PostHog to DuckDB Integration
AI-first ETL from PostHog into DuckDB. Governed entities, incremental sync, typed landing tables.
How Datrise loads PostHog into DuckDB
Datrise syncs PostHog's events, persons, sessions, feature flags, cohorts, and insights into DuckDB as a typed table per source entity in a DuckDB file. Flexible or custom fields land in JSON or STRUCT columns, and timestamps such as created, updated, and status changes are typed as TIMESTAMP WITH TIME ZONE.
Sync is incremental: Datrise uses rewrites changed entities into the local database (or Parquet) on each run, so re-runs update only what changed. Hive-partitioned Parquet by load date when exporting. DuckDB is single-writer and embedded, so Datrise produces a consistent file snapshot rather than concurrent streaming writes.
Ideal for local and notebook analytics without standing up a server.
Endpoints
PostHog: Product analytics with session replay and flags.
DuckDB: In-process analytics database for fast local OLAP.
How PostHog entities map to DuckDB
| PostHog entity | DuckDB object | Notes |
|---|---|---|
| events | posthog_events | TIMESTAMP WITH TIME ZONE events |
| persons | posthog_persons | id PK · linked to posthog_events |
| sessions | posthog_sessions | id PK · linked to posthog_events |
| feature flags | posthog_feature_flags | id PK · linked to posthog_events |
FAQ
How does Datrise handle PostHog's custom fields in DuckDB?
Flexible values are stored as JSON or STRUCT columns, so new fields don't require a migration; strongly-typed fields — dates, numbers, and references — are promoted to native DuckDB types.
How does the PostHog to DuckDB sync stay up to date?
It runs incrementally — Datrise uses rewrites changed entities into the local database (or Parquet) on each run.
Related pipelines
More destinations for PostHog
Early access
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