Alter Columns Notice For Free

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.

Be aware that altering an existing table's structure may cause you to lose some of the data. For example, changing a field's data type can result in data loss or rounding errors, depending on the data types you are using. It can also break other parts of your application that may refer to the changed field.

In order to find out who update the table, you could try with below options: Try and read the Transaction Logs to see what happened. Start trace in SQL Server profiler and checked events(TSQL-SQL:BatchCompleted,SQL:BatchStarting,SQL:StmtCompleted and SQL:StmtStarting)(Recommended).

SQL Server provides two features that track changes to data in a database: change data capture and change tracking. These features enable applications to determine the DML changes (insert, update, and delete operations) that were made to user tables in a database.

Right click on the table you want to track changes. Click Properties, click Change Tracking, then in the right pane set Change Tracking to TRUE.

You can use the OBJECTPROPERTY() function in SQL Server to check whether or not a table has a timestamp column. To do this, pass the table's object ID as the first argument, and TableHasTimestamp as the second argument. The function returns a 1 or a 0 depending on whether or not it has a timestamp column.

Using a SQL Server trigger to check if a column is updated, there are two ways this can be done; one is to use the function update(<col name>) and the other is to use columns_updated().

To modify data involves changing the contents of tables.Modify data in your database.Delete rows.Insert rows.Update rows.Privileges on a database and on its objects.Data integrity.Interrupted modifications.Backups and logs with IBM Informix database servers.More items...

Move Columns in ExcelSelect the column (or contiguous columns) that you want to move.Hold the Shift Key from your keyboard.Move your cursor to the edge of the selection.Click on the edge (with left mouse button) while still holding the shift key.Move it to the column where you want this row to be shifted.More items...

You can move a single column or a contiguous group of columns.Select the column that you want to move. To select more than one column, drag the pointer until you have selected the columns that you want.Do one of the following: In Datasheet view, drag the selected columns horizontally to the position that you want.