Question

我下面有两个子查询来获取同一列的总数。现在，我要获取的是我使用的两个子查询的总数。我该怎么办？

Subquery1

(select sum(aila.total_rec_tax_amount)
from ap_invoice_lines_all aila
where aila.invoice_id = aia.invoice_id
and aila.line_type_lookup_code = 'ITEM'
and aila.tax_classification_code = 'VAT12 SERVICES' 
group by aila.invoice_id) as total_tax_charged1

Subquery2

(select sum(aila.total_rec_tax_amount)
from ap_invoice_lines_all aila
where aila.invoice_id = aia.invoice_id
and aila.line_type_lookup_code = 'ITEM'
and aila.tax_classification_code = 'VAT12 GOODS'
group by aila.invoice_id) as total_tax_charged2

Answer 1

您可以使用“全部并集”，然后计算总和：

select sum( as total_tax_charged)
from(
  select sum(aila.total_rec_tax_amount) as total_tax_charged
  from ap_invoice_lines_all aila
  where aila.invoice_id = aia.invoice_id
  and aila.line_type_lookup_code = 'ITEM'
  and aila.tax_classification_code = 'VAT12 SERVICES' 
  group by aila.invoice_id 
Union all
  select sum(aila.total_rec_tax_amount)
  from ap_invoice_lines_all aila
  where aila.invoice_id = aia.invoice_id
  and aila.line_type_lookup_code = 'ITEM'
  and aila.tax_classification_code = 'VAT12 GOODS'
  group by aila.invoice_id
)

您也可以使用一个选择语句来完成

select sum(aila.total_rec_tax_amount)
from ap_invoice_lines_all aila
where aila.invoice_id = aia.invoice_id
and aila.line_type_lookup_code = 'ITEM'
and aila.tax_classification_code in( 'VAT12 SERVICES', 'VAT12 GOODS')
group by aila.invoice_id

PL / SQL查询以获取子查询中两列的总和

1 个答案: