How do I get every nth row in a table, or how do I break up a subset of a table into sets or rows of
- by Jherico
I have a table of heterogeneous pieces of data identified by a primary key (ID) and a type identifier (TYPE_ID). I would like to be able to perform a query that returns me a set of ranges for a given type broken into even page sizes. For instance, if there are 10,000 records of type '1' and I specify a page size of 1000, I want 10 pairs of numbers back representing values I can use in a BETWEEN clause in subsequent queries to query the DB 1000 records at a time.
My initial attempt was something like this
select id, rownum from CONTENT_TABLE
where type_id = ? and mod(rownum, ?) = 0
But this doesn't work.
