Question

每当我尝试这段代码时，我都会遇到这个令人讨厌的错误：

 select 
    gam.acid,
        gam.foracid,
        gam.acct_name,
        gam.sol_id,
        sol.sol_desc,
        gam.gl_sub_head_code,
        case gsh.gl_code
             when cast(gl_code as int) >= 01 and cast(gl_code as int) <=13
                      or cast(gl_code as int) >= 15 and cast(gl_code as int) <=24 then 'A'
                 when cast(gl_code as int) >= 28 and cast(gl_code as int) <= 31
                     or cast(gl_code as int) >= 33 and cast(gl_code as int) <= 39
                     or cast(gl_code as int) = 41
                     or cast(gl_code as int) >= 43 and cast(gl_code as int) <= 48 then 'L'
                 when cast(gl_code as int) = 51
                     or cast(gl_code as int) = 53
                     or cast(gl_code as int) >= 55 and cast(gl_code as int) <= 57 then 'C'
                 when cast(gl_code as int) >= 61 and cast(gl_code as int) <= 70
                     or cast(gl_code as int) >= 72 and cast(gl_code as int) <= 81 then 'I'
                 when cast(gl_code as int) = 84 or cast(gl_code as int) = 85
                     or cast(gl_code as int) >= 87 and cast(gl_code as int) <= 94 then 'E'
                 when cast(gl_code as int) >= 97 and cast(gl_code as int) <= 99 then 'S'
                 else null
          end as gl_classification
    from tbaadm.gam

我觉得代码中有些东西不合适，或者我忘了做/添加一些东西。任何帮助将不胜感激。

Answer 1

CASE construct有两种替代语法：

CASE foo WHEN 1 THEN 'blah' END
CASE WHEN foo=1 THEN 'blah' END

你试图同时使用两者：

case gsh.gl_code
when cast(gl_code as int) >= 01

应该是：

  select case
         --gsh.gl_code  remove this 
            when cast(gl_code as int) >= 01 and cast(gl_code as int) <=13
                or cast(gl_code as int) >= 15 and cast(gl_code as int) <=24 then 'A'
            when cast(gl_code as int) >= 28 and cast(gl_code as int) <= 31
                or cast(gl_code as int) >= 33 and cast(gl_code as int) <= 39
                or cast(gl_code as int) = 41
                or cast(gl_code as int) >= 43 and cast(gl_code as int) <= 48 then 'L'
            when cast(gl_code as int) = 51
                or cast(gl_code as int) = 53
                or cast(gl_code as int) >= 55 and cast(gl_code as int) <= 57 then 'C'
            when cast(gl_code as int) >= 61 and cast(gl_code as int) <= 70
                or cast(gl_code as int) >= 72 and cast(gl_code as int) <= 81 then 'I'
            when cast(gl_code as int) = 84 or cast(gl_code as int) = 85
                or cast(gl_code as int) >= 87 and cast(gl_code as int) <= 94 then 'E'
            when cast(gl_code as int) >= 97 and cast(gl_code as int) <= 99 then 'S'
            else null
        end as gl_classification
   from tbaadm.gam

Answer 2

您可以尝试使用括号来优先考虑AND / OR条件。例如：

when (cast(gl_code as int) >= 01 and cast(gl_code as int) <=13)
    or (cast(gl_code as int) >= 15 and cast(gl_code as int) <=24) then 'A'

它可能有帮助...

ORA-00905：缺少关键字错误

2 个答案: