How to create sequence 0.1,0.2....0.6 1,1.1,1.2...1.6,2

Question

hi to all,
i tried to do above type sequence which similar circket over sequence , i tried to do but increament and start with are allowing only integer value..
if anny one know the answer please share with us ....
thnaks in advance ....

Answer 1

Hello
I'll take a wild stab and make an assumption that you need this in a query rather than using it for some sort of primary key generation...
SELECT
      TO_CHAR(first_num)||'.'||TO_CHAR(second_num)
FROM
    (   SELECT
              ROWNUM - 1 first_num
        FROM
            dual
        CONNECT BY LEVEL <=10
    (   SELECT
              ROWNUM second_num
        FROM
            dual
        CONNECT BY LEVEL <=10
ORDER BY first_num,second_num   
TO_CHAR(FIRST_NUM)||'.'||TO_CHAR(SECOND_NUM)
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
0.10
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
1.10
2.1
2.2
select
       rtrim(xmlagg(xmlelement(e, seq || ',')).extract('//text()').extract('//text()') ,',') seq
from ( SELECT
              TO_CHAR(first_num)||'.'||TO_CHAR(second_num) seq
        FROM
            (   SELECT
                      ROWNUM - 1 first_num
                FROM
                    dual
                CONNECT BY LEVEL <=10
            (   SELECT
                      ROWNUM second_num
                FROM
                    dual
                CONNECT BY LEVEL <=10
        ORDER BY first_num,second_num
SEQ
0.1,0.2,0.3,0.4,0.5,0.6,0.7,0.8,0.9,0.10,1.1,1.2,1.3,1.4,1.5,1.6,1.7,1.8,1.9,1.10,2.1,2.2,2.3,2.4,2.5,2.6,2.7,2.8,2.9,2.10,3.1,3.2,3.3,3.4,3.5,3.6,3.7
,3.8,3.9,3.10,4.1,4.2,4.3,4.4,4.5,4.6,4.7,4.8,4.9,4.10,5.1,5.2,5.3,5.4,5.5,5.6,5.7,5.8,5.9,5.10,6.1,6.2,6.3,6.4,6.5,6.6,6.7,6.8,6.9,6.10,7.1,7.2,7.3,7
.4,7.5,7.6,7.7,7.8,7.9,7.10,8.1,8.2,8.3,8.4,8.5,8.6,8.7,8.8,8.9,8.10,9.1,9.2,9.3,9.4,9.5,9.6,9.7,9.8,9.9,9.10but without more info, it is just a wild stab.
HTH
David