Probs in modifying datatype of column!

hi there..
am having a table without data..as
Name Null? Type
FIRST_NAME VARCHAR2(15)
LAST_NAME CHAR(50)
ADDRESS CHAR(50)
CITY CHAR(50)
COUNTRY CHAR(25)
BIRTH_DATE DATE
now i need to change the data type of column char in to varchar2(15)..
in single step...not by..
alter table customer
modify first_name varchar2(15);
this takes so many steps for each column to modify..
plz guide me..

As a general rule you will get a better response to SQL questions in the Oracle PL/SQL forum
PL/SQL
For an answer and example for this specific question you can check out this website:
http://www.dba-oracle.com/t_alter_table_modify_column_syntax_example.htm

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Modifying datatype of columns across multiple tables

Hi,
I have a requirement where-in I have to modify the datatypes of columns across multiple tables. Is there any direct way to do this? I mean does oracle has any function or in-built functionality to achieve this.
Example;
Table1 -> col1 datatype needs to be changed to varchar2(10)
Table2 -> col2 datatype needs to be changed to varchar2(30)
Table3 -> col3 datatype needs to be changed to number.
and so on....
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Thanks,
Ishan

Hi Aman,
Seeing the replies, I think I was unclear in the requirements. But I guess you understood it fully, but still I would like to restate my question once again, just to be 100% sure.
What I actually want is that in one shot, I would be able to modify columns of multible tables.
eg, table1-> col1 changed to varchar2(20);
table2->col2 changed to varchar2(10)
table3-> col3 changed to number;
I know how to do it individually, but just wanted to check, if only one command can modify the datatypes of multiple tables/.
If not, I have already written half the script, but just for knowledge sake wanted to check if some feature is available in oracle for that.
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Ishan

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case "Unit 3":
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Hi,
Per my understanding, the TitleRendering function is not been applied to the Title column of the Task list.
I suggest you replace the “Title” with “LinkTitle” in your .js file:
var overrideCtx = {
Templates: {
Fields: {
"LinkTitle": {
'View' : taskSample.TitleRendering
In IE Developer Tools, we can see that the “name” attribute of the Title column is “LinkTitle”:
Best regards
Patrick Liang
TechNet Community Support

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could type the command here... but will not do that..because you are supposed to read the docs.
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G.

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I have tables:
http://img508.imageshack.us/my.php?image=21269582oe8.jpg
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Edited by: user10731158 on 2008-12-20 11:40

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Darren,
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Ivan
Ivan Sanders <a href="http://www.linkedin.com/in/iasanders">My LinkedIn </a> , <a href="http://msmvps.com/blogs/ivansanders">My Blog</a>, <a href="http://twitter.com/iasanders"> @iasanders</a>,
<a href="http://shop.oreilly.com/product/0790145372703.do">BI in SP2013</a>, <a href="http://sharepointdemobuilds.codeplex.com">SP2013 Content Packs</a>.

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