TOKEN sequin_cdc APPEND

DESCRIPTION >
    entities CDC events from Sequin (Postgres → Tinybird via WAL).
    action = insert | update | delete | read (read = initial backfill row).
    Primary key is internal_id (the stable surrogate PK), not id (the user-facing id).

SCHEMA >
    `id`                       Nullable(String)    `json:$.id`,
    `org_id`                   Nullable(String)    `json:$.org_id`,
    `created_at`               Int64               `json:$.created_at`,
    `internal_id`              String              `json:$.internal_id`,
    `internal_customer_id`     String              `json:$.internal_customer_id`,
    `env`                      Nullable(String)    `json:$.env`,
    `name`                     Nullable(String)    `json:$.name`,
    `deleted`                  UInt8               `json:$.deleted`,
    `internal_feature_id`      Nullable(String)    `json:$.internal_feature_id`,
    `feature_id`               Nullable(String)    `json:$.feature_id`,
    `__action`                 String              `json:$.__action`,
    `__commit_timestamp`       DateTime64(6)       `json:$.__commit_timestamp`,
    `__commit_lsn`             Int64               `json:$.__commit_lsn`,
    `__idempotency_key`        String              `json:$.__idempotency_key`

ENGINE "ReplacingMergeTree"
ENGINE_VER "__commit_lsn"
ENGINE_SORTING_KEY "internal_id"
ENGINE_PRIMARY_KEY "internal_id"