SELECT
location.*, 1 as set_hours
FROM
location
WHERE
EXISTS
(
SELECT
*
FROM
hours
WHERE
location.location_id = hours.hours_locationid
)
UNION
SELECT
location.*, 0 as set_hours
FROM
location
WHERE
NOT EXISTS
(
SELECT
*
FROM
hours
WHERE
location.location_id = hours.hours_locationid
)
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