43 lines
1.3 KiB
SQL
43 lines
1.3 KiB
SQL
-- Create a read-only user for API access (optional security)
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DO $$
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BEGIN
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IF NOT EXISTS (SELECT FROM pg_roles WHERE rolname = 'btc_api') THEN
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CREATE USER btc_api WITH PASSWORD 'api_password_change_me';
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END IF;
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END
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$$;
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-- Grant read-only permissions
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GRANT CONNECT ON DATABASE btc_data TO btc_api;
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GRANT USAGE ON SCHEMA public TO btc_api;
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GRANT SELECT ON ALL TABLES IN SCHEMA public TO btc_api;
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-- Grant sequence access for ID columns
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GRANT USAGE ON ALL SEQUENCES IN SCHEMA public TO btc_api;
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-- Apply to future tables
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ALTER DEFAULT PRIVILEGES IN SCHEMA public GRANT SELECT ON TABLES TO btc_api;
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-- Create continuous aggregate for hourly stats (optional optimization)
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CREATE MATERIALIZED VIEW IF NOT EXISTS hourly_stats
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WITH (timescaledb.continuous) AS
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SELECT
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time_bucket('1 hour', time) as bucket,
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symbol,
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interval,
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FIRST(open, time) as first_open,
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MAX(high) as max_high,
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MIN(low) as min_low,
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LAST(close, time) as last_close,
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SUM(volume) as total_volume,
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COUNT(*) as candle_count
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FROM candles
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GROUP BY bucket, symbol, interval;
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-- Add refresh policy for continuous aggregate
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SELECT add_continuous_aggregate_policy('hourly_stats',
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start_offset => INTERVAL '1 month',
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end_offset => INTERVAL '1 hour',
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schedule_interval => INTERVAL '1 hour',
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if_not_exists => TRUE
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); |