Mysql sql请求问题,多个ID
我有这两个表,我需要从ENT表中选择所有内容,并显示技能的名称,而不是ID 技能1、技能2、技能3参考技能表中的idSkill 谢谢你的帮助 Ent表格:Mysql sql请求问题,多个ID,mysql,Mysql,我有这两个表,我需要从ENT表中选择所有内容,并显示技能的名称,而不是ID 技能1、技能2、技能3参考技能表中的idSkill 谢谢你的帮助 Ent表格: +-------+---------+---------+---------+---------+ | idEnt | nameEnt | skill_1 | skill_2 | skill_3 | +-------+---------+---------+---------+---------+ | 1 | testA |
+-------+---------+---------+---------+---------+
| idEnt | nameEnt | skill_1 | skill_2 | skill_3 |
+-------+---------+---------+---------+---------+
| 1 | testA | 1 | 2 | 3 |
| 2 | testB | 4 | 5 | 6 |
+-------+---------+---------+---------+---------+
+---------+-------------+
| idSkill | nameSkill |
+---------+-------------+
| 1 | Storekeeper |
| 2 | Designer |
| 3 | Teacher |
| 4 | Baker |
| 5 | Gardener |
| 6 | Secretary |
+---------+-------------+
技能表:
+-------+---------+---------+---------+---------+
| idEnt | nameEnt | skill_1 | skill_2 | skill_3 |
+-------+---------+---------+---------+---------+
| 1 | testA | 1 | 2 | 3 |
| 2 | testB | 4 | 5 | 6 |
+-------+---------+---------+---------+---------+
+---------+-------------+
| idSkill | nameSkill |
+---------+-------------+
| 1 | Storekeeper |
| 2 | Designer |
| 3 | Teacher |
| 4 | Baker |
| 5 | Gardener |
| 6 | Secretary |
+---------+-------------+
使用此表结构,您需要在
ent
表上加入skill
表3次,每次使用不同的别名:
select idEnt, nameEnt, s1.nameSkill as skill1Name, s2.nameSkill as skill2Name, s3.nameSkill as skill3Name
from ent e
inner join skill s1 on e.skill_1=s1.idSkill
inner join skill s2 on e.skill_2=s2.idSkill
inner join skill s3 on e.skill_3=s3.idSkill
您可能需要考虑更改表结构,并在<代码> ENT/CODE >和