priv/data_migrations/PopulateEventSessionColumns/sql/create-sessions-dictionary.sql.eex

CREATE OR REPLACE DICTIONARY sessions_dict
<%= if @cluster? do %>ON CLUSTER '{cluster}'<% end %>
(
    site_id UInt64,
    session_id UInt64,
    referrer String,
    referrer_source String,
    utm_medium String,
    utm_source String,
    utm_campaign String,
    utm_content String,
    utm_term String,
    country_code String,
    subdivision1_code String,
    subdivision2_code String,
    city_geoname_id UInt32,
    screen_size String,
    operating_system String,
    operating_system_version String,
    browser String,
    browser_version String
)
PRIMARY KEY site_id, session_id
SOURCE(CLICKHOUSE(TABLE sessions_v2 <%= @dictionary_connection_params %>))
LIFETIME(<%= @dictionary_config.lifetime %>)
LAYOUT(
    complex_key_cache(
        size_in_cells <%= @dictionary_config.size_in_cells %>
        max_threads_for_updates <%= @dictionary_config.max_threads_for_updates %>
        allow_read_expired_keys 1
    )
)