SurveyCTO to Azure Synapse Integration
AI-first ETL from SurveyCTO into Azure Synapse. Governed entities, incremental sync, typed landing tables.
How Datrise loads SurveyCTO into Azure Synapse
Datrise syncs SurveyCTO's form submissions, forms, fields, answers, enumerators, and submission timestamps into Azure Synapse as a typed table per source entity. Flexible or custom fields land in NVARCHAR(MAX) JSON columns, and timestamps such as created, updated, and status changes are typed as datetime2.
Sync is incremental: Datrise uses COPY into staging, then a MERGE on stable id, so re-runs update only what changed. Hash distribution on the join id with date partitioning on facts. Synapse dedicated pools reward good hash-distribution choices, so Datrise distributes on entity ids to avoid data-movement-heavy joins.
Ideal for Azure analytics estates feeding Power BI.
Endpoints
SurveyCTO: Offline-capable field survey data collection.
Azure Synapse: Microsoft analytics workspace with SQL pools.
How SurveyCTO entities map to Azure Synapse
| SurveyCTO entity | Azure Synapse object | Notes |
|---|---|---|
| form submissions | surveycto_form_submissions | id PK · custom fields → NVARCHAR(MAX) JSON columns |
| forms | surveycto_forms | id PK · linked to surveycto_form_submissions |
| fields | surveycto_fields | id PK · linked to surveycto_form_submissions |
| answers | surveycto_answers | id PK · linked to surveycto_form_submissions |
FAQ
How does Datrise handle SurveyCTO's custom fields in Azure Synapse?
Flexible values are stored as NVARCHAR(MAX) JSON columns, so new fields don't require a migration; strongly-typed fields — dates, numbers, and references — are promoted to native Azure Synapse types.
How does the SurveyCTO to Azure Synapse sync stay up to date?
It runs incrementally — Datrise uses COPY into staging, then a MERGE on stable id.
Related pipelines
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