表结构
CREATE TABLE `transfer_order_detail` (
`tdId` int(9) unsigned NOT NULL AUTO_INCREMENT,
`barCode` varchar(9) NOT NULL,
`toTime` datetime DEFAULT NULL,
PRIMARY KEY (`tdId`)
)…
例子数据:
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000001 | R00100001 | 2016-04-01 15:02:35 |
| 000000002 | R00100002 | 2016-04-01 15:02:35 |
| 000000003 | R00100003 | 2016-04-01 15:02:35 |
| 000000008 | R00100001 | 2016-04-01 15:05:39 |
| 000000009 | R00100002 | 2016-04-01 15:05:39 |
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
| 000000014 | R00100001 | 2016-04-03 16:49:43 |
| 000000015 | R00100002 | 2016-04-03 16:49:43 |
+–+–+–+
要求以barCode分组查出每组中toTime最大的记录小于指定日期的记录.
例:小于2016-04-04 16:49:43
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
| 000000014 | R00100001 | 2016-04-03 16:49:43 |
| 000000015 | R00100002 | 2016-04-03 16:49:43 |
+–+–+–+
小于2016-04-01 16:49:43
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
+–+–+–+
CREATE TABLE `transfer_order_detail` (
`tdId` int(9) unsigned NOT NULL AUTO_INCREMENT,
`barCode` varchar(9) NOT NULL,
`toTime` datetime DEFAULT NULL,
PRIMARY KEY (`tdId`)
)…
例子数据:
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000001 | R00100001 | 2016-04-01 15:02:35 |
| 000000002 | R00100002 | 2016-04-01 15:02:35 |
| 000000003 | R00100003 | 2016-04-01 15:02:35 |
| 000000008 | R00100001 | 2016-04-01 15:05:39 |
| 000000009 | R00100002 | 2016-04-01 15:05:39 |
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
| 000000014 | R00100001 | 2016-04-03 16:49:43 |
| 000000015 | R00100002 | 2016-04-03 16:49:43 |
+–+–+–+
要求以barCode分组查出每组中toTime最大的记录小于指定日期的记录.
例:小于2016-04-04 16:49:43
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
| 000000014 | R00100001 | 2016-04-03 16:49:43 |
| 000000015 | R00100002 | 2016-04-03 16:49:43 |
+–+–+–+
小于2016-04-01 16:49:43
+–+–+–+
| tdId | barCode | toTime |
+–+–+–+
| 000000010 | R00100003 | 2016-04-01 15:05:39 |
+–+–+–+
解决方案
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