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- Array Functions – DuckDB 13265
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.... Array-Native Functions Function Description array_value(arg1, ...) Create an ARRAY containing the argument values. array_cross_product(array1, array2) Compute the cross product of two arrays of size 3. The array elements can not be NULL . array_cosi...ARRAY containing the argument values. Example array_value(1.0::FLOAT, 2.0::FLOAT, 3.0::FLOAT) Result [1.0, 2.0, 3.0] array_cross_product(array1, array2) Description Compute the cross product of two arrays of size 3. The array elements can not be NULL.... Example array_cross_product(array_value(1.0::FLOAT, 2.0::FLOAT, 3.0::FLOAT), array_value(2.0::FLOAT, 3.0::FLOAT, 4.0::FLOAT)) Result [-1.0, 2.... - https://man.mtool.work/duckdb/1.3/sql/functions/array.html
- Unofficial and Unsupported Platforms – DuckDB 10615
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...ntpause_zvl256b' \ CORE_EXTENSIONS = 'fts' \ make For those who do not have a RISC-V chip development environment, you can cross-compile DuckDB using latest g++-riscv64-linux-gnu : GEN = ninja \ CC = 'riscv64-linux-gnu-gcc -march=rv64gcv_zicsr_zifence...64-linux-gnu-g++ -march=rv64gcv_zicsr_zifencei_zihintpause_zvl256b' \ make For more reference information on DuckDB RISC-V cross-compiling, see the mocusez/duckdb-riscv-ci and DuckDB Pull Request #16549 関連キーワード DuckDB platforms build march gcv...ei zihintpause zvl riscv supported built Architectures architectures officially instructions levels these using ninja make cross Documentation Development Building 関連するページ Building DuckDB from Source Raspberry Pi Building Configuration Linux Bu... - https://man.mtool.work/duckdb/1.3/dev/building/unofficial_and_unsupported_platfo...
- FROM and JOIN Clauses – DuckDB 9744
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...ows that get paired are returned). When an unpaired row is returned, the attributes from the other table are set to NULL . Cross Product Joins (Cartesian Product) The simplest type of join is a CROSS JOIN . There are no conditions for this type of joi...n, and it just returns all the possible pairs. Return all pairs of rows: SELECT a . * , b . * FROM a CROSS JOIN b ; This is equivalent to omitting the JOIN clause: SELECT a . * , b . * FROM a , b ; Conditional Joins Most joins ar...DuckDB Foundation, Amsterdam NL DuckDB Home Code of Conduct Trademark Use Blog In this article Examples Joins Outer Joins Cross Product Joins (Cartesian Product) Conditional Joins Natural Joins Semi and Anti Joins Lateral Joins Positional Joins As-Of... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/from.html
- Relational API – DuckDB 9299
- 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
...on the relation apply Compute the function of a single column or a list of columns by the optional groups on the relation cross Create cross/cartesian product of two relational objects except_ Create the set except of this relation object with anothe...ar │ int64 │ ├─────────────────┼───────────┤ │ value is uneven │ 5 │ │ value is even │ 4 │ └─────────────────┴───────────┘ cross Signature cross ( self : duckdb . duckdb . DuckDBPyRelation , other_rel : duckdb . duckdb . DuckDBPyRelation ) -> duckdb ....duckdb . DuckDBPyRelation Description Create cross/cartesian product of two relational objects Parameters other_rel : duckdb.duckdb.DuckDBPyRelation Another relation to perf... - https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
- Create Synthetic Data – DuckDB 9086
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...use: range functions hash functions, e.g., hash , md5 , sha256 the Faker Python package via the Python function API using cross products (Cartesian products) For example: import duckdb from duckdb.typing import * from faker import Faker fake = Faker...random_short_text() AS short, random_long_text() AS long, IF (j % 2, true, false) AS bool FROM generate_series(1, 5) s(i) CROSS JOIN generate_series(1, 2) t(j) """ ) res . show () This generates the following: ┌──────────────────────┬──────────────┬─... - https://man.mtool.work/duckdb/1.3/guides/snippets/create_synthetic_data.html
- Array Type – DuckDB 8855
- 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
...: FLOAT , 3.0 :: FLOAT )); INSERT INTO y VALUES ( 1 , array_value ( 2.0 :: FLOAT , 3.0 :: FLOAT , 4.0 :: FLOAT )); Compute cross product: SELECT array_cross_product ( x.v , y.v ) FROM x , y WHERE x.i = y.i ; Compute cosine similarity: SELECT array_cos... - https://man.mtool.work/duckdb/1.3/sql/data_types/array.html
- Concurrency – DuckDB 7539
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...gn patterns are possible, but would need to be implemented in application logic. For example, each process could acquire a cross-process mutex lock, then open the database in read/write mode and close it when the query is complete. Instead of using a... - https://man.mtool.work/duckdb/1.3/connect/concurrency.html
- Loops – DuckDB 7539
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...E TABLE strings AS SELECT * FROM repeat ( 'hello' , 100 ) t1 ( s ); Using these two functions, together with clever use of cross products and other expressions, many different types of datasets can be efficiently generated. The random() function can a... - https://man.mtool.work/duckdb/1.3/dev/sqllogictest/loops.html
- Extensions – DuckDB 7326
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...ecks and dynamic load the binary with the main DuckDB binary. In DuckDB-Wasm, INSTALL is a no-op given there is no durable cross-session storage. The LOAD operation will fetch (and decompress on the fly), perform signature checks and dynamically load... - https://man.mtool.work/duckdb/1.3/clients/wasm/extensions.html
- sqllogictest Introduction – DuckDB 7326
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...izers, but also finds bugs in e.g., join implementations. This is because the unoptimized version will typically run using cross products instead. Because of this, query verification can be very slow to do when working with larger data sets. It is the... - https://man.mtool.work/duckdb/1.3/dev/sqllogictest/intro.html
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