Does memsql support Full Outer Join?
I wanted to have a full outer join in memsql. Something like
SELECT *
FROM A FULL OUTER JOIN B
ON A.id = B.id
Is it possible ?
outer-join full-outer-join memsql
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
add a comment |
I wanted to have a full outer join in memsql. Something like
SELECT *
FROM A FULL OUTER JOIN B
ON A.id = B.id
Is it possible ?
outer-join full-outer-join memsql
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
2
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25
add a comment |
I wanted to have a full outer join in memsql. Something like
SELECT *
FROM A FULL OUTER JOIN B
ON A.id = B.id
Is it possible ?
outer-join full-outer-join memsql
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
I wanted to have a full outer join in memsql. Something like
SELECT *
FROM A FULL OUTER JOIN B
ON A.id = B.id
Is it possible ?
outer-join full-outer-join memsql
outer-join full-outer-join memsql
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
edited Sep 3 '15 at 5:26
Tim Biegeleisen
221k1388141
221k1388141
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
asked Sep 3 '15 at 5:22
Vivek AdityaVivek Aditya
7911235
7911235
2
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25
add a comment |
2
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25
2
2
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25
add a comment |
1 Answer
1
active
oldest
votes
It appears that MemSQL does not have a FULL OUTER JOIN syntax. However, you should be able to simulate a full outer join in MemSQL using a combination of LEFT and RIGHT OUTER JOIN operations:
SELECT * FROM A
LEFT OUTER JOIN B ON A.id = B.id
UNION ALL
SELECT * FROM A
RIGHT OUTER JOIN B on A.id = B.id
WHERE ISNULL(A.id)
The first SELECT covers the orange area, namely matching records between A and B along with records in A which do not match to anything in B. The second query obtains only records in B which do not match to anything in A. Using UNION ALL instead of UNION ensures that duplicates are not removed.
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
It appears that MemSQL does not have a FULL OUTER JOIN syntax. However, you should be able to simulate a full outer join in MemSQL using a combination of LEFT and RIGHT OUTER JOIN operations:
SELECT * FROM A
LEFT OUTER JOIN B ON A.id = B.id
UNION ALL
SELECT * FROM A
RIGHT OUTER JOIN B on A.id = B.id
WHERE ISNULL(A.id)
The first SELECT covers the orange area, namely matching records between A and B along with records in A which do not match to anything in B. The second query obtains only records in B which do not match to anything in A. Using UNION ALL instead of UNION ensures that duplicates are not removed.
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
add a comment |
It appears that MemSQL does not have a FULL OUTER JOIN syntax. However, you should be able to simulate a full outer join in MemSQL using a combination of LEFT and RIGHT OUTER JOIN operations:
SELECT * FROM A
LEFT OUTER JOIN B ON A.id = B.id
UNION ALL
SELECT * FROM A
RIGHT OUTER JOIN B on A.id = B.id
WHERE ISNULL(A.id)
The first SELECT covers the orange area, namely matching records between A and B along with records in A which do not match to anything in B. The second query obtains only records in B which do not match to anything in A. Using UNION ALL instead of UNION ensures that duplicates are not removed.
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
add a comment |
It appears that MemSQL does not have a FULL OUTER JOIN syntax. However, you should be able to simulate a full outer join in MemSQL using a combination of LEFT and RIGHT OUTER JOIN operations:
SELECT * FROM A
LEFT OUTER JOIN B ON A.id = B.id
UNION ALL
SELECT * FROM A
RIGHT OUTER JOIN B on A.id = B.id
WHERE ISNULL(A.id)
The first SELECT covers the orange area, namely matching records between A and B along with records in A which do not match to anything in B. The second query obtains only records in B which do not match to anything in A. Using UNION ALL instead of UNION ensures that duplicates are not removed.
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
It appears that MemSQL does not have a FULL OUTER JOIN syntax. However, you should be able to simulate a full outer join in MemSQL using a combination of LEFT and RIGHT OUTER JOIN operations:
SELECT * FROM A
LEFT OUTER JOIN B ON A.id = B.id
UNION ALL
SELECT * FROM A
RIGHT OUTER JOIN B on A.id = B.id
WHERE ISNULL(A.id)
The first SELECT covers the orange area, namely matching records between A and B along with records in A which do not match to anything in B. The second query obtains only records in B which do not match to anything in A. Using UNION ALL instead of UNION ensures that duplicates are not removed.
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
edited Nov 12 '18 at 14:55
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
answered Sep 3 '15 at 5:39
Tim BiegeleisenTim Biegeleisen
221k1388141
221k1388141
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
add a comment |
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
I would appreciate if you could update the link that is no longer valid. Thanks!
– Andrey Belykh
Nov 12 '18 at 14:49
add a comment |
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2
docs.memsql.com/4.0/ref/SELECT
– Ruchi
Sep 3 '15 at 5:25