035356288f
ClickHouse count() accepts no arguments, so the column type must be AggregateFunction(count) not AggregateFunction(count, UInt64). The latter causes countMerge() to fail with ILLEGAL_TYPE_OF_ARGUMENT. Drop and recreate the table/MV to apply the corrected schema. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
36 lines
1.4 KiB
SQL
36 lines
1.4 KiB
SQL
-- Pre-aggregated 5-minute stats rollup for route executions.
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-- Uses AggregatingMergeTree with -State/-Merge combinators so intermediate
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-- aggregates can be merged across arbitrary time windows and dimensions.
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-- Drop existing objects to allow schema changes (MV must be dropped before table)
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DROP VIEW IF EXISTS route_execution_stats_5m_mv;
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DROP TABLE IF EXISTS route_execution_stats_5m;
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CREATE TABLE route_execution_stats_5m (
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bucket DateTime('UTC'),
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route_id LowCardinality(String),
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agent_id LowCardinality(String),
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total_count AggregateFunction(count),
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failed_count AggregateFunction(countIf, UInt8),
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duration_sum AggregateFunction(sum, UInt64),
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p99_duration AggregateFunction(quantileTDigest(0.99), UInt64)
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)
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ENGINE = AggregatingMergeTree()
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PARTITION BY toYYYYMMDD(bucket)
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ORDER BY (agent_id, route_id, bucket)
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TTL bucket + toIntervalDay(30)
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SETTINGS ttl_only_drop_parts = 1;
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CREATE MATERIALIZED VIEW route_execution_stats_5m_mv
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TO route_execution_stats_5m
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AS SELECT
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toStartOfFiveMinutes(start_time) AS bucket,
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route_id,
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agent_id,
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countState() AS total_count,
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countIfState(status = 'FAILED') AS failed_count,
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sumState(duration_ms) AS duration_sum,
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quantileTDigestState(0.99)(duration_ms) AS p99_duration
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FROM route_executions
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GROUP BY bucket, route_id, agent_id;
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