MySQL排除节假日，计算日期差

需求

计算两个日期的差，并且需要排除节假日。

首先，我们需要准备一张节假日表，存放一年里所有的周末和法定节假日。

实现下面两个需求：

1、通过主表的两个日期字段，去计算这两个字段的日期差值；

2、传入两个日期，去计算这两个日期的差值；

通过主表的两个日期字段，去计算这两个字段的日期差值

主表

DROP TABLE IF EXISTS `test`;
CREATE TABLE `test`  (`id` bigint NOT NULL AUTO_INCREMENT,`start_time` datetime NULL DEFAULT NULL,`end_time` datetime NULL DEFAULT NULL,PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci ROW_FORMAT = Dynamic;INSERT INTO `test` VALUES (1, '2021-12-01 12:50:27', '2021-12-04 12:53:38');
INSERT INTO `test` VALUES (2, '2021-12-03 08:22:11', '2021-12-06 17:54:19');
INSERT INTO `test` VALUES (3, '2022-01-01 09:54:28', '2022-01-02 19:50:31');
INSERT INTO `test` VALUES (4, '2021-12-10 13:53:34', '2021-12-25 23:50:55');
INSERT INTO `test` VALUES (5, '2022-01-10 07:20:06', '2022-01-11 22:55:13');
INSERT INTO `test` VALUES (6, '2021-12-26 16:10:17', '2021-12-28 16:55:25');
INSERT INTO `test` VALUES (7, '2021-12-27 20:55:35', '2022-01-02 17:35:43');
INSERT INTO `test` VALUES (8, '2022-01-12 21:35:49', '2022-01-16 14:22:54');

节假日表（有21年和22年的节假日）

DROP TABLE IF EXISTS `sys_holiday`;
CREATE TABLE `sys_holiday`  (`id` bigint NOT NULL AUTO_INCREMENT,`date` datetime NULL DEFAULT NULL COMMENT '日期',`name` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT '节日名称',`type` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT '节假日类型(0 工作日、1 周末、2 节日、3 调休)',`week` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci NULL DEFAULT NULL COMMENT '1 - 7，分别表示 周一 至 周日',PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_unicode_ci COMMENT = '节假日表' ROW_FORMAT = DYNAMIC;INSERT INTO `sys_holiday` VALUES (1, '2022-06-04 00:00:00', '端午节', '2', '6');
INSERT INTO `sys_holiday` VALUES (2, '2022-08-06 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (3, '2022-02-20 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (4, '2021-10-03 00:00:00', '国庆节', '2', '7');
INSERT INTO `sys_holiday` VALUES (5, '2021-09-20 00:00:00', '中秋节', '2', '1');
INSERT INTO `sys_holiday` VALUES (6, '2022-12-10 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (7, '2021-06-13 00:00:00', '端午节', '2', '7');
INSERT INTO `sys_holiday` VALUES (8, '2022-06-25 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (9, '2022-01-08 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (10, '2021-10-01 00:00:00', '国庆节', '2', '5');
INSERT INTO `sys_holiday` VALUES (11, '2022-06-18 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (12, '2022-12-04 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (13, '2022-05-28 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (14, '2021-05-16 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (15, '2021-10-02 00:00:00', '国庆节', '2', '6');
INSERT INTO `sys_holiday` VALUES (16, '2022-04-04 00:00:00', '清明节', '2', '1');
INSERT INTO `sys_holiday` VALUES (17, '2022-05-08 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (18, '2022-09-24 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (19, '2022-01-03 00:00:00', '元旦', '2', '1');
INSERT INTO `sys_holiday` VALUES (20, '2021-03-13 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (21, '2021-04-04 00:00:00', '清明节', '2', '7');
INSERT INTO `sys_holiday` VALUES (22, '2021-01-10 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (23, '2021-04-03 00:00:00', '清明节', '2', '6');
INSERT INTO `sys_holiday` VALUES (24, '2022-10-03 00:00:00', '国庆节', '2', '1');
INSERT INTO `sys_holiday` VALUES (25, '2021-01-24 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (26, '2021-02-16 00:00:00', '初五', '2', '2');
INSERT INTO `sys_holiday` VALUES (27, '2022-03-13 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (28, '2021-05-30 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (29, '2022-11-26 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (30, '2021-01-02 00:00:00', '元旦', '2', '6');
INSERT INTO `sys_holiday` VALUES (31, '2022-05-03 00:00:00', '劳动节', '2', '2');
INSERT INTO `sys_holiday` VALUES (32, '2022-05-15 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (33, '2021-02-28 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (34, '2021-08-15 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (35, '2021-04-11 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (36, '2021-07-11 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (37, '2021-01-03 00:00:00', '元旦', '2', '7');
INSERT INTO `sys_holiday` VALUES (38, '2021-08-29 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (39, '2022-05-21 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (40, '2022-11-20 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (41, '2021-03-27 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (42, '2022-01-31 00:00:00', '除夕', '2', '1');
INSERT INTO `sys_holiday` VALUES (43, '2022-07-09 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (44, '2022-02-26 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (45, '2022-11-12 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (46, '2022-06-11 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (47, '2022-12-18 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (48, '2022-09-17 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (49, '2022-08-07 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (50, '2021-08-21 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (51, '2021-06-12 00:00:00', '端午节', '2', '6');
INSERT INTO `sys_holiday` VALUES (52, '2021-01-23 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (53, '2022-04-09 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (54, '2021-11-14 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (55, '2021-09-19 00:00:00', '中秋节', '2', '7');
INSERT INTO `sys_holiday` VALUES (56, '2021-09-05 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (57, '2022-07-16 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (58, '2022-03-05 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (59, '2022-06-12 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (60, '2022-02-19 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (61, '2021-02-14 00:00:00', '初三', '2', '7');
INSERT INTO `sys_holiday` VALUES (62, '2021-01-09 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (63, '2022-10-06 00:00:00', '国庆节', '2', '4');
INSERT INTO `sys_holiday` VALUES (64, '2022-07-10 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (65, '2021-12-12 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (66, '2022-03-06 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (67, '2022-04-16 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (68, '2021-10-24 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (69, '2021-10-16 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (70, '2022-06-03 00:00:00', '端午节', '2', '5');
INSERT INTO `sys_holiday` VALUES (71, '2022-10-02 00:00:00', '国庆节', '2', '7');
INSERT INTO `sys_holiday` VALUES (72, '2021-10-06 00:00:00', '国庆节', '2', '3');
INSERT INTO `sys_holiday` VALUES (73, '2021-09-11 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (74, '2022-02-06 00:00:00', '初六', '2', '7');
INSERT INTO `sys_holiday` VALUES (75, '2021-02-13 00:00:00', '初二', '2', '6');
INSERT INTO `sys_holiday` VALUES (76, '2022-09-03 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (77, '2021-03-21 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (78, '2022-07-24 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (79, '2021-07-03 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (80, '2021-07-31 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (81, '2021-06-20 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (82, '2021-02-27 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (83, '2021-08-22 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (84, '2021-03-06 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (85, '2022-02-03 00:00:00', '初三', '2', '4');
INSERT INTO `sys_holiday` VALUES (86, '2022-04-30 00:00:00', '劳动节', '2', '6');
INSERT INTO `sys_holiday` VALUES (87, '2021-06-19 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (88, '2021-07-25 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (89, '2022-12-25 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (90, '2021-12-18 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (91, '2022-11-27 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (92, '2022-04-17 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (93, '2021-05-01 00:00:00', '劳动节', '2', '6');
INSERT INTO `sys_holiday` VALUES (94, '2022-04-23 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (95, '2022-10-15 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (96, '2022-01-02 00:00:00', '元旦', '2', '7');
INSERT INTO `sys_holiday` VALUES (97, '2021-12-05 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (98, '2021-07-04 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (99, '2022-09-25 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (100, '2022-03-12 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (101, '2021-09-21 00:00:00', '中秋节', '2', '2');
INSERT INTO `sys_holiday` VALUES (102, '2021-09-25 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (103, '2022-06-19 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (104, '2022-12-24 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (105, '2022-01-09 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (106, '2022-10-16 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (107, '2021-02-12 00:00:00', '初一', '2', '5');
INSERT INTO `sys_holiday` VALUES (108, '2022-07-31 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (109, '2022-08-21 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (110, '2021-05-02 00:00:00', '劳动节', '2', '7');
INSERT INTO `sys_holiday` VALUES (111, '2022-07-17 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (112, '2021-08-08 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (113, '2022-01-01 00:00:00', '元旦', '2', '6');
INSERT INTO `sys_holiday` VALUES (114, '2021-11-28 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (115, '2021-07-24 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (116, '2022-01-22 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (117, '2021-11-13 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (118, '2021-06-14 00:00:00', '端午节', '2', '1');
INSERT INTO `sys_holiday` VALUES (119, '2021-10-04 00:00:00', '国庆节', '2', '1');
INSERT INTO `sys_holiday` VALUES (120, '2022-12-17 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (121, '2021-03-20 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (122, '2022-12-31 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (123, '2021-11-27 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (124, '2021-07-17 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (125, '2022-02-27 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (126, '2021-04-17 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (127, '2021-11-06 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (128, '2021-10-05 00:00:00', '国庆节', '2', '2');
INSERT INTO `sys_holiday` VALUES (129, '2021-10-30 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (130, '2022-11-19 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (131, '2021-03-14 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (132, '2021-04-10 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (133, '2022-09-18 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (134, '2021-02-17 00:00:00', '初六', '2', '3');
INSERT INTO `sys_holiday` VALUES (135, '2021-06-05 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (136, '2021-05-04 00:00:00', '劳动节', '2', '2');
INSERT INTO `sys_holiday` VALUES (137, '2022-05-14 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (138, '2022-05-04 00:00:00', '劳动节', '2', '3');
INSERT INTO `sys_holiday` VALUES (139, '2022-02-13 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (140, '2022-12-03 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (141, '2021-06-27 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (142, '2021-10-23 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (143, '2022-11-13 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (144, '2021-05-29 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (145, '2022-08-13 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (146, '2022-11-06 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (147, '2022-05-02 00:00:00', '劳动节', '2', '1');
INSERT INTO `sys_holiday` VALUES (148, '2021-04-18 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (149, '2021-05-23 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (150, '2021-01-01 00:00:00', '元旦', '2', '5');
INSERT INTO `sys_holiday` VALUES (151, '2022-12-11 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (152, '2021-02-21 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (153, '2021-05-09 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (154, '2022-03-20 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (155, '2022-03-26 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (156, '2022-05-22 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (157, '2021-06-06 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (158, '2022-10-23 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (159, '2022-10-29 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (160, '2021-02-06 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (161, '2022-07-02 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (162, '2022-10-04 00:00:00', '国庆节', '2', '2');
INSERT INTO `sys_holiday` VALUES (163, '2021-08-14 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (164, '2022-04-03 00:00:00', '清明节', '2', '7');
INSERT INTO `sys_holiday` VALUES (165, '2022-03-19 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (166, '2021-11-07 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (167, '2022-04-10 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (168, '2022-10-22 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (169, '2021-08-01 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (170, '2021-11-20 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (171, '2021-03-28 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (172, '2022-09-11 00:00:00', '中秋节', '2', '7');
INSERT INTO `sys_holiday` VALUES (173, '2021-01-16 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (174, '2022-07-23 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (175, '2021-12-04 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (176, '2022-07-30 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (177, '2021-07-10 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (178, '2022-02-12 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (179, '2021-08-28 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (180, '2021-08-07 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (181, '2021-12-11 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (182, '2021-05-03 00:00:00', '劳动节', '2', '1');
INSERT INTO `sys_holiday` VALUES (183, '2021-10-10 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (184, '2021-01-31 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (185, '2022-02-05 00:00:00', '初五', '2', '6');
INSERT INTO `sys_holiday` VALUES (186, '2021-10-17 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (187, '2022-06-26 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (188, '2022-09-04 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (189, '2022-01-16 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (190, '2022-03-27 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (191, '2022-02-04 00:00:00', '初四', '2', '5');
INSERT INTO `sys_holiday` VALUES (192, '2021-05-15 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (193, '2022-07-03 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (194, '2021-05-22 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (195, '2021-07-18 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (196, '2021-04-24 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (197, '2021-12-19 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (198, '2021-03-07 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (199, '2021-06-26 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (200, '2021-02-11 00:00:00', '除夕', '2', '4');
INSERT INTO `sys_holiday` VALUES (201, '2021-12-26 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (202, '2022-10-05 00:00:00', '国庆节', '2', '3');
INSERT INTO `sys_holiday` VALUES (203, '2022-09-12 00:00:00', '中秋节', '2', '1');
INSERT INTO `sys_holiday` VALUES (204, '2022-10-01 00:00:00', '国庆节', '2', '6');
INSERT INTO `sys_holiday` VALUES (205, '2022-10-07 00:00:00', '国庆节', '2', '5');
INSERT INTO `sys_holiday` VALUES (206, '2022-06-05 00:00:00', '端午节', '2', '7');
INSERT INTO `sys_holiday` VALUES (207, '2022-04-05 00:00:00', '清明节', '2', '2');
INSERT INTO `sys_holiday` VALUES (208, '2022-08-20 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (209, '2022-02-02 00:00:00', '初二', '2', '3');
INSERT INTO `sys_holiday` VALUES (210, '2022-09-10 00:00:00', '中秋节', '2', '6');
INSERT INTO `sys_holiday` VALUES (211, '2021-10-07 00:00:00', '国庆节', '2', '4');
INSERT INTO `sys_holiday` VALUES (212, '2021-09-12 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (213, '2021-11-21 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (214, '2022-01-23 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (215, '2021-04-05 00:00:00', '清明节', '2', '1');
INSERT INTO `sys_holiday` VALUES (216, '2021-01-30 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (217, '2022-11-05 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (218, '2022-08-27 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (219, '2021-09-04 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (220, '2021-10-31 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (221, '2021-12-25 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (222, '2022-05-29 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (223, '2022-02-01 00:00:00', '初一', '2', '2');
INSERT INTO `sys_holiday` VALUES (224, '2022-08-14 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (225, '2022-01-15 00:00:00', '周六', '1', '6');
INSERT INTO `sys_holiday` VALUES (226, '2021-05-05 00:00:00', '劳动节', '2', '3');
INSERT INTO `sys_holiday` VALUES (227, '2022-05-01 00:00:00', '劳动节', '2', '7');
INSERT INTO `sys_holiday` VALUES (228, '2022-10-30 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (229, '2021-01-17 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (230, '2022-08-28 00:00:00', '周日', '1', '7');
INSERT INTO `sys_holiday` VALUES (231, '2021-02-15 00:00:00', '初四', '2', '1');

排除节假日，计算日期差

SELECT id,start_time,end_time,secondcount,
CONCAT(FLOOR(secondcount/(3600*24)), '天', FLOOR(secondcount%(3600*24)/3600), '时', FLOOR((secondcount%3600)/60), '分', FLOOR(secondcount%3600%60), '秒') workTime
FROM(SELECT t.id,start_time,end_time,(TIMESTAMPDIFF(SECOND,start_time,end_time) - (select count(*) from sys_holiday where date < end_time and date >= start_time) * 24 * 60 * 60) - TIMESTAMPDIFF(SECOND, start_time, IFNULL(DATE_ADD(a.date,INTERVAL 1 DAY), start_time)) + TIMESTAMPDIFF(SECOND, end_time, IFNULL(DATE_ADD(b.date,INTERVAL 1 DAY), end_time)) as secondcount FROM test tLEFT JOIN sys_holiday a on date(start_time) = a.dateLEFT JOIN sys_holiday b on date(end_time) = b.date
) z

SQL解释

SELECT id,start_time,end_time,secondcount,
CONCAT(FLOOR(secondcount/(3600*24)), '天', FLOOR(secondcount%(3600*24)/3600), '时', FLOOR((secondcount%3600)/60), '分', FLOOR(secondcount%3600%60), '秒') workTime
FROM(-- 结果 = 用总时间差 - 节假日的天数 -（开始时间是假期）开始时间到第二天0点的差值 + （结束时间是假期）结束时间到第二天0点的差值SELECT t.id,start_time,end_time,(-- 这里是计算开始时间和结束时间之间的总时间差TIMESTAMPDIFF(SECOND,start_time,end_time)-- 这里是获取开始时间和结束时间之间的节假日的天数，再将天数直接转成秒数- (select count(*) from sys_holiday where date < end_time and date >= start_time) * 24 * 60 * 60) -- 如果开始时间这天是假期的话，计算它的时间和第二天0点之间的差值- TIMESTAMPDIFF(SECOND, start_time, IFNULL(DATE_ADD(a.date,INTERVAL 1 DAY), start_time)) -- 如果结束时间这天是假期的话，计算它的时间和第二天0点之间的差值+ TIMESTAMPDIFF(SECOND, end_time, IFNULL(DATE_ADD(b.date,INTERVAL 1 DAY), end_time)) as secondcount FROM test tLEFT JOIN sys_holiday a on date(start_time) = a.date -- start_time格式到天和节假日表关联，如果 a.date 不是null，说明start_time这一天是节假日LEFT JOIN sys_holiday b on date(end_time) = b.date  -- end_time格式到天和节假日表关联，如果 b.date 不是null，说明end_time这一天是节假日) z为什么开始时间是假期就要减去，而结束时间是假期就要加上呢？
(select count(*) from sys_holiday where date < end_time and date >= start_time) 这一句就是查询 (开始时间 <= date < 结束时间) 这个范围的天数。因为每个假期都是从这一天的0点开始的，而 (开始时间 <= date) 这个条件是查不到开始时间当天的，所以需要单独减去。比如开始时间是2022-11-12 12:10:11，结束时间是2022-11-13 12:10:11，这两天都是周六日，但这句查询查的天数只有一天，就是13号这天；
因此，开始时间是假期的话，它后面的时间一直到第二天0点，都需要减去；
而结束时间是假期的话，它后面的时间一直到第二天0点，是不算在节假日里面的（因为后面的时间不在开始和结束时间这个范围），前面是算的13号这一整天的秒数，实际上12:10:11以后的时间，是不在区间范围的，所以要把这个非范围内的秒数给重新加上去。

这整句计算的SQL大概是这么个意思，不理解的可以把我标注的1、2、3这几句单独拿出来查询一遍看看，再照着我的解释理一遍。

执行结果

校验

SELECT TIMESTAMPDIFF(SECOND,'2021-12-01 12:50:27','2021-12-04 00:00:00') id1, -- 212973TIMESTAMPDIFF(SECOND,'2021-12-03 08:22:11','2021-12-04 00:00:00')+TIMESTAMPDIFF(SECOND,'2021-12-06 00:00:00','2021-12-06 17:54:19') id2, -- 120728TIMESTAMPDIFF(SECOND,'2022-01-10 07:20:06','2022-01-11 22:55:13') id5, -- 142507TIMESTAMPDIFF(SECOND,'2021-12-27 00:00:00','2021-12-28 16:55:25') id6  -- 147325

传入两个日期作为参数，计算它们的差值；

set @startTime='2022-11-10 10:11:23';
set @endTime='2022-11-13 14:11:23';SELECT *,总时差 - 节假日的秒数 - 开始时间的差值 + 结束时间的差值 AS 结果
FROM(SELECT TIMESTAMPDIFF(SECOND,@startTime,@endTime) 总时差,(select count(*) from sys_holiday where date < @endTime and date >= @startTime) * 24 * 60 * 60 AS 节假日的秒数,CASE WHEN date(@startTime)=(SELECT date FROM sys_holiday WHERE date(@startTime)=date) THEN TIMESTAMPDIFF(SECOND, @startTime, DATE_ADD(date(@startTime),INTERVAL 1 DAY)) ELSE 0 END  开始时间的差值,CASE WHEN date(@endTime)=(SELECT date FROM sys_holiday WHERE date(@endTime)=date) THEN TIMESTAMPDIFF(SECOND, @endTime, DATE_ADD(date(@endTime),INTERVAL 1 DAY)) ELSE 0 END  结束时间的差值
) a

@startTime、@endTime就是传进来的开始、结束时间，用这两个时间在 sys_holiday 节假日表直接按条件查询即可。总时差、节假日的秒数、开始时间的差值、结束时间的差值 这四个值的计算方式和前面的一样，就是把前面的那个查询语句拆开来了而已，它们的意思也是和我上面解释的一样。

最后

如果数据多了，查询会比较慢

暂时想不出要怎么优化，又或者有什么其他方法来排除节假日。有小伙伴知道的话欢迎留言~

MySQL排除节假日，计算日期差相关推荐

MYSQL计算日期差和时间差的函数
DATEDIFF:只计算日期差,精确到天数. 用法:DATEDIFF('2015-04-22 23:59:00', '2015-04-20 00:00:00') TIMESTAMPDIFF:可以计算日 ...
php 校准系统时间,php计算日期差-在线时间校准网
您的位置:在线时间校准网 >> 有关时间的问题 >> php计算日期差 php计算日期差-在线时间校准网php计算日期差_IT/计算机_专业资料.php日期函数用法,php计算 ...
(C++)设计一个程序能计算一个日期加上若干天后是什么日期and计算日期差值
输入第一行表示样例个数m,接下来m行每行四个整数分别表示年月日和累加的天数. 输出m行,每行按yyyy-mm-dd的个数输出. #include<cstdio>//判断是否是闰年 bool ...
计算日期差的方法c语言,C语言计算日期差的方法示例
本文实例讲述了C语言计算日期差的方法.分享给大家供大家参考,具体如下: 历史上,不同的人类聚居地可能有不同的历法,因而记录下来的资料中日期的换算就很麻烦.幸好今天我们统一使用公元纪年法.当然,这种历法 ...
javascript 日期计算器推算几天后的日期计算日期差
<html> <head> <meta http-equiv="Content-Type" content="text/html; char ...
SHELL脚本下获取文件时间转换时间戳，使用时间戳计算日期差
SHELL脚本下获取文件时间使用时间戳计算日期差获取时间戳按秒计算获取 LINUX获取当前时间的时间戳获取文件的时间戳计算获取时间戳按秒计算获取 LINUX获取当前时间的时间戳 #确认时间 ...
lua 计算日期差值计算时间戳日期差
lua 计算日期差值背景:最近接触的项目在用lua所以也来发一个可能其他朋友需要的function 不废话 ,上代码,需要的小伙伴拿去吧,如果还有小伙伴有更好的方案可以. 此方案也是从网络上搜到的 ...
SVG排版公众号图文『实时计算日期差』模板代码
模板效果 SVG排版公众号图文『实时计算日期差』模版代码模板代码 svg代码 <svg data-author="懂点君" version="1.1" ...
android中计算日期差,Android编程实现根据不同日期计算天数差的方法
本文实例讲述了Android编程实现根据不同日期计算天数差的方法.分享给大家供大家参考,具体如下: Calendar cal1 = getCalendarFromDate(mStartDate); l ...