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oracle/tpt/bitmask.sql
2026-03-12 21:23:47 +01:00

16 lines
611 B
MySQL

-- Copyright 2018 Tanel Poder. All rights reserved. More info at http://tanelpoder.com
-- Licensed under the Apache License, Version 2.0. See LICENSE.txt for terms & conditions.
select
level - 1 bit
,DECODE(bitand(to_number('&1','XXXXXXXXXXXXXXXX'),power(2,level-1)),0,0,1) is_set
,to_char(power(2,level-1),'XXXXXXXXXXXXXXXX') val_hex
,bitand(to_number('&1','XXXXXXXXXXXXXXXX'),power(2,level-1)) val_dec
from
dual
where
DECODE(bitand(to_number('&1','XXXXXXXXXXXXXXXX'),power(2,level-1)),0,0,1) != 0
connect by
level <= (select log(2,to_number('&1','XXXXXXXXXXXXXXXX'))+2 from dual)
/