Need help inputing data to a column

[KansasAU]

I have an existing table with about 50k records. I have had to add a new column and need to add a 0 to every record in this column.

How is this done?

 

[RichMorrison]

Create an "Update" query.

Drag the new column name to the grid.
Put zero in the "update to" cell.

Run the query.

RichM