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Updating a Record Using SQL

 

Description

To edit a value using SQL, you start with the UPDATE keyword and follow this formula:

UPDATE TableName
SET ColumnName = NewValue

The TableName is the name of the table where the update will be made.

The ColumnName is the one that will receive change. The column mu be a valid column in the TableName table.

The NewValue factor is the value that will replace the old one.

If you use this formula, all records of the ColumnName would be given the NewValue.

Here is an example:

UPDATE 	Videos
SET 	Rating = "PG-13"

If you want to change a particular record, the formula to use is:

UPDATE TableName
SET ColumnName = NewValue
WHERE Condition

The Condition specifies how the value will be located.

Here is an example:

UPDATE 	Videos
SET 	Director = "Peter Segal"
WHERE 	ShelfNumber = "CM-8842"

This can be done in code as follows:

Private Sub cmdMaintenance_Click()
    Dim strDataUpdate As String
    
    strDataUpdate = "UPDATE Videos " & _
                    "SET Director = 'Peter Segal' " & _
                    "WHERE ShelfNumber = 'CM-8842';"
    
    DoCmd.RunSQL strDataUpdate
End Sub
 
 
   
 

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