Alter Columns Notification For Free

The ALTER TABLE statement can be used to rename a table in SQL. Here we use the ALTER TABLE keyword followed by the old name of the table followed by the RENAME TO keyword followed by the new name of the table.

So to do that go to SQL Server and within Tools select Options. Now in the options window expand Designers and under "Table and Database Designers" uncheck the check box "Prevent saving changes that require table re-creation" then click OK.

You unfortunately cannot make a change to a timestamp column, as the error implies; you are stuck with what you have. Also, each table can only have one timestamp column, so you cannot duplicate the column in any solution.

ALTER DATABASE enables you to change the overall characteristics of a database. These characteristics are stored in the data dictionary. This statement requires the ALTER privilege on the database. ALTER SCHEMA is a synonym for ALTER DATABASE .

In PostgreSQL, the ?ALTER TABLE? and ?ALTER COLUMN? commands, along with the TYPE Keyword, are used to change/modify the data type of a column. For example, integer to character, text to varchar, and so on.

The ALTER TABLE statement in SQL is used to add, remove, or modify columns in an existing table. The ALTER TABLE statement is also used to add and remove various constraints on existing tables.

Use the ADD AUDIT clause with the ALTER TABLE command to include a table in selective row-level auditing. Use the ADD CONSTRAINT clause to specify a primary key, foreign key, referential, unique, or check constraint on a new or existing column or on a set of columns.