You can specify a specific string or number as a default value, as long as the column has a string or numeric data type. You must ensure that the default specified can be converted to the column's data type.
Default strings and numbers are useful when there is a typical entry for a given column. For example, if an organization has two offices, the headquarters in city_1 and a small office in city_2, you may want to set a default entry for a location column to city_1, to make data entry easier.
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