が1054'unknown列

Question

**************************physidesk (is a database)*********************** 
**doctor_personal*** 
----------------------- 
c201_user_id c201_name 
------------------------- 
1    charles 
2    jasvi 
3    vinod 
4    mahesh 

**clinic_timing** 
-------------------------------------------- 
c201_user_id c202_weekid c203_start_timing 
--------------------------------------------- 
1    mon,wed  5.30pm 
2    thurs   5.00pm 
3    thur,friday 4.30pm 

**education** 
------------------------------------- 
college_ID  c201_user_id complete_year 
------------------------------------- 
mgruniversity 1    1963 
annamalaiuniv 2    1969 

**result** 
----------------------------------------------------------------------------- 
c201_user_id c201_name c202_weekid c203_start_timing college_ID complete_year 
------------------------------------------------------------------------------ 
1    charles mon,wed  4.30pm   mgruniversity 1963 
2    jasvi  thur,friday 5.30pm   mgruniversity 1963 
3    vinod  thurs   4.30pm   annamalaiuniv 1969 
4    mahesh mon,wed  5.00pm   mgruniversity 1963 

である私は、このようなコードを記述します。

select dp.c201_user_id 
     ,dp.c201_name 
     ,ct.c202_week_id 
     ,ct.c203_start_timing 
     ,edu.college_ID 
     ,edu.complete_year 
from physidesk.doctor_personal dp 
join physidesk.clinic_timing ct on c201_USER_ID =ct.C101_USER_ID 
join physidesk.t207_education edu on ct.C101_USER_ID=edu.C101_USER_ID; 

は、任意のは、そのocurringエラーは、この文字列で検索してください

Answer 1

言うことができる -

select dp.c201_user_id 
     ,dp.c201_name 
     ,ct.c202_week_id 
     ,ct.c203_start_timing 
     ,edu.college_ID 
     ,edu.complete_year 
from physidesk.doctor_personal dp 
join physidesk.clinic_timing ct on dp.c201_USER_ID =ct.C101_USER_ID 
join physidesk.t207_education edu on ct.C101_USER_ID=edu.C101_USER_ID; 

Answer 2

edudationテーブルがt207_educationであると仮定すると、以下のクエリが機能するはずです。最初の参加時には、c201_user_idではなくdp.c201_user_idが必要です。

select dp.c201_user_id 
    ,dp.c201_name 
    ,ct.c202_week_id 
    ,ct.c203_start_timing 
    ,edu.college_ID 
    ,edu.complete_year 
    from physidesk.doctor_personal dp 
    join physidesk.clinic_timing ct on dp.c201_user_id =ct.c201_user_id 
    join physidesk.t207_education edu on ct.c201_user_id=edu.c201_user_id;