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- Profiling – DuckDB 10591
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...the metrics section below. disable_profiling , disable_profile Turn off profiling Metrics The query tree has two types of nodes: the QUERY_ROOT and OPERATOR nodes. The QUERY_ROOT refers exclusively to the top-level node, and the metrics it contains a...re measured over the entire query. The OPERATOR nodes refer to the individual operators in the query plan. Some metrics are only available for QUERY_ROOT nodes, while others ar...e only for OPERATOR nodes. The table below describes each metric and which nodes they are available for. Other than QUERY_NAME and OPERATOR_TYPE , i... - https://man.mtool.work/duckdb/1.3/dev/profiling.html
- Overview of DuckDB Internals – DuckDB 10501
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...represents, e.g., a comparison is represented as a ComparisonExpression . ParsedExpressions do not have types, except for nodes with explicit types such as CAST statements. The types for expressions are resolved in the Binder, not in the Parser. Tabl...d into multiple SQL statements in case the original query string contains multiple queries. Binder The binder converts all nodes into their bound equivalents. In the binder phase: The tables and columns are resolved using the catalog Types are resolve...eryNode TableRef → BoundTableRef ParsedExpression → Expression Logical Planner The logical planner creates LogicalOperator nodes from the bound statements. In this phase, the actual logical query tree is created. Optimizer After the logical planner ha... - https://man.mtool.work/duckdb/1.3/internals/overview.html
- R-Tree Indexes – DuckDB 10410
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...res the approximate minimum bounding rectangle of each geometry (and the internal ID of the corresponding row) in the leaf nodes, and the bounding rectangle enclosing all of the child nodes in each internal node. The minimum bounding rectangle (MBR) o...rsect a specific region of interest, as you can skip searching entire sub-trees if the bounding rectangles of their parent nodes don't intersect the query region at all. Once the leaf nodes are reached, only the specific rows whose geometries intersec...hm" (Sort-Tile-Recursive) is used, which divides all entries into an already balanced tree as the total number of required nodes can be computed from the beginning. Additionally, using the bulk loading algorithm tends to create a R-tree with a better... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/r-tree_indexes.html
- macOS – DuckDB 10302
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...The build fails on macOS with following error: FAILED: third_party/libpg_query/CMakeFiles/duckdb_pg_query.dir/src_backend_nodes_list.cpp.o /Library/Developer/CommandLineTools/usr/bin/c++ -DDUCKDB_BUILD_LIBRARY -DEXT_VERSION_PARQUET=\"9cba6a2a03\" -I/...fPIC -fvisibility=hidden -fcolor-diagnostics -w -MD -MT third_party/libpg_query/CMakeFiles/duckdb_pg_query.dir/src_backend_nodes_list.cpp.o -MF third_party/libpg_query/CMakeFiles/duckdb_pg_query.dir/src_backend_nodes_list.cpp.o.d -o third_party/libpg_...query/CMakeFiles/duckdb_pg_query.dir/src_backend_nodes_list.cpp.o -c /Users/builder/external/duckdb/third_party/libpg_query/src_backend_nodes_list.cpp In file included from /Use... - https://man.mtool.work/duckdb/1.3/dev/building/macos.html
- WITH Clause – DuckDB 10302
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
..., 8 ), ( 6 , 3 ), ( 6 , 4 ), ( 7 , 4 ), ( 8 , 1 ), ( 9 , 4 ); Note that the graph contains directed cycles, e.g., between nodes 1, 5 and 8. Enumerate All Paths from a Node The following query returns all paths starting in node 1: WITH RECURSIVE paths...id -- Prevent adding a node that was visited previously by any path. -- This ensures that (1) no cycles occur and (2) only nodes that -- were not visited by previous (shorter) paths are added to a path. WHERE NOT EXISTS ( FROM paths previous_paths WHE...1, 3] 1 5 [1, 5] 1 8 [1, 3, 8] 1 10 [1, 3, 10] 1 4 [1, 5, 4] 1 8 [1, 5, 8] Enumerate Unweighted Shortest Paths between Two Nodes WITH RECURSIVE can also be used to find all (unweighted) shortest paths between two nodes . To ensure that the recursive q... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/with.html
- Subqueries – DuckDB 6868
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...operator is generally the most useful as a correlated subquery to express antijoin operations. For example, to find Person nodes without an interest: CREATE TABLE Person ( id BIGINT , name VARCHAR ); CREATE TABLE interest ( PersonId BIGINT , topic VAR... - https://man.mtool.work/duckdb/1.3/sql/expressions/subqueries.html
- Spatial Functions – DuckDB 6759
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...s ( polygon POLYGON_2D ) UBIGINT ST_NPoints ( box BOX_2D ) Description Returns the number of vertices within a geometry ST_Node Signature GEOMETRY ST_Node ( geom GEOMETRY ) Description Returns a "noded" MultiLinestring, produced by combining a collect...rotobuf parsing which makes it a lot faster than using the ST_Read() OSM driver, however it only outputs the raw OSM data (Nodes, Ways, Relations), without constructing any geometries. For simple node entities (like PoI's) you can trivially construct...POINT geometries, but it is also possible to construct LINESTRING and POLYGON geometries by manually joining refs and nodes together in SQL, although with available memory usually being a limiting factor. The ST_ReadOSM() function also provides a... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/functions.html
- Relational API – DuckDB 6470
- This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview
...API is an alternative API that can be used to incrementally construct queries. The API is centered around DuckDBPyRelation nodes. The relations can be seen as symbolic representations of SQL queries. Lazy Evaluation The relations do not hold any data... - https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
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