I'm joining 3 tables:
SELECT
catalog_product_entity.entity_id AS product_id,
catalog_product_entity.sku,
customer_entity_varchar.entity_id AS customer_id,
customer_entity_varchar.value,
customer_entity_varchar.attribute_id,
import_tmp.customer,
import_tmp.grp,
import_tmp.qty,
import_tmp.price
FROM catalog_product_entity
INNER JOIN import_tmp
ON catalog_product_entity.sku = import_tmp.sku
INNER JOIN customer_entity_varchar
ON import_tmp.customer = customer_entity_varchar.value OR import_tmp.grp = customer_entity_varchar.value
WHERE customer_entity_varchar.attribute_id = 139 OR customer_entity_varchar.attribute_id = 140
Currently, I'm fetching the data, build a new array and insert it into my final table.
INSERT INTO final_table(`c_id`, `p_id`, `price`) VALUES (customer_id, product_id, price);
However, I wonder if it's possible to do this in one go, so basically directly from the temporary table?
Yes. Use INSERT. . . SELECT
INSERT. . . SELECT
INSERT. . . SELECT
:
INSERT INTO final_table (c_id, p_i`, price)
SELECT cev.entity_id AS customer_id,
cpe.entity_id AS product_id,
it.price
FROM catalog_product_entity cpe JOIN
import_tmp it
ON cpe.sku = it.sku JOIN
customer_entity_varchar cev
ON cev.value IN (it.customer, it.grp)
WHERE cev.attribute_id IN (139, 140);
Note that I introduced table aliases. These make the query easier to write and to read. And IN
is easier to follow than repeated OR
conditions.
INSERT INTO final_table(`c_id`, `p_id`, `price`)
SELECT
customer_entity_varchar.entity_id AS customer_id,
catalog_product_entity.entity_id AS product_id,
import_tmp.price
FROM catalog_product_entity
INNER JOIN import_tmp
ON catalog_product_entity.sku = import_tmp.sku
INNER JOIN customer_entity_varchar
ON import_tmp.customer = customer_entity_varchar.value OR import_tmp.grp = customer_entity_varchar.value
WHERE customer_entity_varchar.attribute_id = 139 OR customer_entity_varchar.attribute_id = 140
Above code will do that. Just select to rows you want to insert into final_table.
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