任何方法可以指定
要添加到新表格中的字段的数据类型
Danny J. Lesandrini < DL ********* @ hotmail.com>在留言中写道
news：br *********** @ ID-82595.news.uni-berlin.de ...你可以不要更改表中字段的数据类型。您必须使用您的更改创建
a新表，加载数据并删除旧表。
-
Danny J. Lesandrini
dl ********* @ hotmail.com
http://amazecreations.com/datafast
" Peter" < PE *** @ diel.co.za>在消息中写道
news：br ********** @ ctb-nnrp2.saix.net ...有谁能告诉我如何更改使用make table查询创建的表
中字段的数据类型？该字段是二进制文件，必须更改为
文本。在运行
a make table查询时，还有人知道如何指定字段类型吗？
谢谢，
Sven
2003年12月10日星期三14:25:39 +0200，彼得 < PE *** @ diel.co.za>写道：
有人能告诉我如何使用make table查询更改创建的表中字段的数据类型吗？该字段是二进制文件，必须更改为文本。
交替有人知道如何在运行
make表查询时指定字段类型吗？
你需要在你的查询中改变它。
假设你的字段在表1中被称为bField，你的
"输出"字段可能类似于
sField：Str（[Table1]。[bField]）
我必须使用此转换数值来字符串和副词
$ b $反之亦然。
不知道它是否适合你的情况......
Tym
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Can anyone tell me how to change the data type of a field in a table created
with a make table query? The field is a binary and must be changed to text.
alternately does anyone know how to specify the field type when running a
make table query?
Thanks,
Sven
You can''t change the data type of a field in a table. You have to create a new table
with your changes, load the data and drop the old table.
--
Danny J. Lesandrini
dl*********@hotmail.com
http://amazecreations.com/datafast
"Peter" <pe***@diel.co.za> wrote in message news:br**********@ctb-nnrp2.saix.net...Can anyone tell me how to change the data type of a field in a table created
with a make table query? The field is a binary and must be changed to text.
alternately does anyone know how to specify the field type when running a
make table query?
Thanks,
Sven
Thanks I feared as much, but is there any way in a sql statement to specify
the data-types of the fields being added into a new table
"Danny J. Lesandrini" <dl*********@hotmail.com> wrote in message
news:br***********@ID-82595.news.uni-berlin.de...You can''t change the data type of a field in a table. You have to create a new table with your changes, load the data and drop the old table.
--
Danny J. Lesandrini
dl*********@hotmail.com
http://amazecreations.com/datafast
"Peter" <pe***@diel.co.za> wrote in message
news:br**********@ctb-nnrp2.saix.net...Can anyone tell me how to change the data type of a field in a table created with a make table query? The field is a binary and must be changed to text. alternately does anyone know how to specify the field type when running a make table query?
Thanks,
Sven
On Wed, 10 Dec 2003 14:25:39 +0200, "Peter" <pe***@diel.co.za> wrote:
Can anyone tell me how to change the data type of a field in a table created
with a make table query? The field is a binary and must be changed to text.
alternately does anyone know how to specify the field type when running a
make table query?
You need to alter it in your Query.
Presuming that your field is called bField in table Table1, your
"output" field could be something like
sField: Str([Table1].[bField])
I have to use this converting numeric values to string ones , and vice
versa.
Don''t know if it will work with your case though...
Tym
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