December 2002
Intermediate to advanced
928 pages
85h 29m
English
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Parameters
- PARTITION
Specifies that the query result set should be partitioned into one or more groups based on one or more expressions (expr).
- ORDER BY
Specifes how data is to be ordered within a partition.
- position
Specifies that the partition should be ordered according to the expression in this relative position in the expression list.
- c_alias
Specifies that the partition should be ordered according to the column identified by this alias.
- ROWS
Specifies that a window is defined in terms of physical rows.
- RANGE
Specifies that a window is defined in terms of a logical offset.
- BETWEEN
Specifies that a starting and ending point for a window will be defined.
- UNBOUNDED PRECEDING
Specifies that the window ends at the last row of the query.
- UNBOUNDED FOLLOWING
Specifies that the window starts at the first row of the query.
- CURRENT ROW
Specifies that the window begins at the current row or value, depending on whether ROWS or RANGE was specified.
- value_expr
Resolves to a number representing a physical offset if ROWS is specified or to a number representing a logical offset if RANGE is specified.
Common keywords and clauses: ASC, DESC, NULLS FIRST, NULLS LAST.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.