使用CTE结果添加额外的行至选择

Question

请在下面找到我的选择。这个选择的结果如下：

fecha1   columna_1  columna_2 
09.07.2014  10.00000000  3.00000000 
10.07.2014  12.20000000  5.06000000 
11.07.2014  15.56600000  9.26240000 
12.07.2014  20.18864000  27.35320192 
15.07.2014  28.60184480  22.85988716 

我的问题是：我想添加额外的行到下面的选择结果。该行应包括：

fecha1 =有一天，第一天之前在 “fecha1” 列

columna_1 = 0

columna_2 = 0

我能做到这一点表示？

这是实际的选择：

---

DECLARE @sales TABLE 
(codigo VARCHAR(10) NOT NULL, 
fecha DATE NOT NULL, 
diferencia NUMERIC(10, 2) NOT NULL); 

INSERT INTO @sales(codigo, fecha, diferencia) 
VALUES ('q', '20140708', 51), 
('q', '20140712', 0.03), 
('q', '20140712', 0.033), 
('q', '20140712', 0.04), 
('q', '20140811', 0.03), 
('q', '20140812', 0.01), 
('q', '20140815', 0.05), 
('q', '20140815', 0.06), 
('q', '20140815', 0.02), 
('q', '20140114', 0.07), 
('q', '20140714', 0.024), 
('q', '20140714', 0.024), 
('x', '20140709', 0.025), 
('x', '20140710', 0.016), 
('x', '20140711', 0.036), 
('x', '20140712', 0.023), 
('x', '20140712', 0.035), 
('x', '20140715', 0.057), 
('c', '20140709', 0.097), 
('c', '20140710', 0.0197), 
('c', '20140711', 0.0297), 
('c', '20140712', 0.0397), 
('c', '20140715', 0.071); 


;with ctesource as 
(
    select 
     codigo,diferencia, 
     fecha, 
     sum(log(1e0 + diferencia)) over (partition by codigo order by fecha rows unbounded preceding) as LogAssetValue 
    from 
     @sales 
     WHERE codigo IN ('c', 'x') and fecha > DATEADD(month, -24, getdate()) 
) 
select convert(varchar, fecha, 104) AS fecha1, 
CAST(SUM(Case codigo when 'c' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_1, 
CAST(SUM(Case codigo when 'x' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_2 
from ctesource 
GROUP BY fecha 
order by fecha; 

非常感谢!!!!!!

Answer 1

在SQL Server中使用varchar时总是包含一个长度。一种方法做你想要的是union all：

(select convert(varchar(255), fecha, 104) AS fecha1, 
     CAST(SUM(Case codigo when 'c' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_1, 
     CAST(SUM(Case codigo when 'x' then (exp(LogAssetValue)-1)*100 ELSE 0 END) AS numeric(16, 8)) as columna_2 
from ctesource 
GROUP BY fecha 
) union all 
(select convert(varchar(255), dateadd(-1, day, min(fecha)), 104), 
     0, 0 
from ctesource 
) 
order by fecha1;