[ 
http://issues.apache.org/jira/browse/DERBY-1262?page=comments#action_12414035 ] 

Bernt M. Johnsen commented on DERBY-1262:
-----------------------------------------

Isn't it somewhat dnagerous to use tab-cahacters in strings in 
dynamicLikeOptimization.sql since it seems to me that Derby developers converts 
tabs to spaces and vice versa almost at will?

> Like-predicates: % does not match tab character
> -----------------------------------------------
>
>          Key: DERBY-1262
>          URL: http://issues.apache.org/jira/browse/DERBY-1262
>      Project: Derby
>         Type: Bug

>   Components: SQL
>     Versions: 10.0.2.0
>  Environment: Embedded, Solaris 10 x86
>     Reporter: Øystein Grøvlen
>  Attachments: 1262.diff, 1262_3.diff
>
> % in like predicates does not seem to match tab character.  In the following 
> example all whitespace in character literals is the tab character:
> ij> create table t4(i integer primary key, j integer, c varchar(10));
> 0 rows inserted/updated/deleted
> ij> insert into t4 values (1, 1, 'abc def');
> 1 row inserted/updated/deleted
> ij> select * from t4 where c like 'abc%';
> I          |J          |C         
> ----------------------------------
> 0 rows selected
> ij> select * from t4 where c like 'abc        %';
> I          |J          |C         
> ----------------------------------
> 1          |1          |abc    def   
> 1 row selected

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