user
22 lines
456 B
SQL
Executable File
22 lines
456 B
SQL
Executable File
CREATE TRIGGER IF NOT EXISTS CHK_Bookings_Insert BEFORE INSERT ON Bookings BEGIN
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SELECT
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RAISE (
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FAIL,
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"Reservation of table is not possible due to the existing reservation"
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)
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FROM
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(
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SELECT
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datetime (NEW.reservation) AS new_res_dt,
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datetime (reservation) AS res_dt,
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datetime (reservation, time_reserve) AS reserved_until
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FROM
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Bookings
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)
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WHERE
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new_res_dt >= res_dt
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OR new_res_dt < reserved_until;
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--
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END;
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