我有一個名爲Run的父表,它具有作爲子外鍵的移位,並且這些移位在其表中有描述。我需要選擇查詢中的子班次描述,並訪問該班次的說明以與另一班次進行比較。這可以在MYSQL中完成
這裏的表說明: 運行
+----------------------+--------------+------+-----+-------------------+-----------------------------+
| Field | Type | Null | Key | Default | Extra |
+----------------------+--------------+------+-----+-------------------+-----------------------------+
| RunId | int(11) | NO | PRI | NULL | auto_increment |
| RunType | varchar(1) | YES | | NULL | |
| Plant | varchar(2) | NO | MUL | NULL | |
| Warehouse | varchar(20) | YES | | NULL | |
| LegacyId | int(11) | YES | | NULL | |
| RunDate | date | NO | | NULL | |
| Shift | varchar(20) | NO | | NULL | |
| NumEmployees | int(11) | YES | | NULL | |
| DryersRan | tinyint(1) | YES | | NULL | |
| HogfuelDelivered | int(11) | YES | | NULL | |
| ScheduledStart | datetime | YES | | NULL | |
| ScheduledEnd | datetime | YES | | NULL | |
| ScheduledHours | decimal(4,2) | YES | | NULL | |
| Downtime | int(11) | YES | | NULL | |
| ProductLength | varchar(10) | YES | | NULL | |
| ProductWidth | varchar(10) | YES | | NULL | |
| ProductThickness | varchar(10) | YES | | NULL | |
| Species | varchar(10) | YES | MUL | NULL | |
| NumBlocks | int(11) | YES | | NULL | |
| TestRun | tinyint(1) | YES | | NULL | |
| AveDiameter | decimal(5,2) | YES | | NULL | |
| BlockScale | int(11) | YES | | NULL | |
| LogScale | int(11) | YES | | NULL | |
| NumSpinouts | int(11) | YES | | NULL | |
| Pieces | int(11) | YES | | NULL | |
| Footage | int(11) | YES | | NULL | |
| Surface | int(11) | YES | | NULL | |
| Coreline | int(11) | YES | | NULL | |
| Dryer1 | int(11) | YES | | NULL | |
| Dryer2 | int(11) | YES | | NULL | |
| Dryer3 | int(11) | YES | | NULL | |
| Sander | int(11) | YES | | NULL | |
| Redry | int(11) | YES | | NULL | |
| GradeStamped | tinyint(1) | YES | | NULL | |
| Status | varchar(10) | YES | | NULL | |
| Notes | text | YES | | NULL | |
| InventoryTransaction | int(11) | YES | | NULL | |
| LastEdited | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
| LastEditedBy | varchar(20) | YES | | NULL | |
| LegacyRun | int(11) | YES | | NULL | |
| WorkCenter | varchar(20) | YES | MUL | NULL | |
+----------------------+--------------+------+-----+-------------------+-----------------------------+
RunItem:
+--------------+-------------+------+-----+-------------------+-----------------------------+
| Field | Type | Null | Key | Default | Extra |
+--------------+-------------+------+-----+-------------------+-----------------------------+
| ItemId | int(11) | NO | PRI | NULL | auto_increment |
| ItemType | varchar(2) | NO | | NULL | |
| Run | int(11) | YES | MUL | NULL | |
| LegacyRun | int(11) | YES | | NULL | |
| WorkCenter | varchar(20) | YES | | NULL | |
| Product | int(11) | YES | MUL | NULL | |
| DayProduced | date | YES | | NULL | |
| Source | varchar(20) | YES | | NULL | |
| SourceShift | varchar(20) | YES | | NULL | |
| PieceCount | int(11) | YES | | NULL | |
| Surface | int(11) | YES | | NULL | |
| Coreline | int(11) | YES | | NULL | |
| Footage | int(11) | YES | | NULL | |
| LastEdited | timestamp | NO | | CURRENT_TIMESTAMP | on update CURRENT_TIMESTAMP |
| LastEditedBy | varchar(20) | YES | | NULL | |
| Bundle | int(11) | YES | MUL | NULL | |
+--------------+-------------+------+-----+-------------------+-----------------------------+
這是我到目前爲止已經試過查詢,它不會讓我做(i.Shift ISS ) 如何才能做到這一點?
update RunItem i, Run r, i.Shift iss, r.Shift rs
set i.ItemId = (SELECT RunId from Run r where r.LegacyRun = i.LegacyRun and
rs.Description
= is.Description
and r.WorkCenter != i.WorkCenter;
給出了這樣的錯誤:
ERROR 1146 (42S02): Table 'i.Shift' doesn't exist
UPDATE:
select r.RunId, i.Run, r.WorkCenter as runWork, i.WorkCenter as itemWork,
r.Footage, i.LegacyRun as itemLegacy from Run r, RunItem i where r.RunId = i.Run
and r.WorkCenter != i.WorkCenter and RunDate >= '2016-02-01' and RunDate <= '2016-02-29';
| 39550 | 39550 | P3-LAYUP | P3-SPREADER | 260818 | 21280 |
| 39553 | 39553 | P3-LAYUP | P3-SPREADER | 267421 | 21281 |
| 39566 | 39566 | P3-8FTSAWLINE | P3-SPREADER | 351547 | 21286 |
| 39569 | 39569 | P3-8FTSAWLINE | P3-SPREADER | 527049 | 21287 |
| 39605 | 39605 | P3-8FTSAWLINE | P3-SPREADER | 460826 | 21316 |
| 39605 | 39605 | P3-8FTSAWLINE | P3-SPREADER | 460826 | 21316 |
| 39605 | 39605 | P3-8FTSAWLINE | P3-SPREADER | 460826 | 21316 |
| 39608 | 39608 | P3-8FTSAWLINE | P3-SPREADER | 458272 | 21317 |
| 39625 | 39625 | P3-8FTSAWLINE | P3-SPREADER | 503324 | 21327 |
| 39628 | 39628 | P3-LAYUP | P3-SPREADER | 339615 | 21328 |
| 39628 | 39628 | P3-LAYUP | P3-SPREADER | 339615 | 21328 |
+-------+-------+---------------+-------------+---------+------------+
select RunId, WorkCenter, Shift,
LegacyRun from Run where Footage is null
and RunDate >='2016-02-01' and RunDate <='2016-02-29';
| 39552 | P3-SPREADER | P3-DAY-SPREAD | 21280 |
| 39555 | P3-SPREADER | P3-SWING-SPREAD | 21281 |
| 39568 | P3-SPREADER | P3-DAY-SPREAD | 21286 |
| 39571 | P3-SPREADER | P3-SWING-SPREAD | 21287 |
| 39607 | P3-SPREADER | P3-DAY-SPREAD | 21316 |
| 39609 | P3-SPREADER | P3-SWING-SPREAD | 21317 |
| 39626 | P3-SPREADER | P3-DAY-SPREAD | 21327 |
| 39629 | P3-SPREADER | P3-SWING-SPREAD | 21328 |
| 39647 | P3-8FTSAWLINE | P3-DAY-SL | 21339 |
| 39649 | P3-8FTSAWLINE | P3-SWING-SL | 21340 |
+-------+---------------+-----------------+-----------+
在上表中,我選擇在RunItem工作中心和運行工作中心不匹配的運行,這告訴我,根據該運行 一些RunItems指向錯誤的運行。下面的表格是運行時鏡頭值爲零的表格,這意味着它們沒有指向它們的runItem。 所以我需要的是,當RunItem WorkCenter和Run WorkCenter不匹配時,抓住LegacyRun(RunId)和Legacy RunShift,指出WorkCenters不匹配的所有RunItem與運行 具有相同的LegacyRun(Id )和相同的Shift.Description和LegacyRun。
UPDATE_2: 讓我們首先從頂級表
| 39550 | 39550 | P3-LAYUP | P3-SPREADER | 260818 | 21280 |
公告稱,legacyRun(ID)是21280 它只是happends的底表的頂部行也有21280的LegacyRun
如果我們從RunItem中選擇ItemId,WorkCenter,其中Run = 39550(從runItem工作中心不運算數學運行的頂部表中運行); 我們得到:
+--------+-------------+
| ItemId | WorkCenter |
+--------+-------------+
| 110336 | P3-LAYUP |
| 110344 | P3-SPREADER |
+--------+-------------+
我們知道我們有指向與吊具的工作中心,以不具有指向它runItems底部的表的第一行runItem。
所以要解決這個問題一個行,我們做的:
update RunItem set Run = 39552 where ItemId = 110344;
我可以繼續通過手動做到這一點,但我想要的東西,可以更新所有行
'UPDATE'子句只是列出表,列放在'SET'子句中。 – Barmar
您在'JOIN'的'ON'子句中使用外鍵時,您不會在'UPDATE'子句中列出它們。 – Barmar
你是什麼意思?@Barmar –