I got this table named tb_stock
ID AMOUNT FLAG LAST_AMOUNT
1 5 N 0
2 0 Y 8
3 0 Y 7
4 6 N 0
Right now i want to sum the value based on the FLAG value. For example if the FLAG values is N, it will sum from the AMOUNT field and if the FLAG value is Y, it will sum from the LAST_AMOUNT field.
So the total amount would be 26 (5 + 8 + 7 + 6).
Is this can be achieve with just use mysql or it will involve php as well?
Thanks.
SELECT SUM(CASE WHEN FLAG = 'Y' THEN LAST_AMOUNT ELSE AMOUNT END) AS TOTAL
FROM tb_stock
this is an example using IF
statement
SELECT SUM(IF(`flag`='y', last_amount, amount))
FROM example_table
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.