Question

这是数据的外观，这里是

"ID"    "ACTIVE"    "SERVICEID" "MONTH" "D1"    "D2"    "D3"    "D4"    "D5"    "D6"    "D7"    "D8"    "D9"    "D10"   "D11"   "D12"   "D13"   "D14"   "D15"   "D16"   "D17"   "D18"   "D19"   "D20"   "D21"   "D22"   "D23"   "D24"   "D25"   "D26"   "D27"   "D28"   "D29"   "D30"   "D31"   
352917  1   "FEUSA0001U"    199603                                              24.48   23.76   24.24   24.82           24.84   25.24   25  25  25.5            25.76   25.88   25.62   25.24   25.62               
353793  1   "FEUSA00024"    199603                                              14.92   14.77   14.8    14.78           14.57   14.75   14.75   14.75   14.75           14.75   14.75   14.56   14.56   14.69               
377994  1   "FEUSA0001X"    199603                                              59.16   58.84   59.12   59.92           59.72   60  60  61.52   61.24           61.76   61.76   62.24   62.24   62.76               
377737  1   "FEUSA00026"    199603                                                   9.89   9.9 10.01           10.01   10.12   10.12   10.25   10.25           10.25   10.25   10.25   10.25   10.25

因此，对于第一条记录，我需要返回第一个非零/非空为D6或6，而对于最后一条记录，非零/非空值应为D20或20。

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这是表格的DDL

CREATE TABLE "SERV" (
     "ID"           NUMBER,
     "ACTIVE"       NUMBER,
     "SERVICEID"    VARCHAR2(10 BYTE),
     "MONTH"        NUMBER(*,0),
     "D1"           NUMBER,
     "D2"           NUMBER,
     "D3"           NUMBER,
     "D4"           NUMBER,
     "D5"           NUMBER,
     "D6"           NUMBER,
     "D7"           NUMBER,
     "D8"           NUMBER,
     "D9"           NUMBER,
     "D10"          NUMBER,
     "D11"          NUMBER,
     "D12"          NUMBER,
     "D13"          NUMBER,
     "D14"          NUMBER,
     "D15"          NUMBER,
     "D16"          NUMBER,
     "D17"          NUMBER,
     "D18"          NUMBER,
     "D19"          NUMBER,
     "D20"          NUMBER,
     "D21"          NUMBER,
     "D22"          NUMBER,
     "D23"          NUMBER,
     "D24"          NUMBER,
     "D25"          NUMBER,
     "D26"          NUMBER,
     "D27"          NUMBER,
     "D28"          NUMBER,
     "D29"          NUMBER,
     "D30"          NUMBER,
     "D31"          NUMBER
)

DML样本记录

Insert into SERV (ID,ACTIVE,SERVICEID,MONTH,D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31) values (352917,1,'FEUSA0001U',199603,null,null,null,null,null,null,null,null,null,null,null,24.48,23.76,24.24,24.82,null,null,24.84,25.24,25,25,25.5,null,null,25.76,25.88,25.62,25.24,25.62,null,null);
Insert into SERV (ID,ACTIVE,SERVICEID,MONTH,D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31) values (353793,1,'FEUSA00024',199603,null,null,null,null,null,null,null,null,null,null,null,14.92,14.77,14.8,14.78,null,null,14.57,14.75,14.75,14.75,14.75,null,null,14.75,14.75,14.56,14.56,14.69,null,null);
Insert into SERV (ID,ACTIVE,SERVICEID,MONTH,D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31) values (377994,1,'FEUSA0001X',199603,null,null,null,null,null,null,null,null,null,null,null,59.16,58.84,59.12,59.92,null,null,59.72,60,60,61.52,61.24,null,null,61.76,61.76,62.24,62.24,62.76,null,null);
Insert into SERV (ID,ACTIVE,SERVICEID,MONTH,D1,D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31) values (377737,1,'FEUSA00026',199603,null,null,null,null,null,null,null,null,null,null,null,9.95,9.89,9.9,10.01,null,null,10.01,10.12,10.12,10.25,10.25,null,null,10.25,10.25,10.25,10.25,10.25,null,null);

Answer 1

您的数据格式非常糟糕。通常，具有仅由数字区分的列是不好的标志。更好的结构是每个值一行，而不是一列。

你可以使用巨大的案例表达来做你想做的事情：

call

Answer 2

试试这个：

SELECT ID,
       ACTIVE,
       SERVICEID,
       MONTH,
       COALESCE(D1, D2,D3,D4,D5,D6,D7,D8,D9,D10,D11,D12,D13,D14,D15,D16,D17,D18,D19,D20,D21,D22,D23,D24,D25,D26,D27,D28,D29,D30,D31) FIRST_NOTNULL,
       COALESCE(D31, D30,D29,D28,D27,D26,D25,D24,D23,D22,D21,D20,D19,D18,D17,D16,D15,D14,D13,D12,D11,D10,D9,D8,D7,D6,D5,D4,D3,D2,D1) LAST_NOTNULL
  FROM SERV

问候！

如何使用oracle sql获取多列中的第一个非零/非空值和最后一个零/非空值

2 个答案: