在MySQL中查找可用的约会时段
我需要找到符合以下要求的预约系统的可用时段：在MySQL中查找可用的约会时段,mysql,Mysql,我需要找到符合以下要求的预约系统的可用时段： 可能存在重叠预约，但不得超过指定的容量 应将时隙解析为指定的时间段，例如15分钟 可用性取决于一周中的哪一天，例如周一08:00:00-12:00:00和13:00:00-18:00:00 我需要获取指定日期/时间段内的时段，例如从2020-01-01 08:00:00到2020-02-01 18:00:00 我就是想不起来。非常感谢您的帮助 我的桌子如下所示。最后一个表是我希望从我正在寻找的查询中接收的输出 MySQL 5.6架构设置： CR
- 可能存在重叠预约，但不得超过指定的
容量 - 应将时隙解析为指定的时间段，例如15分钟
- 可用性取决于一周中的哪一天，例如周一08:00:00-12:00:00和13:00:00-18:00:00
- 我需要获取指定日期/时间段内的时段，例如从2020-01-01 08:00:00到2020-02-01 18:00:00
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
CREATE TABLE calendar (
id INT
);
INSERT INTO calendar(id) VALUES(1);
CREATE TABLE appointments (
id INT,
calendarid INT,
startdatetime DATETIME,
duration TIME
);
INSERT INTO appointments(id,calendarid,startdatetime,duration) VALUES
(1,1,"2020-01-01 09:30:00", "01:00:00"),
(2,1,"2020-01-01 10:00:00", "01:00:00"),
(3,1,"2020-01-01 14:00:00", "00:30:00"),
(4,1,"2020-01-02 08:00:00", "02:00:00"),
(5,1,"2020-01-02 13:00:00", "02:00:00");
CREATE TABLE availability(
id INT,
calendarid INT,
weekday INT, -- 1 = monday, 7 = sunday
starttime TIME,
endtime TIME,
capacity INT
);
INSERT INTO availability(id,calendarid,weekday,starttime,endtime,capacity) VALUES
(1,1,1,"08:00:00","12:00:00",2),
(2,1,1,"13:00:00","17:00:00",2),
(3,1,2,"08:00:00","12:00:00",2),
(4,1,2,"13:00:00","17:00:00",2),
(5,1,3,"08:00:00","12:00:00",2),
(6,1,3,"13:00:00","17:00:00",2),
(7,1,4,"08:00:00","12:00:00",1),
(8,1,4,"13:00:00","15:00:00",1),
(9,1,5,"08:00:00","12:00:00",2),
(10,1,5,"13:00:00","15:00:00",2);
CREATE TABLE desired_output (
slot DATETIME
);
-- 2020-01-01 => weekday = 3, capacity = 2, available 08:00:00-12:00:00 and 13:00:00-17:00:00
-- 2020-01-02 => weekday = 4, capacity = 1, available 08:00:00-12:00:00 and 13:00:00-15:00:00
INSERT INTO desired_output(slot) VALUES
("2020-01-01 08:00:00"), -- last possible because at 10:00 there is no capacity left
("2020-01-01 13:00:00"),
("2020-01-01 13:15:00"),
("2020-01-01 13:30:00"),
("2020-01-01 13:45:00"),
("2020-01-01 14:00:00"),
("2020-01-01 14:15:00"),
("2020-01-01 14:30:00"),
("2020-01-01 14:45:00"),
("2020-01-01 15:00:00"),
("2020-01-02 10:00:00");
SELECT * FROM calendar
| id |
|----|
| 1 |
SELECT * FROM appointments
| id | calendarid | startdatetime | duration |
|----|------------|----------------------|----------|
| 1 | 1 | 2020-01-01T09:30:00Z | 01:00:00 |
| 2 | 1 | 2020-01-01T10:00:00Z | 01:00:00 |
| 3 | 1 | 2020-01-01T14:00:00Z | 00:30:00 |
| 4 | 1 | 2020-01-02T08:00:00Z | 02:00:00 |
| 5 | 1 | 2020-01-02T13:00:00Z | 02:00:00 |
SELECT * FROM availability
| id | calendarid | weekday | starttime | endtime | capacity |
|----|------------|---------|-----------|----------|----------|
| 1 | 1 | 1 | 08:00:00 | 12:00:00 | 2 |
| 2 | 1 | 1 | 13:00:00 | 17:00:00 | 2 |
| 3 | 1 | 2 | 08:00:00 | 12:00:00 | 2 |
| 4 | 1 | 2 | 13:00:00 | 17:00:00 | 2 |
| 5 | 1 | 3 | 08:00:00 | 12:00:00 | 2 |
| 6 | 1 | 3 | 13:00:00 | 17:00:00 | 2 |
| 7 | 1 | 4 | 08:00:00 | 12:00:00 | 1 |
| 8 | 1 | 4 | 13:00:00 | 15:00:00 | 1 |
| 9 | 1 | 5 | 08:00:00 | 12:00:00 | 2 |
| 10 | 1 | 5 | 13:00:00 | 15:00:00 | 2 |
-- desired parameters
SET
@search_window_start = "2020-01-01 08:00:00",
@search_window_end = "2020-01-02 18:00:00",
@appointment_duration = "02:00:00",
@slot_size = "00:15:00"
SELECT * FROM desired_output
| slot |
|----------------------|
| 2020-01-01T08:00:00Z |
| 2020-01-01T13:00:00Z |
| 2020-01-01T13:15:00Z |
| 2020-01-01T13:30:00Z |
| 2020-01-01T13:45:00Z |
| 2020-01-01T14:00:00Z |
| 2020-01-01T14:15:00Z |
| 2020-01-01T14:30:00Z |
| 2020-01-01T14:45:00Z |
| 2020-01-01T15:00:00Z |
| 2020-01-02T10:00:00Z |
这是一个很好的问题，但不知怎么的，我觉得你应该在解决这个问题上多付出一点努力。无论如何，这里有一个简单的提示：如果事件a在事件B结束之前开始，在事件B开始之后结束，那么事件a与事件B重叠。你是对的。我提出了几种方法，但都是用php。它总是以一堆嵌套的foreach循环结束，这让我想到，如果这个问题可以用SQL单独解决的话。我发现最困难的是考虑到同时预约的最大数量。所以现在我想知道，这个问题的一部分是否应该用SQL查询解决，另一部分应该用php解决？你能告诉我在哪里解决哪一个问题吗？这是一个很好的问题，但不知何故，我觉得你应该在解决这个问题上多付出一点努力。无论如何，这里有一个简单的提示：如果事件a在事件B结束之前开始，在事件B开始之后结束，那么事件a与事件B重叠。你是对的。我提出了几种方法，但都是用php。它总是以一堆嵌套的foreach循环结束，这让我想到，如果这个问题可以用SQL单独解决的话。我发现最困难的是考虑到同时预约的最大数量。所以现在我想知道，这个问题的一部分是否应该用SQL查询解决，另一部分应该用php解决？你能告诉我在哪里解决哪个问题吗？