Returns the rows of a range of numbers
Oracle Database 10g Enterprise Edition Release 10.2.0.1.0Hello
Suppose we have a table that contains 2 columns, one is the beginning of range a second the end of it:
with t1 as
(select 100 start_r, 250 end_r, 'R1' range_type from dual
union all
select 300 start_r, 350 end_r, 'R2' range_type from dual)
select * from t1CNUMBER RANGE_TYPE
100 R1
101 R1
102 R1
.....
250 R1
300 R2
.....
350 R2
WITH t1 AS
(SELECT 100 start_r, 250 end_r, 'R1' range_type
FROM DUAL
UNION ALL
SELECT 300 start_r, 350 end_r, 'R2' range_type
FROM DUAL)
SELECT *
FROM t1,
(SELECT LEVEL lvl
FROM dual
CONNECT BY LEVEL <= (SELECT MAX (end_r) mx
FROM t1)) t2
where t2.lvl between t1.start_r and t1.end_r
Tags: Database
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