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https://github.com/ClickHouse/ClickHouse.git
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67 lines
2.0 KiB
SQL
67 lines
2.0 KiB
SQL
DROP TABLE IF EXISTS current_failed_query_metrics;
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DROP TABLE IF EXISTS to_insert;
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CREATE TABLE current_failed_query_metrics (event LowCardinality(String), value UInt64) ENGINE = Memory();
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INSERT INTO current_failed_query_metrics
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SELECT event, value
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FROM system.events
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WHERE event in ('FailedQuery', 'FailedInsertQuery', 'FailedSelectQuery');
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CREATE TABLE to_insert (value UInt64) ENGINE = Memory();
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-- Failed insert before execution
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INSERT INTO table_that_do_not_exists VALUES (42); -- { serverError 60 }
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SELECT current_value - previous_value
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FROM (
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SELECT event, value as current_value FROM system.events WHERE event like 'FailedInsertQuery'
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) AS previous
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ALL LEFT JOIN (
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SELECT event, value as previous_value FROM current_failed_query_metrics
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) AS current
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on previous.event = current.event;
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-- Failed insert in execution
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INSERT INTO to_insert SELECT throwIf(1); -- { serverError 395 }
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SELECT current_value - previous_value
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FROM (
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SELECT event, value as current_value FROM system.events WHERE event like 'FailedInsertQuery'
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) AS previous
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ALL LEFT JOIN (
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SELECT event, value as previous_value FROM current_failed_query_metrics
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) AS current
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on previous.event = current.event;
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-- Failed select before execution
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SELECT * FROM table_that_do_not_exists; -- { serverError 60 }
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SELECT current_value - previous_value
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FROM (
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SELECT event, value as current_value FROM system.events WHERE event like 'FailedSelectQuery'
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) AS previous
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ALL LEFT JOIN (
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SELECT event, value as previous_value FROM current_failed_query_metrics
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) AS current
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on previous.event = current.event;
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-- Failed select in execution
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SELECT throwIf(1); -- { serverError 395 }
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SELECT current_value - previous_value
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FROM (
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SELECT event, value as current_value FROM system.events WHERE event like 'FailedSelectQuery'
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) AS previous
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ALL LEFT JOIN (
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SELECT event, value as previous_value FROM current_failed_query_metrics
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) AS current
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on previous.event = current.event;
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DROP TABLE current_failed_query_metrics;
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DROP TABLE to_insert;
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