Results of 1 - 10 of about 10 for timing (0.002 sec.)
- Metrics 12943
- DuckDB provides a set of metrics that can be used to monitor the performance and health of the database. Metrics are named ⟨group⟩.⟨metric⟩ , e.g., query.total_time or operator.timing . The set of collected metrics is controlled with the tr
...acked_metrics setting , which takes a list of glob patterns, e.g., ['query.*', 'operator.timing'] . By default, all metrics are collected ( ['*'] ). The available metrics, along with their types and units, can be liste...er of row groups scanned by the operator operator.rows_scanned uint64 rows Number of rows scanned by the operator operator.timing double seconds Time spent in the operator operator.total_row_groups_to_scan uint64 row_groups Total number of row groups a...tent after executing the query: { "operator": [ { "extra_info": {}, "intermediate_rows": 0, "intermediate_size_bytes": 0, "timing": 5.458e-06, "type": "RESULT_COLLECTOR", "children": [ { "extra_info": { "Projections": "name", "Estimated Cardinality": "... - https://man.mtool.work/duckdb/2.0/dev/metrics.html
- Profile and Monitor 11459
- Overview The Go client can observe query execution: it can retrieve per-operator profiling metrics after a query runs, and register a log storage that receives DuckDB's log messages. Both are described below. Profiling Profiling information
...Metrics are grouped and named in lowercase: the root's children are the root plan operator, whose metrics include type and timing , followed by one node per metric group, e.g., the query group with total_time . Walk the tree to read them: for _, child...:= range info.Children { if opType, ok := child.Metrics["type"]; ok { log.Printf("operator: %s, timing: %s", opType, child.Metrics["timing"]) } } All metrics are collected by default; to restrict them, set the tracked_metrics... - https://man.mtool.work/duckdb/2.0/clients/go/profiling.html
- CREATE TRIGGER Statement 9421
- New The CREATE TRIGGER feature was introduced in DuckDB 2.0. The CREATE TRIGGER statement registers a trigger: a set of SQL statements that run automatically in response to INSERT , UPDATE , or DELETE events on a table. Examples Record ever
...iggered statement is a single SQL statement, typically a data modification statement such as INSERT , UPDATE , or DELETE . Timing BEFORE triggers run before the triggering statement is applied. AFTER triggers run after the triggering statement is appli...riggers defined in the catalog can be listed with the duckdb_triggers() function : SELECT trigger_name, table_name, action_timing, event_manipulation, for_each FROM duckdb_triggers(); Dropping Triggers A trigger is dropped with DROP TRIGGER . The table... - https://man.mtool.work/duckdb/2.0/sql/statements/create_trigger.html
- Profile and Monitor 8867
- Overview The JDBC driver exposes several ways to observe a running or completed query: cancelling and timing out queries, polling query progress, retrieving profiling output, and emitting memory-usage events through Java Flight Recorder . T
...uery profiling output and the formats getProfilingInformation() returns. Run Queries — running the queries whose progress, timing, and profiles this page observes.... - https://man.mtool.work/duckdb/2.0/clients/java/profiling.html
- Profile and Monitor 8509
- Overview The Rust client can observe a running or completed query: it can retrieve per-operator profiling metrics after a query runs, and interrupt a long-running query from another thread. Both are shown below. Profiling Profiling must be
...nd named in lowercase (see the metrics list ): the root's children are the root plan operator, with metrics such as type , timing and intermediate_rows , followed by one node per metric group, such as query with total_time . Read a node's metrics throu... - https://man.mtool.work/duckdb/2.0/clients/rust/profiling.html
- Benchmark Suite 7955
- DuckDB has an extensive benchmark suite. When making changes that have potential performance implications, it is important to run these benchmarks to detect potential performance regressions. Getting Started To build the benchmark suite, ru
...ro/nulls/no_nulls_addition.benchmark The output will be printed to stdout in CSV format, in the following format: name run timing benchmark/micro/nulls/no_nulls_addition.benchmark 1 0.121234 benchmark/micro/nulls/no_nulls_addition.benchmark 2 0.121702.../no_nulls_addition.benchmark 5 0.124102 You can also specify an output file using the --out flag. This will write only the timings (delimited by newlines) to that file. build/release/benchmark/benchmark_runner benchmark/micro/nulls/no_nulls_addition.be...nchmark --out=timings.out The output will contain the following: 0.182472 0.185027 0.184163 0.185281 0.182948 Running Multiple Benchmarks Using... - https://man.mtool.work/duckdb/2.0/dev/benchmark.html
- Profiling 7955
- Profiling is essential to help understand why certain queries exhibit specific performance characteristics. DuckDB contains several built-in features to enable query profiling, which this page covers. For a high-level example of using EXPLA
...on', save_location := '/path/to/output.json', coverage := 'select', metrics := ['query.sql', 'query.total_time', 'operator.timing'] ); Parameter Type Description metrics LIST , STRUCT , or JSON Specifies which metrics to enable mode VARCHAR Deprecated,... - https://man.mtool.work/duckdb/2.0/dev/profiling.html
- Reference 7580
- This page lists the functions, settings, and log types exposed by the quack extension . For a tour of the protocol, start with the Overview . Function Reference Server Management Function Description quack_serve(⟨listen_uri⟩, ...) Start a s
...d_at is empty. Logging Two log types are registered by the extension. Enable them to debug connectivity or measure request timing. Quack Log Structured log of every Quack message (both client- and server-side): CALL enable_logging('Quack'); FROM quack_... - https://man.mtool.work/duckdb/2.0/quack/reference.html
- Pragmas 7401
- The PRAGMA statement is a SQL extension adopted by DuckDB from SQLite. PRAGMA statements can be issued in a similar manner to regular SQL statements. PRAGMA commands may alter the internal state of the database engine, and can influence the
...set of metrics. Metric names are grouped by stage and written in group.metric form, for example query.cpu_time or operator.timing . The following example collects only the query-level metrics and every operator metric: SET tracked_metrics = ['query.*',... - https://man.mtool.work/duckdb/2.0/configuration/pragmas.html
- DuckDB_% Metadata Functions 7204
- DuckDB offers a collection of table functions that provide metadata about the current database. These functions reside in the main schema and their names are prefixed with duckdb_ . The resultset returned by a duckdb_ table function may be
...d The object identifier of the trigger. BIGINT table_name The name of the table the trigger is attached to. VARCHAR action_timing When the trigger fires relative to the triggering statement, e.g., AFTER . VARCHAR event_manipulation The event that fires... - https://man.mtool.work/duckdb/2.0/sql/meta/duckdb_table_functions.html
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