How to read from the two same dates without input the time

I have a query like below.

SELECT
occupation AS 'Contact occupation',
sum(total) AS 'Quantity'
FROM
(
SELECT
CASE
WHEN contacts.occupation IS NULL THEN 'Other'
WHEN trim(contacts.occupation) = '' THEN 'Other'
ELSE contacts.occupation
END AS occupation, count(DISTINCT(concat(patients.id, '-', individual_appointments.practitioner_id))) AS total
FROM
individual_appointments
JOIN patients ON
patients.id = individual_appointments.patient_id
JOIN practitioners ON
practitioners.id = individual_appointments.practitioner_id
JOIN businesses ON
businesses.id = individual_appointments.business_id
JOIN referral_sources ON
referral_sources.patient_id = individual_appointments.patient_id
JOIN referral_source_types ON
referral_source_types.id = referral_sources.referral_source_type_id
LEFT JOIN contacts ON
referral_sources.referring_contact_id = contacts.id
WHERE
patients.created_at BETWEEN '2018-05-22' AND '2018-05-22'
AND CONVERT(NVARCHAR(100), referral_source_types.name) = 'Contact' [[
AND {{practitioner}}]] [[
AND {{clinic}}]]
AND isnull(individual_appointments.cancelled_at, '') = ''
AND individual_appointments.did_not_arrive <> 1
GROUP BY
contacts.occupation ) marketing_referrers
GROUP BY
occupation,
marketing_referrers.total
ORDER BY
total DESC;

When I submit a date like the following patients.created_at BETWEEN '2018-05-22' AND '2018-05-22' it doesn’t return anything but if I enter BETWEEN '2018-05-22' patients.created_at 'AND' 2018-05-23' it returns a value.

I think if I just input two of the same date without entering the time then the time will be 00:00:00 - 00:00:00.

How to read 00:00:00 - 23:59:59 when we input two of the same date without entering the time?

The date format in the table is filled as follows "Thursday, August 20, 2020, 9:49 AM" but it can be read if we just input the date, for example 2020-08-20.

Your help means a lot to me, thank you

Answer

if your data type is datetime then you can add:

WHERE patients.createdAt >= '2018-05-22' and patients.createdAt < '2018-05-23'

because 2018-05-22 = 2018-05-22 00:00:00

if you want to input only one date, then u can use this

 WHERE patients.createdAt >= '2018-05-22 00:00:00'
       AND patients.createdAt <= '2018-05-22 23:59:59'

or you can simply use this

 WHERE patients.createdAt LIKE '2018-05-22%'

it will give you all of the row which has the value ‘2018-05-22’ on it