How to alter a column in the table from front end?

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SQL-Server-2008R2

Hai Sir,

In my database I have a table with columns col1,col2,col3.

I want to give the fourth column i.e..,col4 from the front end(when I click add column button in my front end).

Now the updated table should be like col1,col2,col3,col4 after altering the fourth column.

Is it possible to alter a column from Frontend? If possible what is the stored procedure/query for that?

Thanks in Advance...

Posted 26-May-15 2:49am

Kanaparthi Sureshma Reddy

Updated 26-May-15 2:57am

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ZurdoDev 26-May-15 9:04am

It depends on what you want to do. Just google it. For example, google sql alter column and there are tons of examples.

4 solutions

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DamithSL · Answer 1 · 2015-05-26T03:04:00

Solution 1

Read SQL ALTER TABLE Statement[^] and buld the sql statement based on user inputs and excute the sql statement. How you take the inputs, build sql statement and execution depends on which programming language technologies you are using.

Posted 26-May-15 3:04am

DamithSL

OriginalGriff · Answer 2 · 2015-05-26T03:28:00

Solution 2

XML

Yes.
<pre lang="sql">ALTER TABLE MyTable
ADD newIntegerColumnName INT DEFAULT 666</pre>
It's a good idea to provide a default value if you already have existing rows.

Posted 26-May-15 3:28am

OriginalGriff

willington.d · Answer 3 · 2015-05-26T03:07:00

Solution 3

Yes you can add new column from the front end. You have to pass the sql statements

SQL

ALTER TABLE TableName ADD ColumnName DataType

Posted 26-May-15 3:07am

willington.d

Santhosh Babu Mahimairaj · Answer 4 · 2015-05-26T03:15:00

Solution 4

you can use EXEC statement for this requirement

pass your coulmn name and table name as parametr from front end ]

Run your SQl querry like this

example

SQL

EXEC ('alter table tb1 add col1 varchar(1) null')
EXEC ('update tb1 set col1 = ''Y''')

Posted 26-May-15 3:15am

Santhosh Babu Mahimairaj