jam-cloud/db/up/cohorts.sql

CREATE TABLE cohorts (
    id VARCHAR(64) PRIMARY KEY DEFAULT uuid_generate_v4(),

    start_date TIMESTAMP NOT NULL,
    end_date TIMESTAMP NOT NULL,
    cumulative BOOLEAN NOT NULL DEFAULT FALSE,
    data_set JSON NOT NULL DEFAULT '{}',
    
    created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
    updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP
);

CREATE INDEX index_started_date ON cohorts USING btree (start_date);