SQLite Select where where clause

Question

我被查询困住了。基本上，我想根据两个条款，然后得到两个相同领域的结果。 sum（field1）when（ins_n = 0）和sum（field1）when（ins_n = 1）。我希望我解释一下。现在，我只能这样做时（ins_n = 0）

"SELECT " + 
"SUM(field1) AS incasso1, " +     
"FROM Movimentinegozio WHERE ins_n = 0 "; 

Answer 1

您可以使用SUM和CASE：如果您需要产生两行使用

SELECT SUM(CASE WHEN ins_n = 0 THEN field1 END) AS incasso0, 
     SUM(CASE WHEN ins_n = 1 THEN field1 END) AS incasso1 
FROM Movimentinegozio 
WHERE ins_n IN (0, 1); 

SqlFiddleDemo

@Marc B建议：

SELECT ins_n, SUM(field1) AS incasso 
FROM Movimentinegozio 
WHERE ins_n IN (0, 1) 
GROUP BY ins_n 

SqlFiddleDemo2