我有两张桌子
Book Table
+--------+------+------+--------+
| EmpID |BookID| Type | Color |
+--------+------+------+--------+
| 1 | A | 0 |Blue |
| 2 | B | 0 |Black |
| 3 | C | 0 |White |
| 4 | D | 0 |Blue |
+--------+------+------+--------+
->Color Can Be only 'Blue' or 'Black' or 'White'
->EmpID and BookId are Unique
Settings Table
+--------+------------+--------------+
| EmpID | Blue | Black/White |
+--------+------------+--------------+
| 1 | 0 | 0 |
| 2 | 0 | 1 |
| 3 | 1 | 0 |
| 4 | 1 | 1 |
+--------+------------+--------------+
->For Emp1 Blue and Black are Not Allowed
->For Emp2 Only Black/White are Allowed
我在Book Table上添加了一个名为TYPE的新列,并将其默认为'0'。现在我需要根据设置表中的逻辑更新类型的值&颜色列值。
LOGIC For Updating
+--------+------------+------------+-------+
| Color | Blue | Black/White| TYPE |
+--------+------------+---------------------+
| blue | 0 | 0 | 0 |
| white | 0 | 1 | 1 |
| black | 1 | 0 | 0 |
| blue | 1 | 1 | 1 |
+--------+------------+------------+--------+
-> If Color is BLUE and BLUE_SETTING is 1 then TYPE is 1 else 0
-> If Color is BLACK OR WHITE and BLACK/WHITE Setting is 1 then TYPE is 1 else 0