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9.1

How to compare number and varchar?

Asked by JelaV in Oracle HCM

Tags: plsq, oracle, sql

Hi - I have  table 'a' with a NUMBER column (col1) that is of course always digits.  The other table 'b' has the same column (col1) that is VARCHAR2 of 10 chars.  
The b.col1 could be: '',  '  ', 'abc', '1234', '02345'...
The a.col1 could be:  1234, 0123, 02345.....

I need to select from these two tables where a.col1 = b.col1:
 select * from a, b where a.col1= b.col1

1. If I use to_char(a.col1) it would give me 2345 instead of 02345.
    So select * from a, b where to_char(a.col1)= trim(b.col1) would not return what I   want

2. select * from a, b where a.col1= trim(b.col1) would return the error invalid number as
    'abs' is not a number.

So I do need to get  only numbers from the columns b.col1.
Any solution?

 

[+][-]05/02/09 11:53 PM, ID: 24288921Expert Comment

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[+][-]05/04/09 12:05 AM, ID: 24292982Author Comment

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[+][-]05/04/09 12:40 AM, ID: 24293098Accepted Solution

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About this solution

Zone: Oracle HCM
Tags: plsq, oracle, sql
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Solution Provided By: angelIII
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