MySQL update with avg for different periods
I was hoping I could bake these 3 update queries into one efficient and beautiful query that would update my price table. I know some of you may wonder why I'm even doing this update and not just doing my avg on the fly when I want the data, you can keep wondering.
Query #1 updates the price table with the average price for a pricegroup within 12 months.
Query #2 updates the price table with the average price for a pricegroup within 6 months.
Query #3 updates the price table with the average price for a pricegroup within 3 months.
SET
@p12 = '2017-12-01',
@p6 = '2018-06-01',
@p3 = '2018-09-01',
@p1 = '2019-12-01';
/* AVG PRICE 12 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p12 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_12 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 6 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p6 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_6 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 3 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p3 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_3 = a.avg_price
WHERE
prices.`date` = @p1;
---- Price table ----
| id | product_id | date | price | price_3 | price_6 | price_12 |
---- Product table ----
| id | pricegroup |
---- Prices_temp table ----
| pricegroup | sales_date | price |
mysql
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
add a comment |
I was hoping I could bake these 3 update queries into one efficient and beautiful query that would update my price table. I know some of you may wonder why I'm even doing this update and not just doing my avg on the fly when I want the data, you can keep wondering.
Query #1 updates the price table with the average price for a pricegroup within 12 months.
Query #2 updates the price table with the average price for a pricegroup within 6 months.
Query #3 updates the price table with the average price for a pricegroup within 3 months.
SET
@p12 = '2017-12-01',
@p6 = '2018-06-01',
@p3 = '2018-09-01',
@p1 = '2019-12-01';
/* AVG PRICE 12 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p12 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_12 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 6 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p6 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_6 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 3 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p3 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_3 = a.avg_price
WHERE
prices.`date` = @p1;
---- Price table ----
| id | product_id | date | price | price_3 | price_6 | price_12 |
---- Product table ----
| id | pricegroup |
---- Prices_temp table ----
| pricegroup | sales_date | price |
mysql
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
1
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53
add a comment |
I was hoping I could bake these 3 update queries into one efficient and beautiful query that would update my price table. I know some of you may wonder why I'm even doing this update and not just doing my avg on the fly when I want the data, you can keep wondering.
Query #1 updates the price table with the average price for a pricegroup within 12 months.
Query #2 updates the price table with the average price for a pricegroup within 6 months.
Query #3 updates the price table with the average price for a pricegroup within 3 months.
SET
@p12 = '2017-12-01',
@p6 = '2018-06-01',
@p3 = '2018-09-01',
@p1 = '2019-12-01';
/* AVG PRICE 12 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p12 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_12 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 6 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p6 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_6 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 3 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p3 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_3 = a.avg_price
WHERE
prices.`date` = @p1;
---- Price table ----
| id | product_id | date | price | price_3 | price_6 | price_12 |
---- Product table ----
| id | pricegroup |
---- Prices_temp table ----
| pricegroup | sales_date | price |
mysql
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
I was hoping I could bake these 3 update queries into one efficient and beautiful query that would update my price table. I know some of you may wonder why I'm even doing this update and not just doing my avg on the fly when I want the data, you can keep wondering.
Query #1 updates the price table with the average price for a pricegroup within 12 months.
Query #2 updates the price table with the average price for a pricegroup within 6 months.
Query #3 updates the price table with the average price for a pricegroup within 3 months.
SET
@p12 = '2017-12-01',
@p6 = '2018-06-01',
@p3 = '2018-09-01',
@p1 = '2019-12-01';
/* AVG PRICE 12 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p12 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_12 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 6 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p6 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_6 = a.avg_price
WHERE
prices.`date` = @p1;
/* AVG PRICE 3 MONTHS */
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
AVG( price ) as avg_price
FROM
price_temp
WHERE
sales_date BETWEEN @p3 AND @p1
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price_3 = a.avg_price
WHERE
prices.`date` = @p1;
---- Price table ----
| id | product_id | date | price | price_3 | price_6 | price_12 |
---- Product table ----
| id | pricegroup |
---- Prices_temp table ----
| pricegroup | sales_date | price |
mysql
mysql
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
asked Nov 15 '18 at 13:04
PatrickPatrick
20829
20829
1
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53
add a comment |
1
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53
1
1
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53
add a comment |
1 Answer
1
active
oldest
votes
So after looking at cases I remade the query and used cases within the AVG
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
avg(CASE WHEN sales_date = @p1 THEN price END) as p1,
avg(CASE WHEN sales_date BETWEEN @p3 AND @p1 THEN price END) as p3,
avg(CASE WHEN sales_date BETWEEN @p6 AND @p1 THEN price END) as p6,
avg(CASE WHEN sales_date BETWEEN @p12 AND @p1 THEN price END) as p12
FROM
price_temp
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price = IF(a.p1 IS NULL, 0, a.p1),
prices.price_3 = IF(a.p3 IS NULL, 0, a.p3),
prices.price_6 = IF(a.p6 IS NULL, 0, a.p6),
prices.price_12 = IF(a.p12 IS NULL, 0, a.p12)
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
add a comment |
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votes
So after looking at cases I remade the query and used cases within the AVG
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
avg(CASE WHEN sales_date = @p1 THEN price END) as p1,
avg(CASE WHEN sales_date BETWEEN @p3 AND @p1 THEN price END) as p3,
avg(CASE WHEN sales_date BETWEEN @p6 AND @p1 THEN price END) as p6,
avg(CASE WHEN sales_date BETWEEN @p12 AND @p1 THEN price END) as p12
FROM
price_temp
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price = IF(a.p1 IS NULL, 0, a.p1),
prices.price_3 = IF(a.p3 IS NULL, 0, a.p3),
prices.price_6 = IF(a.p6 IS NULL, 0, a.p6),
prices.price_12 = IF(a.p12 IS NULL, 0, a.p12)
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
add a comment |
So after looking at cases I remade the query and used cases within the AVG
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
avg(CASE WHEN sales_date = @p1 THEN price END) as p1,
avg(CASE WHEN sales_date BETWEEN @p3 AND @p1 THEN price END) as p3,
avg(CASE WHEN sales_date BETWEEN @p6 AND @p1 THEN price END) as p6,
avg(CASE WHEN sales_date BETWEEN @p12 AND @p1 THEN price END) as p12
FROM
price_temp
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price = IF(a.p1 IS NULL, 0, a.p1),
prices.price_3 = IF(a.p3 IS NULL, 0, a.p3),
prices.price_6 = IF(a.p6 IS NULL, 0, a.p6),
prices.price_12 = IF(a.p12 IS NULL, 0, a.p12)
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
add a comment |
So after looking at cases I remade the query and used cases within the AVG
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
avg(CASE WHEN sales_date = @p1 THEN price END) as p1,
avg(CASE WHEN sales_date BETWEEN @p3 AND @p1 THEN price END) as p3,
avg(CASE WHEN sales_date BETWEEN @p6 AND @p1 THEN price END) as p6,
avg(CASE WHEN sales_date BETWEEN @p12 AND @p1 THEN price END) as p12
FROM
price_temp
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price = IF(a.p1 IS NULL, 0, a.p1),
prices.price_3 = IF(a.p3 IS NULL, 0, a.p3),
prices.price_6 = IF(a.p6 IS NULL, 0, a.p6),
prices.price_12 = IF(a.p12 IS NULL, 0, a.p12)
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
So after looking at cases I remade the query and used cases within the AVG
UPDATE
prices
JOIN product ON
product.id = prices.product_id
JOIN(
SELECT
pricegroup,
avg(CASE WHEN sales_date = @p1 THEN price END) as p1,
avg(CASE WHEN sales_date BETWEEN @p3 AND @p1 THEN price END) as p3,
avg(CASE WHEN sales_date BETWEEN @p6 AND @p1 THEN price END) as p6,
avg(CASE WHEN sales_date BETWEEN @p12 AND @p1 THEN price END) as p12
FROM
price_temp
GROUP BY
pricegroup
) as a ON
a.pricegroup = product.pricegroup
SET
prices.price = IF(a.p1 IS NULL, 0, a.p1),
prices.price_3 = IF(a.p3 IS NULL, 0, a.p3),
prices.price_6 = IF(a.p6 IS NULL, 0, a.p6),
prices.price_12 = IF(a.p12 IS NULL, 0, a.p12)
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
answered Nov 23 '18 at 16:24
PatrickPatrick
20829
20829
add a comment |
add a comment |
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1
Check w3schools.com/sql/func_mysql_case.asp
– J. Almandos
Nov 15 '18 at 13:13
So something like "avg(CASE WHEN sales_date BETWEEN p3 AND p1 THEN price END) as avg_p3"
– Patrick
Nov 15 '18 at 14:53