Two Table Join with Sub-query?
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So I am working on an exercise to improve my SQL skills and I need to modify my query to add a subquery that looks for the existence of a customer ID in the CUSTOMERS table. The exercise also notes that this is a correlated sub-query so you will have to match the customer ID from the sub-query to the customer ID in the outer query. The title of the section of this exercise is "Two Table Join with Subquery". After researching and trying for a few hours now, I've exhausted all my resources but one. Any help would be much appreciated! (I am using Oracle Apex for this.)
SELECT ORDER_ID, ORDER_MODE, CUSTOMER_ID, PRODUCT_ID
FROM ORDERS
NATURAL JOIN ORDER_ITEMS;
sql oracle oracle-apex
asked Nov 11 at 2:27
Dominic Devero
246
|
show 5 more comments
up vote
0
down vote
favorite
So I am working on an exercise to improve my SQL skills and I need to modify my query to add a subquery that looks for the existence of a customer ID in the CUSTOMERS table. The exercise also notes that this is a correlated sub-query so you will have to match the customer ID from the sub-query to the customer ID in the outer query. The title of the section of this exercise is "Two Table Join with Subquery". After researching and trying for a few hours now, I've exhausted all my resources but one. Any help would be much appreciated! (I am using Oracle Apex for this.)
SELECT ORDER_ID, ORDER_MODE, CUSTOMER_ID, PRODUCT_ID
FROM ORDERS
NATURAL JOIN ORDER_ITEMS;
sql oracle oracle-apex
asked Nov 11 at 2:27
Dominic Devero
246
A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05
|
show 5 more comments
up vote
0
down vote
favorite
up vote
0
down vote
favorite
So I am working on an exercise to improve my SQL skills and I need to modify my query to add a subquery that looks for the existence of a customer ID in the CUSTOMERS table. The exercise also notes that this is a correlated sub-query so you will have to match the customer ID from the sub-query to the customer ID in the outer query. The title of the section of this exercise is "Two Table Join with Subquery". After researching and trying for a few hours now, I've exhausted all my resources but one. Any help would be much appreciated! (I am using Oracle Apex for this.)
SELECT ORDER_ID, ORDER_MODE, CUSTOMER_ID, PRODUCT_ID
FROM ORDERS
NATURAL JOIN ORDER_ITEMS;
sql oracle oracle-apex
asked Nov 11 at 2:27
Dominic Devero
246
So I am working on an exercise to improve my SQL skills and I need to modify my query to add a subquery that looks for the existence of a customer ID in the CUSTOMERS table. The exercise also notes that this is a correlated sub-query so you will have to match the customer ID from the sub-query to the customer ID in the outer query. The title of the section of this exercise is "Two Table Join with Subquery". After researching and trying for a few hours now, I've exhausted all my resources but one. Any help would be much appreciated! (I am using Oracle Apex for this.)
SELECT ORDER_ID, ORDER_MODE, CUSTOMER_ID, PRODUCT_ID
FROM ORDERS
NATURAL JOIN ORDER_ITEMS;
sql oracle oracle-apex
sql oracle oracle-apex
asked Nov 11 at 2:27
Dominic Devero
246
asked Nov 11 at 2:27
Dominic Devero
246
edited Nov 11 at 3:00
asked Nov 11 at 2:27
Dominic Devero
246
asked Nov 11 at 2:27
Dominic Devero
246
asked Nov 11 at 2:27
Dominic Devero
246
246
A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05
|
show 5 more comments
A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05
A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05
|
show 5 more comments
1 Answer
1
active
oldest
votes
up vote
2
down vote
accepted
Using exists you can check for existence,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
This would do the second,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID,P.TRANSLATED_NAME
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
INNER JOIN PRODUCT_DESCRIPTIONS P on P.PRODUCT_ID=OI.PRODUCT_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
answered Nov 11 at 2:47
Ajan Balakumaran
50229
add a comment |
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
2
down vote
accepted
Using exists you can check for existence,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
This would do the second,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID,P.TRANSLATED_NAME
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
INNER JOIN PRODUCT_DESCRIPTIONS P on P.PRODUCT_ID=OI.PRODUCT_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
answered Nov 11 at 2:47
Ajan Balakumaran
50229
add a comment |
up vote
2
down vote
accepted
Using exists you can check for existence,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
This would do the second,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID,P.TRANSLATED_NAME
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
INNER JOIN PRODUCT_DESCRIPTIONS P on P.PRODUCT_ID=OI.PRODUCT_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
answered Nov 11 at 2:47
Ajan Balakumaran
50229
add a comment |
up vote
2
down vote
accepted
up vote
2
down vote
accepted
Using exists you can check for existence,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
This would do the second,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID,P.TRANSLATED_NAME
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
INNER JOIN PRODUCT_DESCRIPTIONS P on P.PRODUCT_ID=OI.PRODUCT_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
answered Nov 11 at 2:47
Ajan Balakumaran
50229
Using exists you can check for existence,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
This would do the second,
SELECT O.ORDER_ID, O.ORDER_MODE, O.CUSTOMER_ID, OI.PRODUCT_ID,P.TRANSLATED_NAME
FROM ORDERS O
INNER JOIN ORDER_ITEMS OI on O.ORDER_ID=OI.ORDER_ID
INNER JOIN PRODUCT_DESCRIPTIONS P on P.PRODUCT_ID=OI.PRODUCT_ID
WHERE EXISTS(
SELECT * FROM CUSTOMERS C
WHERE O.CUSTOMER_ID=C.CUSTOMER_ID
);
answered Nov 11 at 2:47
Ajan Balakumaran
50229
edited Nov 11 at 3:18
answered Nov 11 at 2:47
Ajan Balakumaran
50229
answered Nov 11 at 2:47
Ajan Balakumaran
50229
answered Nov 11 at 2:47
Ajan Balakumaran
50229
50229
add a comment |
add a comment |
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A sample set of data would be helpful
– Ajan Balakumaran
Nov 11 at 2:31
I've added the table data!
– Dominic Devero
Nov 11 at 2:40
check the solution and let be know whether it helped :)
– Ajan Balakumaran
Nov 11 at 2:54
That worked great! Just one last thing I hope you could help me with! The exercise now wants me to modify the previous SQL query to add the translated name column from the PRODUCT_DESCRIPTIONS table. I've added that table data to the post, thanks!
– Dominic Devero
Nov 11 at 3:02
Since you are learning I would like to help you rather giving the answer, so now you have product_id in one of the tables join that id to products and in the select statement select the translation name
– Ajan Balakumaran
Nov 11 at 3:05