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@fujii_masao

PostgreSQLで基数変換

Posted at

10進数 → 2進数

SELECT 33::bit(16);
       bit        
------------------
 0000000000100001
(1 row)

2進数 → 10進数

SELECT '0000000000100001'::bit(16)::int;
 int4 
------
   33
(1 row)

10進数 → 16進数

SELECT to_hex(33);
 to_hex 
--------
 21
(1 row)

16進数 → 10進数

SELECT 'x0021'::bit(16)::int;
 int4 
------
   33
(1 row)
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