How to return a default value when no rows are returned from the select statement

Question

I have a select statement that returns two columns, a date column, and a count(value) column. When the count(value) column doesn\'t have any records,

Answer 1

I agree that a Dates table (AKA time dimension) is the right solution, but there is a simpler option:

SELECT
    CONVERT(VARCHAR(25), DateTime, 101) AS RecordDate,
    SUM(CASE WHEN Value < 700 THEN 1 ELSE 0 END) AS RecordCount
FROM
    History
GROUP BY
    CONVERT(VARCHAR(25), DateTime, 101)