How do I drop a table column in SQL Server 2012? [closed]

问题

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Closed 7 years ago.

I wish to drop a table column in SQL Server 2012, without affecting other columns in the table (and their data).

How can I do this? Is it possible at all?

So far I've tried deleting the column via SQL Server Management Studio, but this says the whole table must be dropped and re-created.

回答1:

From MSDN

ALTER TABLE dbo.Table DROP COLUMN column_b

回答2:

ALTER TABLE table_name
DROP COLUMN column_name

回答3:

To drop column

alter table tblname drop column colname

To add column

alter table tblname add colname datatype

来源：https://stackoverflow.com/questions/13491554/how-do-i-drop-a-table-column-in-sql-server-2012