34 lines
1.7 KiB
MySQL
34 lines
1.7 KiB
MySQL
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-- Alerting projections — additive and idempotent (IF NOT EXISTS).
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-- Safe to run on every startup alongside init.sql.
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--
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-- NOTE: executions uses ReplacingMergeTree which requires deduplicate_merge_projection_mode='rebuild'
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-- to support projections (ClickHouse 24.x). The ADD PROJECTION and MATERIALIZE statements for
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-- executions are treated as best-effort by the schema initializer (non-fatal on failure).
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-- logs and agent_metrics use plain MergeTree and always succeed.
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--
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-- MATERIALIZE statements are also wrapped as non-fatal to handle empty tables in fresh deployments.
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-- Plain MergeTree tables: always succeed
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ALTER TABLE logs
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ADD PROJECTION IF NOT EXISTS alerting_app_level
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(SELECT * ORDER BY (tenant_id, environment, application, level, timestamp));
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ALTER TABLE agent_metrics
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ADD PROJECTION IF NOT EXISTS alerting_instance_metric
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(SELECT * ORDER BY (tenant_id, environment, instance_id, metric_name, collected_at));
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-- ReplacingMergeTree tables: best-effort (requires deduplicate_merge_projection_mode='rebuild')
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ALTER TABLE executions
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ADD PROJECTION IF NOT EXISTS alerting_app_status
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(SELECT * ORDER BY (tenant_id, environment, application_id, status, start_time));
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ALTER TABLE executions
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ADD PROJECTION IF NOT EXISTS alerting_route_status
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(SELECT * ORDER BY (tenant_id, environment, route_id, status, start_time));
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-- MATERIALIZE: best-effort on all tables (non-fatal if table is empty or already running)
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ALTER TABLE logs MATERIALIZE PROJECTION alerting_app_level;
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ALTER TABLE agent_metrics MATERIALIZE PROJECTION alerting_instance_metric;
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ALTER TABLE executions MATERIALIZE PROJECTION alerting_app_status;
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ALTER TABLE executions MATERIALIZE PROJECTION alerting_route_status;
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