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stateTable

stateTable contains the states of all assets.

less than a minute

Usage

This table contains all state changes of the assets.

Structure

key	data type	description	example
`timestamp`	`timestamptz`	Entry timestamp	0
`asset_id`	`serial`	Asset ID (see assetTable)	1
`state`	`integer`	State ID (see states)	40000

Relations

DDL

CREATE TABLE IF NOT EXISTS stateTable
(
    timestamp   TIMESTAMPTZ NOT NULL,
    asset_id    SERIAL      REFERENCES assetTable (id),
    state       INTEGER     CHECK (state >= 0),
    UNIQUE(timestamp, asset_id)
);
-- creating hypertable
SELECT create_hypertable('stateTable', 'timestamp');

-- creating an index to increase performance
CREATE INDEX ON stateTable (asset_id, timestamp DESC);

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