Need to check whether first two characters of a string is Alphabets or not

Question

Hi,
Need to check whether first two characters of a string is alphabet or not.
Lets say for Ex,
String as 'DE123456' i need to check whether first  character is non-numeric and then second character as non numeric.
kindly help me on this.
                IF length(trim(p_parserec(31))) = 22 AND p_parserec(31) LIKE 'DE%'  THEN
                    AUFTRAGGEBERKONTONR := trim(p_parserec(31)) ;
                 ELSIF  (length(trim(p_parserec(31))) > 22 AND length(trim(p_parserec(31))) < 35)  AND p_parserec(31) NOT LIKE 'DE%'  THEN
                   AUFTRAGGEBERKONTONR := lpad(trim(p_parserec(31)), 34, 0) ;
                 ELSIF length(trim(p_parserec(31))) > 10 AND ascii(substr(p_parserec(31), 1, 2)) between 48 and 57 THEN
                   AUFTRAGGEBERKONTONR := lpad(trim(p_parserec(31)), 10, 0) ;
                 ELSE
                    p_errorcd   := sqlcode ;
                    p_errordata := sqlerrm ;
               END IF ;
Note : In the third else if condition the character should be greater than 10 and first 2 characters should not be alphabets.

Answer 1

Siva.V wrote:
Need to check whether first two characters of a string is alphabet or not.
To this requirement only regexp_like will work too! No need of some other string function!
Like:-
        -- in regexp_like last parameter shows to ignore case (optional).
SQL> with t as
  2  (select 'AB123456' as key from dual union all
  3  select 'CD234567' from dual union all
  4  select 'A1234567' from dual union all
  5  select 'A52H4341' from dual union all
  6  select 'Dk274341' from dual union all
  7  select 'DE234556' from dual)
  8  select key
  9  from t
10  where regexp_like(key,'^[A-Z]{2}','i') -- even '^[[:alpha:]]{2}' or '^\D{2}' pattern can be replaced for same result..
  11  /
KEY
AB123456
CD234567
Dk274341
DE234556
Thanks!