Converting Legacy SQL to Standard SQL - Enhannced Ecommerce - google-bigquery

Question

I am in no way a coder so I have tried but falling over on this.
I want to use this query from Googles Google Analytics Big Query Cookbook
Products purchased by customers who purchased product A (Enhanced Ecommerce)
I have pasted the code below
Into Standard SQL.
I have made a few attemps but am falling over and not
Thank you in advance
John
SELECT hits.product.productSKU AS other_purchased_products,
COUNT(hits.product.productSKU) AS quantity
FROM (
SELECT fullVisitorId, hits.product.productSKU, hits.eCommerceAction.action_type
FROM TABLE_DATE_RANGE([bigquery-public-data:google_analytics_sample.ga_sessions_],
TIMESTAMP('2017-04-01'), TIMESTAMP('2017-04-20'))
)
WHERE fullVisitorId IN (
SELECT fullVisitorId
FROM TABLE_DATE_RANGE([bigquery-public-data:google_analytics_sample.ga_sessions_],
TIMESTAMP('2017-04-01'), TIMESTAMP('2017-04-20'))
WHERE hits.product.productSKU CONTAINS 'GGOEYOCR077799'
AND hits.eCommerceAction.action_type = '6'
GROUP BY fullVisitorId
)
AND hits.product.productSKU IS NOT NULL
AND hits.product.productSKU !='GGOEYOCR077799'
AND hits.eCommerceAction.action_type = '6'
GROUP BY other_purchased_products
ORDER BY quantity DESC;

Answer 1

Below is pure equivalent in BigQuery Standard SQL (no any optimizations, improvements, etc. - just pure translation from legacy to standard)
SELECT productSKU AS other_purchased_products, COUNT(productSKU) AS quantity
FROM (
SELECT fullVisitorId, prod.productSKU, hit.eCommerceAction.action_type
FROM `bigquery-public-data.google_analytics_sample.ga_sessions_*`,
UNNEST(hits) hit, UNNEST(hit.product) prod
WHERE _TABLE_SUFFIX BETWEEN '20170401' AND '20170420'
)
WHERE fullVisitorId IN (
SELECT fullVisitorId
FROM `bigquery-public-data.google_analytics_sample.ga_sessions_*`,
UNNEST(hits) hit, UNNEST(hit.product) prod
WHERE _TABLE_SUFFIX BETWEEN '20170401' AND '20170420'
AND prod.productSKU LIKE '%GGOEYOCR077799%'
AND hit.eCommerceAction.action_type = '6'
GROUP BY fullVisitorId
)
AND productSKU IS NOT NULL
AND productSKU !='GGOEYOCR077799'
AND action_type = '6'
GROUP BY other_purchased_products
ORDER BY quantity DESC
obviously produces exactly same result as legacy version