Stitch Data __hot__ -

CREATE TABLE id_mapping AS SELECT anonymous_id, user_id, MIN(first_seen_at) AS first_seen FROM events WHERE user_id IS NOT NULL GROUP BY anonymous_id, user_id;

Stitching data refers to the process of combining or joining multiple datasets from different sources into a single, unified dataset. The goal is to create a complete view by linking records that belong to the same entity (e.g., customer, product, transaction) across systems. stitch data

df_crm['email'] = df_crm['email'].str.lower().str.strip() df_support['email'] = df_support['email'].str.lower().str.strip() A. Simple Join (Deterministic) Use when you have a perfect matching key. CREATE TABLE id_mapping AS SELECT anonymous_id