Group by month in SQLite

Question

I have an SQLite database which contains transactions, each of them having a price and a transDate.

I want to retrieve the sum of the transactions grouped by month. The retrieved records should be like the following:

Price    month 230        2 500        3 400        4 

Answer 1

it is always good while you group by MONTH it should check YEAR also

select SUM(transaction) as Price,         DATE_FORMAT(transDate, "%m-%Y") as 'month-year'         from transaction group by DATE_FORMAT(transDate, "%m-%Y"); 

FOR SQLITE

select SUM(transaction) as Price,         strftime("%m-%Y", transDate) as 'month-year'         from transaction group by strftime("%m-%Y", transDate); 

Answer 2

You can group on the start of the month:

select  date(DateColumn, 'start of month') ,       sum(TransactionValueColumn) from    YourTable group by          date(DateColumn, 'start of month')