having to do with machinery: a mechanical failure. 2. being a machine; operated by machinery: a mechanical toy. 3. caused by or derived from machinery: mechanical propulsion.
ERROR: cannot alter type of a column used by a view or rule DETAIL: rule _RETURN on view v_change_me depends on column too_short. Though PostgreSQL tells us which view and column prompted this error, thatâs the last favor it provides.
The Columns tab is used to display and edit all the column information for a table. Using this tab, you can add, drop, and alter columns. You can also use the column tab to change the name, data type, default value, and other properties of your table's columns. Figure 7.9. The Columns Tab. To add a column simply click the Column Name field in an empty row and enter an appropriate value. Select a data type from the Datatype drop down list box.