I am looking for the funtion in Db2 which is equivalent to INSTR() funtion
in Oracle.So far i have looked at funtions "LOCATE" and "POSSTR" in DB2
which provide similar but LESS funtionality than INSTR() in Oracle.I am
using DB2 8.0 .Any help will be greatly apprecitaed.

the INSTR() funtion in Oracle does the following thing ----

instr (string1, string2, [start_position], [nth_appearance])

string1 is the string to search.

string2 is the substring to search for in string1.

start_position is the position in string1 where the search will start. This
argument is optional. If omitted, it defaults to 1. The first position in
the string is 1. If the start_position is negative, the function counts back
start_position number of characters from the end of string1 and then
searches towards the beginning of string1.

nth_appearance is the nth appearance of string2. This is optional. If
omiited, it defaults to 1.

There is no equivalent built in function in DB2 for LUW.

Andy

The only missing pieces are the "n-th appearance" and negative start positions... You can easily implement both in a SQL-bodied function or recursive query.

Thank u. I used cast(?,varchar(255)) and it worked.

one of the column in table called reports in db2 database was changed from organization_sequence_bigint to organization_sequence_number.
therfore the queries which access this table reports is giving the following error.

10:03:03 [SELECT - 0 row(s), 1.371 secs] [Error Code: -668, SQL State: 57016] Operation not allowed for reason code "7" on table "DASUSR1.REPORTS".

What is the problem?

Have a look at error message SQL0668, which reads: