Question

我有一个包含列的表：

date_report    entity      value     code_column
12/02/2014       10         0.5       1
12/02/2014       10         333       2
12/02/2014       10         -44       3
12/02/2014       11         0.3       1    
12/02/2014       14         0.5       1
12/02/2014       11         777       2    
12/02/2014       14         -4        3
12/03/2015       10         0.4       1
12/03/2015       15         432       2  
10/01/2014       12         555       2

我希望将行转换为列，当＆＃34; date_report＆＃34;和＆＃34;实体＆＃34;就像一个键（它们仍然存在），code_column转换为新列的名称，值是新列中的值。像：

date_report     entity       A         B       C
12/02/2014       10         0.5       333     -44
12/02/2014       11         0.3       777     
12/02/2014       14         0.5                -4
12/03/2015       10         0.4       
12/03/2015       15                   432
10/01/2014       12                   555

Answer 1

您可以使用条件聚合：

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Answer 2

您可以尝试这样：

WITH TB_TAM AS(
  SELECT '12/02/2014' date_report,       10 entity,        0.5 valueT,      1 code_column  FROM DUAL UNION ALL
  SELECT '12/02/2014' date_report ,       10 entity,        333 valueT,      2 code_column FROM DUAL UNION ALL
  SELECT '12/02/2014' date_report ,       10 entity,        -44 valueT,      3 code_column FROM DUAL UNION ALL
  SELECT '12/02/2014' date_report ,       11 entity,        0.3 valueT,      1 code_column  FROM DUAL UNION ALL   
  SELECT '12/02/2014' date_report ,       14 entity,        0.5 valueT,      1 code_column  FROM DUAL UNION ALL
  SELECT '12/02/2014' date_report ,       11 entity,        777 valueT,      2  code_column  FROM DUAL UNION ALL  
  SELECT '12/02/2014' date_report ,       14 entity,        -4  valueT,      3 code_column FROM DUAL UNION ALL
  SELECT '12/03/2015' date_report ,       10 entity,        0.4 valueT,      1 code_column FROM DUAL UNION ALL
  SELECT '12/03/2015' date_report ,       15 entity,        432 valueT,      2  code_column  FROM DUAL UNION ALL
  SELECT '10/01/2014' date_report ,       12 entity,        555 valueT,      2 code_column  FROM DUAL 
)
select * from TB_TAM
PIVOT ( sum(valueT)for code_column in (1 as a,2 as b,3 as c)) 
order by date_report,entity

按2列旋转

2 个答案: