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data transformation : bronze -> silver data cleaning and standardization in store table #72

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Merged
Ritik574-coder merged 1 commit into from
May 23, 2026
Merged

data transformation : bronze -> silver data cleaning and standardization in store table #72

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14 changes: 7 additions & 7 deletions explore_database/reviews/reviews.sql
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Original file line number Diff line number Diff line change
Expand Up @@ -386,17 +386,17 @@ WITH clean_review_channel AS
WHEN TRIM(LOWER(review_channel)) IN ('app', 'mobile app', 'mobile') THEN 'Mobile App'
WHEN TRIM(LOWER(review_channel)) IN ('in store', 'in-store', 'store') THEN 'In Store'
WHEN TRIM(LOWER(review_channel)) IN ('online', 'web') THEN 'Online'
WHEN TRIM(LOWER(review_channel)) = 'phone' THEN 'Phone Call'
WHEN TRIM(LOWER(review_channel)) = 'catalog' THEN 'Catalog'
WHEN TRIM(LOWER(review_channel)) = 'phone' THEN 'Phone Call'
WHEN TRIM(LOWER(review_channel)) = 'catalog' THEN 'Catalog'
ELSE 'Unknown'
END AS review_channel
FROM bronze.reviews
)
SELECT
review_channel,
COUNT(*) as channel_count,
CAST(ROUND(COUNT(*)*100/SUM(COUNT(*)) OVER(), 2)as nvarchar) + '%' as percentages
FROM clean_review_channel
review_channel,
COUNT(*) as channel_count,
CAST(ROUND(COUNT(*)*100/SUM(COUNT(*)) OVER(), 2)as nvarchar) + '%' as percentages
FROM clean_review_channel
GROUP BY review_channel
ORDER BY channel_count DESC ;

Expand All @@ -405,7 +405,7 @@ FROM clean_review_channel
--=============================================================================================
-- review_title data overview
SELECT
review_title
review_title
FROM bronze.reviews ;

-- review_title data profiling
Expand Down
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