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- Array Type – DuckDB 13890
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...4 ), array_value ( 5 , 6 )); Arrays can store structs: SELECT array_value ({ 'a' : 1 , 'b' : 2 }, { 'a' : 3 , 'b' : 4 }); Defining an Array Field Arrays can be created using the TYPE_NAME [ LENGTH ] syntax. For example, to create an array field for 3 in...using brackets and slicing notation, or through list functions like list_extract and array_extract . Using the example in Defining an Array Field . The following queries for extracting the second element of an array are equivalent: SELECT id , arr [ 1 ]...tract element length store using types values column fixed arrays fields used embeddings variable nested created cast like Defining example 関連するページ List Type Nested Functions Map Type JSON Type List Functions Indexing See this page as Markdown Edi... - https://man.mtool.work/duckdb/1.3/sql/data_types/array.html
- Friendly SQL – DuckDB 9814
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...statements in scripts. CREATE TABLE ... AS SELECT (CTAS) : create a new table from the output of a table without manually defining a schema. INSERT INTO ... BY NAME : this variant of the INSERT statement allows using column names instead of positions. I...query results. Transforming tables: PIVOT to turn long tables to wide tables. UNPIVOT to turn wide tables to long tables. Defining SQL-level variables: SET VARIABLE RESET VARIABLE Query Features Column aliases in WHERE , GROUP BY , and HAVING . (Note th... - https://man.mtool.work/duckdb/1.3/sql/dialect/friendly_sql.html
- INSERT Statement – DuckDB 9224
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...RIMARY KEY ( id1 , id2 )); INSERT OR REPLACE INTO t1 VALUES ( 1 , 2 , 3 ); INSERT OR REPLACE INTO t1 VALUES ( 1 , 2 , 4 ); Defining a Conflict Target A conflict target may be provided as ON CONFLICT (conflict_target) . This is a group of columns that an...Order INSERT INTO ... [BY POSITION] INSERT INTO ... BY NAME ON CONFLICT Clause DO NOTHING Clause DO UPDATE Clause (Upsert) Defining a Conflict Target RETURNING Clause... - https://man.mtool.work/duckdb/1.3/sql/statements/insert.html
- Indexing – DuckDB 8348
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...lue. An ordered INTEGER column allows skipping all row groups except those containing the value. ART Indexes DuckDB allows defining Adaptive Radix Tree (ART) indexes in two ways. First, such an index is created implicitly for columns with PRIMARY KEY , F... - https://man.mtool.work/duckdb/1.3/guides/performance/indexing.html
- Schema – DuckDB 8348
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...ng numeric values as strings, especially if you intend to perform e.g., join operations on them. Constraints DuckDB allows defining constraints such as UNIQUE , PRIMARY KEY , and FOREIGN KEY . These constraints can be beneficial for ensuring data integri... - https://man.mtool.work/duckdb/1.3/guides/performance/schema.html
- marimo Notebooks – DuckDB 8348
- 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
...pl df = pl . DataFrame ({ "column" : [ 1 , 2 , 3 ]}) SELECT * FROM df WHERE column > 2 Reference the Output of a SQL Cell Defining a non-private (non-underscored) output variable in the SQL cell allows you to reference the resulting dataframe in other P... - https://man.mtool.work/duckdb/1.3/guides/python/marimo.html
- Reading Faulty CSV Files – DuckDB 8044
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...tatement to automatically derive types from an existing table. Since the type of this field was auto-detected, it suggests defining the field as a VARCHAR or fully utilizing the dataset for type detection. Finally, the last block presents some of the opt... - https://man.mtool.work/duckdb/1.3/data/csv/reading_faulty_csv_files.html
- WITH Clause – DuckDB 8044
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...ms a grouped aggregation and is queried more than once, it is materialized. Materialization can be explicitly activated by defining the CTE using AS MATERIALIZED and disabled by using AS NOT MATERIALIZED . Take the following query for example, which invo... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/with.html
- CREATE MACRO Statement – DuckDB 8044
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...is not possible to define a macro by the same name twice without first removing the first definition. Recursive Functions Defining recursive functions is not supported. For example, the following macro – supposed to compute the n th number of the Fibona... - https://man.mtool.work/duckdb/1.3/sql/statements/create_macro.html
- Relational API – DuckDB 7168
- 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
...duckdb . DuckDBPyRelation Description Reorder the relation object by order_expr Parameters order_expr : str SQL expression defining the ordering of the result rows. Example import duckdb duckdb_conn = duckdb . connect () rel = duckdb_conn . sql ( """ sel... - https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
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