我在查询 2 个表并更改这 2 个表上的数据时遇到困难。
这就是我想做的。
获取表B“最大数量”-表A(“实际数量”-“在制品数量”)=表B“充值数量”
然后将“Signal”值更改为 NULL 或基于 ((“实际数量” - “WIP 数量”)/“最大数量”) x 100% 的 1-4 图例
图例
NULL = 大于或等于 60%
1 = 小于或等于 60%
2 = 小于或等于 50%
3 = 小于或等于 30%
4 = 小于或等于 0%
从此:
TABLE A
- Products Actual Qty WIP QTY
- Product A 5 0
- Product B 5 0
- Product C 733 72
- Product D 532 90
- Product E 510 360
TABLE B
- MIN QTY MAX QTY TOPUP QTY SIGNAL
- 100 1000 NULL NULL
- 329 857 NULL NULL
- 393 1025 NULL NULL
- 262 683 NULL NULL
- 319 832 NULL NULL
变成这样:
TABLE A
- Products Actual Qty WIP QTY
- Product A 5 0
- Product B 5 0
- Product C 733 72
- Product D 532 90
- Product E 510 360
TABLE B
- MIN QTY MAX QTY TOPUP QTY SIGNAL
- 100 1000 995 4
- 329 857 852 4
- 393 1025 220 NULL
- 262 683 61 NULL
- 319 832 680 4
最佳答案
我假设 TableB 与 TableA 有某种关系
如果它们之间没有办法关联,这是不可能的。
DECLARE @tableA TABLE(Products VARCHAR(50), Actual_Qty INT, WIP_Qty INT)
DECLARE @tableB TABLE(Products VARCHAR(50), Min_Qty INT, Max_Qty INT, Topup_Qty INT, Signal INT)
INSERT INTO @tableA VALUES
('Product A',5, 0),
('Product B', 5, 0),
('Product C', 733 , 72),
('Product D', 532 , 90),
('Product E', 510 , 360)
INSERT INTO @tableB VALUES
('Product A',100, 1000,995, 4),
('Product B',329, 857 ,852, 4),
('Product C',393, 1025,220, NULL),
('Product D',262, 683 ,61 , NULL),
('Product E',319, 832 ,680, 4)
SELECT A.Products,A.Actual_Qty,A.WIP_Qty,A.Actual_Qty-A.WIP_Qty Topup,'>' [ ],B.Products,B.Min_Qty,B.Max_Qty,B.Topup_Qty,B.Signal, 'now calculate > ' [ ]
, CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty SignalTest
, CASE
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty >= 60 THEN 1
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty BETWEEN 50 AND 60 THEN 2
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty BETWEEN 30 AND 50 THEN 3
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty < 30 THEN 4
END Signal
FROM @tableA A
INNER JOIN @tableB B ON B.Products = A.Products
/*Here is the update but, you can switch the tables for your tables*/
UPDATE B
SET B.Signal = (SELECT CASE
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty >= 60 THEN 1
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty BETWEEN 50 AND 60 THEN 2
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty BETWEEN 30 AND 50 THEN 3
WHEN CONVERT(MONEY,(A.Actual_Qty-A.WIP_Qty )*100)/B.Max_Qty < 30 THEN 4
END Signal)
FROM @tableA A
INNER JOIN @tableB B ON B.Products = A.Products
SELECT
*
FROM @tableB
关于mysql - 如何查询 2 个 SQL 表并使用 1 个查询更改数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/19805416/