SUM和IF混合用法

格式：IF(Condition,A,B)

意义：当Condition为TRUE时，返回A；当Condition为FALSE时，返回B。

作用：作为条件语句使用。

例子

SELECT

d.item_variation_sku AS SKU,

SUM(

IF(

d.add_time BETWEEN '2017-03-01' AND '2017-03-04',

d.item_amount,

0

)

) AS sku_count,

SUM(

IF(

d.add_time BETWEEN '2017-02-27' AND '2017-03-01',

d.item_amount,

0

)

) AS compare_sku_count,

ROUND(

SUM(

IF(

d.add_time BETWEEN '2017-03-01' AND '2017-03-04',

d.item_amount * d.item_price_after_discount / d.local_rite,

0

)

),

2

) AS Money,

ROUND(

SUM(

IF(

d.add_time BETWEEN '2017-02-27' AND '2017-03-01',

d.item_amount * d.item_price_after_discount / d.local_rite,

0

)

),

2

) AS Compare_Money,

SUM(

IF(

d.add_time BETWEEN '2017-03-01' AND '2017-03-04',

d.item_amount,

0

)

) - SUM(

IF(

d.add_time BETWEEN '2017-02-27' AND '2017-03-01',

d.item_amount,

0

)

) AS diff_sku_count,

ROUND(

SUM(

IF(

d.add_time BETWEEN '2017-03-01' AND '2017-03-04',

d.item_amount * d.item_price_after_discount / d.local_rite,

0

)

),

2

) - ROUND(

SUM(

IF(

d.add_time BETWEEN '2017-02-27' AND '2017-03-01',

d.item_amount * d.item_price_after_discount / d.local_rite,

0

)

),

2

) AS diff_money

FROM

(

SELECT

id,

order_table_id,

`item_variation_sku`,

item_amount,

item_price_after_discount,

`local_rite`,

`add_time`

FROM

orders_detail1702

UNION ALL

SELECT

id,

order_table_id,

`item_variation_sku`,

item_amount,

item_price_after_discount,

`local_rite`,

`add_time`

FROM

orders_detail1703

) AS d,

(

SELECT

id,

account_id

FROM

orders_table1702

UNION ALL

SELECT

id,

account_id

FROM

orders_table1703

) AS t,

shopee_admin.accounts AS a

WHERE

d.order_table_id = t.id AND t.account_id = a.id AND d.add_time BETWEEN '2017-02-27' AND '2017-03-04'

GROUP BY

d.item_variation_sku