Decimal point is removed before update to character variable












0















I have data in the below format and I want to update a destination table column of type varchar2 with below values. But the problem is it updates as .462 instead of 0.462 by using trim with leading '0'.



source              destination column
----------------- ------------------
0000004.304300000 4.3043
0000005.504500000 5.5045
0000141.400000000 141.4
0000138.900000000 138.9
0000000.462000000 0.462
0000000.000297000 0.000297









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  • 3





    Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

    – mathguy
    Dec 31 '18 at 14:25


















0















I have data in the below format and I want to update a destination table column of type varchar2 with below values. But the problem is it updates as .462 instead of 0.462 by using trim with leading '0'.



source              destination column
----------------- ------------------
0000004.304300000 4.3043
0000005.504500000 5.5045
0000141.400000000 141.4
0000138.900000000 138.9
0000000.462000000 0.462
0000000.000297000 0.000297









share|improve this question




















  • 3





    Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

    – mathguy
    Dec 31 '18 at 14:25
















0












0








0








I have data in the below format and I want to update a destination table column of type varchar2 with below values. But the problem is it updates as .462 instead of 0.462 by using trim with leading '0'.



source              destination column
----------------- ------------------
0000004.304300000 4.3043
0000005.504500000 5.5045
0000141.400000000 141.4
0000138.900000000 138.9
0000000.462000000 0.462
0000000.000297000 0.000297









share|improve this question
















I have data in the below format and I want to update a destination table column of type varchar2 with below values. But the problem is it updates as .462 instead of 0.462 by using trim with leading '0'.



source              destination column
----------------- ------------------
0000004.304300000 4.3043
0000005.504500000 5.5045
0000141.400000000 141.4
0000138.900000000 138.9
0000000.462000000 0.462
0000000.000297000 0.000297






sql oracle






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share|improve this question













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edited Dec 31 '18 at 14:08









Littlefoot

22.3k71533




22.3k71533










asked Dec 31 '18 at 12:47









kirthi kumarkirthi kumar

93




93








  • 3





    Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

    – mathguy
    Dec 31 '18 at 14:25
















  • 3





    Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

    – mathguy
    Dec 31 '18 at 14:25










3




3





Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

– mathguy
Dec 31 '18 at 14:25







Why, oh why are you storing numbers in varchar2 data type? Even if the source is not under your control, at least the target should be. Make the destination column a number column; if you must show those numbers with a specific format model on your reports (there is no other place where you must show numbers as strings, with a specific format model), you can do so when you create the reports.

– mathguy
Dec 31 '18 at 14:25














1 Answer
1






active

oldest

votes


















1














A little bit of TO_CHARing and TO_NUMBERing with appropriate format mask might do the job. Have a look at the example:



SQL> create table test (source varchar2 (20), destination varchar2(20));

Table created.

SQL> insert into test (source)
2 select '0000004.304300000' from dual union all
3 select '0000000.462000000' from dual union all
4 select '0000141.400000000' from dual union all
5 select '0000033.000000000' from dual;

4 rows created.

SQL> alter session set nls_numeric_characters = '.,';

Session altered.

SQL> update test set
2 destination = rtrim(to_char(to_number(source), 'fm999990D99999999'), '.');

4 rows updated.

SQL> select * From test;

SOURCE DESTINATION
-------------------- --------------------
0000004.304300000 4.3043
0000000.462000000 0.462
0000141.400000000 141.4
0000033.000000000 33

SQL>





share|improve this answer





















  • 1





    Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

    – mathguy
    Dec 31 '18 at 14:28











  • Thank you, @mathguy. Fixed.

    – Littlefoot
    Dec 31 '18 at 14:34











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














A little bit of TO_CHARing and TO_NUMBERing with appropriate format mask might do the job. Have a look at the example:



SQL> create table test (source varchar2 (20), destination varchar2(20));

Table created.

SQL> insert into test (source)
2 select '0000004.304300000' from dual union all
3 select '0000000.462000000' from dual union all
4 select '0000141.400000000' from dual union all
5 select '0000033.000000000' from dual;

4 rows created.

SQL> alter session set nls_numeric_characters = '.,';

Session altered.

SQL> update test set
2 destination = rtrim(to_char(to_number(source), 'fm999990D99999999'), '.');

4 rows updated.

SQL> select * From test;

SOURCE DESTINATION
-------------------- --------------------
0000004.304300000 4.3043
0000000.462000000 0.462
0000141.400000000 141.4
0000033.000000000 33

SQL>





share|improve this answer





















  • 1





    Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

    – mathguy
    Dec 31 '18 at 14:28











  • Thank you, @mathguy. Fixed.

    – Littlefoot
    Dec 31 '18 at 14:34
















1














A little bit of TO_CHARing and TO_NUMBERing with appropriate format mask might do the job. Have a look at the example:



SQL> create table test (source varchar2 (20), destination varchar2(20));

Table created.

SQL> insert into test (source)
2 select '0000004.304300000' from dual union all
3 select '0000000.462000000' from dual union all
4 select '0000141.400000000' from dual union all
5 select '0000033.000000000' from dual;

4 rows created.

SQL> alter session set nls_numeric_characters = '.,';

Session altered.

SQL> update test set
2 destination = rtrim(to_char(to_number(source), 'fm999990D99999999'), '.');

4 rows updated.

SQL> select * From test;

SOURCE DESTINATION
-------------------- --------------------
0000004.304300000 4.3043
0000000.462000000 0.462
0000141.400000000 141.4
0000033.000000000 33

SQL>





share|improve this answer





















  • 1





    Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

    – mathguy
    Dec 31 '18 at 14:28











  • Thank you, @mathguy. Fixed.

    – Littlefoot
    Dec 31 '18 at 14:34














1












1








1







A little bit of TO_CHARing and TO_NUMBERing with appropriate format mask might do the job. Have a look at the example:



SQL> create table test (source varchar2 (20), destination varchar2(20));

Table created.

SQL> insert into test (source)
2 select '0000004.304300000' from dual union all
3 select '0000000.462000000' from dual union all
4 select '0000141.400000000' from dual union all
5 select '0000033.000000000' from dual;

4 rows created.

SQL> alter session set nls_numeric_characters = '.,';

Session altered.

SQL> update test set
2 destination = rtrim(to_char(to_number(source), 'fm999990D99999999'), '.');

4 rows updated.

SQL> select * From test;

SOURCE DESTINATION
-------------------- --------------------
0000004.304300000 4.3043
0000000.462000000 0.462
0000141.400000000 141.4
0000033.000000000 33

SQL>





share|improve this answer















A little bit of TO_CHARing and TO_NUMBERing with appropriate format mask might do the job. Have a look at the example:



SQL> create table test (source varchar2 (20), destination varchar2(20));

Table created.

SQL> insert into test (source)
2 select '0000004.304300000' from dual union all
3 select '0000000.462000000' from dual union all
4 select '0000141.400000000' from dual union all
5 select '0000033.000000000' from dual;

4 rows created.

SQL> alter session set nls_numeric_characters = '.,';

Session altered.

SQL> update test set
2 destination = rtrim(to_char(to_number(source), 'fm999990D99999999'), '.');

4 rows updated.

SQL> select * From test;

SOURCE DESTINATION
-------------------- --------------------
0000004.304300000 4.3043
0000000.462000000 0.462
0000141.400000000 141.4
0000033.000000000 33

SQL>






share|improve this answer














share|improve this answer



share|improve this answer








edited Dec 31 '18 at 14:34

























answered Dec 31 '18 at 14:07









LittlefootLittlefoot

22.3k71533




22.3k71533








  • 1





    Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

    – mathguy
    Dec 31 '18 at 14:28











  • Thank you, @mathguy. Fixed.

    – Littlefoot
    Dec 31 '18 at 14:34














  • 1





    Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

    – mathguy
    Dec 31 '18 at 14:28











  • Thank you, @mathguy. Fixed.

    – Littlefoot
    Dec 31 '18 at 14:34








1




1





Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

– mathguy
Dec 31 '18 at 14:28





Note though that this solution will rewrite the string '33' as '33.' - it is not clear if that's the OP wants (or needs?) Easy fix: wrap within RTRIM(....., '.')

– mathguy
Dec 31 '18 at 14:28













Thank you, @mathguy. Fixed.

– Littlefoot
Dec 31 '18 at 14:34





Thank you, @mathguy. Fixed.

– Littlefoot
Dec 31 '18 at 14:34




















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