Check if a column's values are increasing per tuple
I have a relation:
A(id INT, name STRING, time INT, val INT)
1 a 1 1
1 a 2 2
2 b 1 1
2 b 2 3
3 b 1 1
3 b 2 1
and so on. I want to output the id and name of 1 and 2, because their val of a tuple at time 1 is lesser than the val of the tuple at time 2. I'm completely stumped here. I can't give an attempt example because I don't know how to compare a tuple sequentially.
postgresql
asked 5 mins ago
Charlie BakerCharlie Baker
1
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I have a relation:
A(id INT, name STRING, time INT, val INT)
1 a 1 1
1 a 2 2
2 b 1 1
2 b 2 3
3 b 1 1
3 b 2 1
and so on. I want to output the id and name of 1 and 2, because their val of a tuple at time 1 is lesser than the val of the tuple at time 2. I'm completely stumped here. I can't give an attempt example because I don't know how to compare a tuple sequentially.
postgresql
asked 5 mins ago
Charlie BakerCharlie Baker
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I have a relation:
A(id INT, name STRING, time INT, val INT)
1 a 1 1
1 a 2 2
2 b 1 1
2 b 2 3
3 b 1 1
3 b 2 1
and so on. I want to output the id and name of 1 and 2, because their val of a tuple at time 1 is lesser than the val of the tuple at time 2. I'm completely stumped here. I can't give an attempt example because I don't know how to compare a tuple sequentially.
postgresql
asked 5 mins ago
Charlie BakerCharlie Baker
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I have a relation:
A(id INT, name STRING, time INT, val INT)
1 a 1 1
1 a 2 2
2 b 1 1
2 b 2 3
3 b 1 1
3 b 2 1
and so on. I want to output the id and name of 1 and 2, because their val of a tuple at time 1 is lesser than the val of the tuple at time 2. I'm completely stumped here. I can't give an attempt example because I don't know how to compare a tuple sequentially.
postgresql
postgresql
asked 5 mins ago
Charlie BakerCharlie Baker
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Charlie BakerCharlie Baker
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Charlie BakerCharlie Baker
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 5 mins ago
Charlie BakerCharlie Baker
1
asked 5 mins ago
Charlie BakerCharlie Baker
1
1
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Charlie Baker is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
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