Question

Convert to String after rounding

Asked by: skahlert2010

Hey guys! I have a problem with my code. I need to convert the numeric result of a subquery to a string. However, since the numbers have n decimal places, I need to round the number to 2 decimals before the number to string conversion kicks in.

Can you tell me how it is possible? I got the following code below!

Thanks a lot! I appreciate your help!!!

to_char(round((count (t.int_anteil) *100)/
(select count (t.int_anteil) as Anzahl
from 
VT_TBL_PUNKT_zu_ent t,
VT_PUNKTDATEN_JOIN p,
vt_tbl_entwicklung e
where 
(p.cnt_gebiet = :P2014_CNT_GEBIET)
and (t.LNG_INV_PT_ID = p.INV_PT_ID_SUB)
and (p.str_lrt_main = :P2014_STR_LRT)
and (p.int_status_sub = 3)
and (t.lng_entwicklung = e.cnt_entwicklung)
and (p.int_be_main = :P2014_be))),3) as Percent

                                  
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Asked On
2009-11-05 at 08:01:28ID24874859
Tags

SQL

,

Oracle

Topics

SQL Query Syntax

,

Oracle 10.x

,

Oracle Database

Participating Experts
2
Points
500
Comments
9

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Answers

 

by: sdstuberPosted on 2009-11-05 at 08:35:32ID: 25751196

to_char(round(your_number,2))

 

by: sdstuberPosted on 2009-11-05 at 08:37:18ID: 25751218

or

to_char(your_number,'0.99')

 

by: sdstuberPosted on 2009-11-05 at 08:38:41ID: 25751234

the first will round then convert

so 1 will be '1',   1.2 will be '1.2'    1.23 will be '1.23'   1.235 will be '1.24'


the second will round as it converts and maintain the decimals

so 1 will be '1.00'   1.2 will be '1.20'  1.23 will be '1.23'  1.235 will be '1.24'

 

by: virdi_dsPosted on 2009-11-05 at 08:39:20ID: 25751245

Basically ,3 in last line should be inside round.
and (p.int_be_main = :P2014_be))),3) should be and (p.int_be_main = :P2014_be)),3))

Here is my code which is working fine
select to_char(round((count (t.one) *100)/
  decode(( select count (t.one) as Anzahl
    from
      one t,
      two p,
      three e
    where
      (p.two = 2)
      and (t.one = p.two)
      and (t.one = e.three)
          ),0,1)
          ,3)) as Percent
from one t
group by one

 

by: skahlert2010Posted on 2009-11-05 at 08:46:38ID: 25751336

Hey guys! Thanks for your input! I should have been more precise I guess. The problem is not to round to 2 decimals (I posted round(number,3)) instead of 2. Instead, the rounding and conversion fails and I receive an error message. Thus, the question is in which order they should be applied or how to overcome the error message and get this query to work.

 

by: sdstuberPosted on 2009-11-05 at 08:50:03ID: 25751381

what error?

 

by: skahlert2010Posted on 2009-11-05 at 08:57:04ID: 25751484

@ sdstuber

Sorry, went home and can't specify the error number or message exactly. Will post it tomorrow and try virdi_ds' point. (See code below) Nevertheless, I thought the brackets  are closed correctly in the code I posted. We'll see.

Thanks so far

 

by: skahlert2010Posted on 2009-11-05 at 23:32:11ID: 31650552

Thanks guys! I got it to work! The 3 that specifies the round function's decimal places was indeed placed at the wrong place. Like virdi_ds posted it should have been between both bracket sets to be assigned to the round function. I simply got lost with all those brackets! Especially seeing that it is just a subquery.

Good job! Thank you both!

20120131-EE-VQP-002

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