Question

Error translated from Portuguese to English: “Error data conversion or data format conversion.”

I have created a view:

MNUM DECIMAL 8,0                                


create view db.abc as select * from x where decimal(SUBSTR(MNUM, 2,6), 6, 0) = 57092

the mnum looks like 1057092 in this example, SUBSTR(MNUM, 2,6)=057092 and decimal(SUBSTR(MNUM, 2,6), 6, 0) should be = 57092 but throws that error!

thanks for any help

Answer 1

You can use the MOD function to get a part of the number instead of struggling with the char and numeric operations

select decimal(SUBSTR(12345678, 2,6), 6, 0)
from sysibm.sysdummy1;
--returns 234567

select mod(12345678 / 10, 1000000)
from sysibm.sysdummy1;
--returns 234567

They return the same result, but the last one can be applied for number operations only. And, if you wat to secure your number to a decimal with 6 places, you can do this (if your DB2 version allows it):

select digits(dec(mod(12345678 / 10, 1000000), 6))
from sysibm.sysdummy1;

Just to be sure that your operation can work, you should evaluate if the MNUM value is not null:

digits(dec(mod(COALESCE(MNUM, 0) / 10, 1000000), 6))