Have you actually looked at or used the array stuff in postgres? It's pretty horrible syntactically and worse, very explicit in it's recommended use.
"Tip: Arrays are not sets; searching for specific array elements can be a sign of database misdesign. Consider using a separate table with a row for each item that would be an array element. This will be easier to search, and is likely to scale better for a large number of elements."
Searching an array is a pretty common task, Mongo does really well in its ability to search into objects in a document.
I had to laugh a little at one of the sample queries:
SELECT f1[1][-2][3] AS e1, f1[1][-1][5] AS e2
FROM (SELECT '[1:1][-2:-1][3:5]={{{1,2,3},{4,5,6}}}'::int[] AS f1) AS ss;
Seriously?
"Tip: Arrays are not sets; searching for specific array elements can be a sign of database misdesign. Consider using a separate table with a row for each item that would be an array element. This will be easier to search, and is likely to scale better for a large number of elements."
Searching an array is a pretty common task, Mongo does really well in its ability to search into objects in a document.
I had to laugh a little at one of the sample queries:
SELECT f1[1][-2][3] AS e1, f1[1][-1][5] AS e2 FROM (SELECT '[1:1][-2:-1][3:5]={{{1,2,3},{4,5,6}}}'::int[] AS f1) AS ss;
Seriously?