sql - SQL中的整数到位

Question

我有一个 Integer字段，我需要把它分成 Bits to the SQL(Firebird) . Integer 字段的每个字节都应该是一个新字段。例如:

Integer field: 7 = 00000111

Bit 1 field1: 1  
Bit 2 field2: 1  
Bit 3 field3: 1  
Bit 4 Field4: 0
Bit 5 Field5: 0
Bit 6 Field6: 0
Bit 7 Field7: 0
Bit 8 Field8: 0

有人知道如何在 Firebird 中做到这一点吗？

Answer 1

使用 BIN_AND 功能:

SELECT 
   bin_and(field, 1) as bit1, 
   bin_and(field, 2) as bit2, 
   bin_and(field, 4) as bit3,
   bin_and(field, 8) as bit4,
   ... 
FROM T