OFFSET Clause
Description
The OFFSET
clause is used to specify the number of rows to skip before beginning to return rows
returned by the SELECT statement. In general, this clause
is used in conjunction with ORDER BY to
ensure that the results are deterministic.
Syntax
OFFSET integer_expression
Parameters
-
integer_expression
Specifies a foldable expression that returns an integer.
Examples
CREATE TABLE person (name STRING, age INT);
INSERT INTO person VALUES
('Zen Hui', 25),
('Anil B', 18),
('Shone S', 16),
('Mike A', 25),
('John A', 18),
('Jack N', 16);
-- Skip the first two rows.
SELECT name, age FROM person ORDER BY name OFFSET 2;
+-------+---+
| name|age|
+-------+---+
| John A| 18|
| Mike A| 25|
|Shone S| 16|
|Zen Hui| 25|
+-------+---+
-- Skip the first two rows and returns the next three rows.
SELECT name, age FROM person ORDER BY name LIMIT 3 OFFSET 2;
+-------+---+
| name|age|
+-------+---+
| John A| 18|
| Mike A| 25|
|Shone S| 16|
+-------+---+
-- A function expression as an input to OFFSET.
SELECT name, age FROM person ORDER BY name OFFSET length('SPARK');
+-------+---+
| name|age|
+-------+---+
|Zen Hui| 25|
+-------+---+
-- A non-foldable expression as an input to OFFSET is not allowed.
SELECT name, age FROM person ORDER BY name OFFSET length(name);
org.apache.spark.sql.AnalysisException: The offset expression must evaluate to a constant value ...