我有三個日曆功能表。 說event
表有event_id
和description
等日曆數據庫查詢與重複間隔功能postgres
event_schedule
表有event_id
和event_start_date
和event_end_date
。
event_repeat
表具有event_Schedule_id
和event_start_date
和
repeats
(它可以是每週,每月,每日,每年)和repeat_every
(1,2,3這是間隔)
repeat_on
(週一,週二,星期三,etc.sometimes空白)和 其是event_schedule表starts_on
(起始日期其同一日期)和ends_never
(不斷正在進行可) end_occurences
(no_of occurence) ends_on
是結束日期, event_schedule_id
映射到事件計劃表和 repeated_by_month
是(如果每月這將有助於決定其每月的開始是一週結束) 請找表結構
CREATE TABLE events
(
event_id serial NOT NULL,
event_name text,
city text,
description text,
active_status text,
discount text,
user_id integer,
inserted_date timestamp without time zone,
modified_date timestamp without time zone,
state text,
CONSTRAINT event_pkey PRIMARY KEY (event_id),
CONSTRAINT event_user_id_fkey FOREIGN KEY (user_id)
REFERENCES users (user_id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE CASCADE
)
CREATE TABLE event_schedules
(
schedule_id serial NOT NULL,
schedule_mode text,
start_date date,
end_date date,
start_time time without time zone,
end_time time without time zone,
repeat text,
activity_id integer,
business_hours text,
modified_date timestamp without time zone,
CONSTRAINT event_schedules_pkey PRIMARY KEY (schedule_id),
CONSTRAINT event_schedules_event_id_fkey FOREIGN KEY (event_id)
REFERENCES events (event_id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE CASCADE
)
CREATE TABLE event_repeats
(
repeat_id serial NOT NULL,
repeats text,
repeat_every text,
repeat_on text,
starts_on date,
ends_never boolean,
end_occurences text,
ends_on date,
event_schedule_id integer,
modified_date timestamp without time zone,
repeated_by_month boolean,
repeat_week text,
CONSTRAINT event_repeats_pkey PRIMARY KEY (repeat_id),
CONSTRAINT event_repeats_event_schedule_id_fkey FOREIGN KEY (event_schedule_id)
REFERENCES event_schedules (schedule_id) MATCH SIMPLE
ON UPDATE NO ACTION ON DELETE CASCADE
)
請清理你的問題,並使其可讀 –
對不起,我希望我可以幫忙,但不能讀blob ... –
如果這是「與PostgreSQL」,那麼爲什麼MySQL標籤?尋找便攜式代碼? '如果是這樣,當涉及到日期操縱時,祝你好運。爲了回答這種問題,我真的希望你的表結構有一些樣例數據作爲CREATE TABLE和INSERT語句,再加上一些預期的結果。適合粘貼到http://sqlfiddle.com/進行測試/試驗的東西。 –