我有两个表:

mysql> SELECT * FROM MasterListItemtype;
+----------------------+------------------------+
| MasterListItemtypeID | MasterListItemtypeName |
+----------------------+------------------------+
|                    1 | Starters               |
|                    2 | Main Course            |
|                    3 | Side Course            |
|                    4 | Others                 |
|                    5 | Desert                 |
+----------------------+------------------------+
5 rows in set (0.00 sec)

mysql> SELECT * FROM MasterListMenuItems;
+------------------+-----------------------+-------+----------------------+
| MasterListMenuID | MasterListMenuName    | Vegan | MasterListItemtypeID |
+------------------+-----------------------+-------+----------------------+
|                1 | Vada                  |     1 |                    1 |
|                4 | Chinese Chicken Salad |     0 |                    1 |
|                5 | Dosa Chicken Salad    |     0 |                    1 |
|                6 | Gobi Manchuri         |     1 |                    2 |
|                7 | Indian Salad          |     1 |                    3 |
|                8 | Gobi Chilli Manchuri  |     1 |                    2 |
|                9 | Chocolate IceCream    |     1 |                    5 |
|               10 | Vanilla IceCream      |     1 |                    5 |
+------------------+-----------------------+-------+----------------------+
8 rows in set (0.00 sec)




注意这里:


MasterListMenuIDMasterListMenuItems的主键
MasterListItemtypeIDMasterListItemtype的主键
MasterListItemtypeIDMasterListMenuItems的外键






如何进行Mysql查询,以便:

我需要列出表MasterListMenuNameMasterListMenuItems中的元素,这些元素是starters

最佳答案

尝试这个:

select MasterListMenuName from  MasterListMenuItems where MasterListItemtypeID
 =
 (
select MasterListItemtypeID from MasterListItemtype where MasterListItemtypeName
= 'Starters')


(要么)

select m.MasterListMenuName from  MasterListMenuItems m
join  MasterListItemtype n
on m.MasterListItemtypeID = n.MasterListItemtypeID
and m.MasterListMenuName = 'Starters'

09-05 12:38