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Data warehouse ⇄ Business productivity

ClickHouse to eClinicalWorks integration — real-time, two-way sync

Keep ClickHouse and eClinicalWorks in sync without custom scripts. Cut weeks of integration work, eliminate silent data drift, and give your team a single, reliable source of truth.

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Adopted by fast-scaling companies moving mission-critical data in real time

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Why teams connect ClickHouse and eClinicalWorks

Get the data locked inside eClinicalWorks into ClickHouse as live tables, and send results back where eClinicalWorks can use them, without writing a pipeline.

Whatever eClinicalWorks is used for, it accumulates data the rest of the company wants to analyze, and that data usually sits behind an API rather than in the warehouse. Building and babysitting an extraction pipeline is the tax most teams pay for it.

Stacksync syncs Allergies, Immunizations, Documents, Diagnostic reports from eClinicalWorks into tables in ClickHouse continuously, handling schema, rate limits, and retries. Because the sync is bi-directional, results computed in ClickHouse can also be written back into fields in eClinicalWorks where the tool can use them.

Common use cases

  • 01 Keep provider directories consistent between eClinicalWorks and scheduling or marketing systems.
  • 02 Push referral or intake data captured in external forms into the EHR via HL7 interfaces.
  • 03 Land product event data alongside synced CRM accounts so analysts join usage and revenue in one place.
  • 04 Sync aggregated ClickHouse query results back into operational tools, such as account-level usage metrics into a CRM.

Common sync patterns

History that outlives the tool

A continuously synced copy in ClickHouse preserves a queryable record even as data ages out of eClinicalWorks or gets changed inside it.

Analytics on eClinicalWorks's data

Records and events from eClinicalWorks land in ClickHouse as queryable tables, current within seconds and ready to join with the rest of the warehouse.

Cross-tool reporting

Combine eClinicalWorks's data with data from every other synced system to answer questions no single tool can.

What you can sync between ClickHouse and eClinicalWorks

Representative objects on each side — any object or custom field can map to any target. Schemas are auto-detected; types are converted between the two systems.

ClickHouse objects eClinicalWorks objects How this pairing syncs
Dictionaries In-memory lookup structures refreshed from external sources, sometimes fed by syncs. Documents Clinical notes and attachments referenced from the chart. Dictionaries is specific to ClickHouse and Documents to eClinicalWorks — each maps to any object or custom field on the other side.
Tables (MergeTree family) Columnar, append-optimized tables that serve as the destination for high-volume sync loads. Diagnostic reports Structured result reports grouping observations for a study or panel. Tables (MergeTree family) is specific to ClickHouse and Diagnostic reports to eClinicalWorks — each maps to any object or custom field on the other side.
Databases Namespaces that group tables and scope permissions for sync users. Patients Demographic records exposed via FHIR Patient resources and HL7 ADT feeds; the anchor for all clinical syncs. Databases is specific to ClickHouse and Patients to eClinicalWorks — each maps to any object or custom field on the other side.
Views Saved queries used as curated, read-only sync sources. Appointments Scheduling records available via FHIR and HL7 SIU messages, synced for reminders and outreach. Views is specific to ClickHouse and Appointments to eClinicalWorks — each maps to any object or custom field on the other side.
Materialized views Insert-time transformations that reshape incoming synced rows into aggregates. Encounters Visit records tying diagnoses, providers, and billing context together. Materialized views is specific to ClickHouse and Encounters to eClinicalWorks — each maps to any object or custom field on the other side.
Distributed tables Query-routing tables over cluster shards in self-managed deployments. Practitioners Provider records used to keep directories and scheduling systems consistent. Distributed tables is specific to ClickHouse and Practitioners to eClinicalWorks — each maps to any object or custom field on the other side.

How changes propagate between ClickHouse and eClinicalWorks

Each direction of the sync is driven by what the source system can signal and what the destination accepts — detection, delivery, and expected latency below.

ClickHouse eClinicalWorks Interval-based propagation

DetectionStacksync polls ClickHouse for changes on an incremental schedule, reading only records changed since the previous pass. No log-based CDC for consumers.

DeliveryEach detected change is written to eClinicalWorks through its API, with automatic retries and rate-limit backoff.

eClinicalWorks ClickHouse Interval-based propagation

DetectionStacksync polls eClinicalWorks for changes on an incremental schedule, reading only records changed since the previous pass. HL7 interface feeds push event messages as they occur.

DeliveryEach detected change is applied to ClickHouse as a row-level write, with types converted between the two schemas.

Rate-limit considerations

  • eClinicalWorks: Subject to the platform's API rate limits and interface throughput agreements.
What ships with ClickHouse ⇄ eClinicalWorks

Connect ClickHouse and eClinicalWorks for flexible, real-time data sync.

Real-time sync, workflow automation, event queues, EDI, and monitoring, for every ClickHouse–eClinicalWorks connection.

Real-time

Two-way sync

Changes in ClickHouse or eClinicalWorks instantly reflect in both systems. No stale data, no manual imports.

No-code + pro-code

Workflow automation

Trigger automated workflows whenever ClickHouse or eClinicalWorks data changes, update records, fire webhooks, or kick off sequences without brittle API scripts.

At scale

Event queues

Handle millions of events per minute without losing a single ClickHouse or eClinicalWorks record.

Observability

Monitoring

Track your ClickHouse ⇄ eClinicalWorks sync health, view errors, and replay failed events in one click.

Trading partners

EDI

Transform legacy EDI complexity into simple database interactions between ClickHouse and eClinicalWorks.

How the ClickHouse and eClinicalWorks connectors work

ClickHouse

Integration surface
Native TCP protocol and HTTP interface; standard SQL dialect, with MySQL and PostgreSQL wire compatibility available
Authentication
Database credentials (username/password); ClickHouse Cloud issues per-service credentials over TLS
Change detection
No log-based CDC for consumers; incremental reads use polling on monotonic columns, and ClickHouse is usually the destination rather than the source
Capabilities
read · write

eClinicalWorks

Integration surface
FHIR R4 REST API plus HL7 v2 interfaces (ADT, SIU, ORU) through an interface engine
Authentication
OAuth 2.0 / SMART on FHIR for the FHIR API; site-configured credentials for HL7 interface connections
Change detection
HL7 interface feeds push event messages as they occur; the FHIR API is polled
Capabilities
read · write
Rate limits
Subject to the platform's API rate limits and interface throughput agreements
How it works

How to connect ClickHouse to eClinicalWorks — three steps, no code

Configure and sync within minutes, no code. Whether you sync 50k or 100M+ records, Stacksync handles the queues, infra, and plumbing. Integrations are non-invasive and need zero setup on your systems.

  1. 01

    Connect your apps

    Authenticate ClickHouse and eClinicalWorks with each platform's native method — OAuth, API keys, or service accounts — plus secure options like SSH tunneling, IP whitelisting, and VPC peering.

    • OAuth 2.0
    • SSH tunnel
    • VPC peering
    ClickHouse connected
    eClinicalWorks connected
    OAuth 2.0
    SSH tunnel
    SSL certificate
    VPC peering
  2. 02

    Choose tables

    Pick the ClickHouse and eClinicalWorks objects to sync — Stacksync auto-detects both schemas, including custom fields where the platform exposes them. Sync to existing tables, or let Stacksync create new ones with ideal data types.

    • Standard objects
    • Custom objects
    • Auto-schema
    objects · ClickHouse ⇄ eClinicalWorks
    Customers 12,480
    Sales Orders 8,213
    Invoices 5,902
    Items 1,344
  3. 03

    Map fields

    Fields map automatically even when names and types differ. Stacksync handles transformation and type casting for you, zero configuration required.

    • Auto-map
    • Type casting
    • Transforms
    ClickHouse eClinicalWorks
    Company company_name text
    Email email text
    Amount amount numeric
    Created created_at timestamp
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FAQ

ClickHouse and eClinicalWorks integration FAQ

SECURITY

Security teams trust Stacksync

As a data company, we understand the importance of keeping your data secure. Stacksync is built with security best practices to keep your data safe at every layer, and is DPF-certified for US, EU, UK and CH data transfers.

Learn more about security
SOC 2 Type II
ISO 27001
HIPAA BAA
GDPR
CCPA
DPF US-EU-UK-CH
→ SECURITY WITH BENEFITS

SSO & SCIM

Let your users access Stacksync from your centralized user management systems. Works with Okta, Azure, Google SSO and more.

Alerts

Immediately get alerted about record syncing issues over email, Slack, PagerDuty and WhatsApp. Resolve issues from a centralized dashboard with retry and revert options.

Secure connection options

Securely connects to your systems with:

OAuth 2 SSH Tunnelling SSL certificates IP Whitelisting VPN gateway VPC peering and more

Related integrations

Every pair below is a real-time, two-way sync. Search all 473 integrations available for ClickHouse and eClinicalWorks.

Popular · 8 of 473
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