数据字典的QUAN, DEC类型与ABAP P型转换

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Dictionary type→ABAP type

When you refer to data tpes from the ABAP Dictionary in an ABAP program, the predefined Dictionary types are converted to ABAP types as follows:

转换公式 (n+1)/2 

比如DEC定义为13位，其中3位小数 

则ABAP的对应P型应该定义为 (13+1)/2 = 7 

data: p(7) type p decimals 3.