Write a query to display the number of electricity_reading in which the total_units per day is greater than 500. Give an alias name as 'count_total_units_500'.
Question
Write a query to display the number of electricity_reading in which the total_units per day is greater than 500.
Give an alias name as count_total_units_500.
Solution
Sure, here is the SQL query you asked for:
SELECT COUNT(*) AS count_total_units_500
FROM electricity_reading
WHERE total_units > 500;
This query works as follows:
-
SELECT COUNT(*) AS count_total_units_500: This part of the query is used to count the number of rows in the result set and give it an alias name 'count_total_units_500'. -
FROM electricity_reading: This part of the query specifies the table from which to retrieve the data. -
WHERE total_units > 500: This is the condition that filters the data. It only selects the rows where the total_units per day is greater than 500.
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