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- List Functions – DuckDB 13016
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...s with value or NULL if value is not set. list_reverse_sort(list) Sorts the elements of the list in reverse order. See the Sorting Lists section for more details about the NULL sorting order. list_reverse(list) Reverses the list. list_select(value_list,...ing slice conventions. Negative values are accepted. See slicing . list_sort(list) Sorts the elements of the list. See the Sorting Lists section for more details about the sorting order and the NULL sorting order. list_transform(list, lambda) Returns a..., 3, 0, 0] Alias array_resize list_reverse_sort(list) Description Sorts the elements of the list in reverse order. See the Sorting Lists section for more details about the NULL sorting order. Example list_reverse_sort([3, 6, 1, 2]) Result [6, 3, 2, 1] A... - https://man.mtool.work/duckdb/1.3/sql/functions/list.html
- ORDER BY Clause – DuckDB 11451
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...ied near the very end of the query (just prior to LIMIT or OFFSET , if present). The ORDER BY clause sorts the rows on the sorting criteria in either ascending or descending order. In addition, every order clause can specify whether NULL values should b...rder can be changed with the following configuration options. Use the default_null_order option to change the default NULL sorting order to either NULLS_FIRST , NULLS_LAST , NULLS_FIRST_ON_ASC_LAST_ON_DESC or NULLS_LAST_ON_ASC_FIRST_ON_DESC : SET defaul...t_null_order = 'NULLS_FIRST' ; Use the default_order to change the direction of the default sorting order to either DESC or ASC : SET default_order = 'DESC' ; Collations Text is sorted using the binary comparison collation... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/orderby.html
- Result Verification – DuckDB 10206
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...can be used in order to force the program to print the result to the terminal for every query run in the test file. Result Sorting Queries can have an optional field that indicates that the result should be sorted in a specific manner. This field goes i...n the same location as the connection label. Because of that, connection labels and result sorting cannot be mixed. The possible values of this field are nosort , rowsort and valuesort . An example of how this might be us...queries that are logically equivalent, but formulated differently. Query labels are provided after the connection label or sorting specifier. Queries that have a query label do not need to have a result provided. Instead, the results of each of the quer... - https://man.mtool.work/duckdb/1.3/dev/sqllogictest/result_verification.html
- Union Type – DuckDB 8641
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...(a A, b B) UNION(a A, b B) UNION(a A, b C) if B can't be implicitly cast to C UNION(A, B, D) UNION(A, B, C) Comparison and Sorting Since UNION types are implemented on top of STRUCT types internally, they can be used with all the comparison operators as...of Conduct Trademark Use Blog In this article Example Union Casts Casting to Unions Casting between Unions Comparison and Sorting Functions... - https://man.mtool.work/duckdb/1.3/sql/data_types/union.html
- Tuning Workloads – DuckDB 8481
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...operators in relational database systems. The main blocking operators are the following: grouping: GROUP BY joining: JOIN sorting: ORDER BY windowing: OVER ... (PARTITION BY ... ORDER BY ...) DuckDB supports larger-than-memory processing for all of the...me aggregate functions , such as list() and string_agg() , do not support offloading to disk. Aggregate functions that use sorting are holistic, i.e., they need all inputs before the aggregation can start. As DuckDB cannot yet offload some complex inter... - https://man.mtool.work/duckdb/1.3/guides/performance/how_to_tune_workloads.html
- Iceberg Extension – DuckDB 7699
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...?' , allow_moved_paths = true ); The “latest” version is assumed to be the filename that is lexicographically largest when sorting the filenames. Collations are not considered. This behavior is not enabled by default as it may potentially violate ACID c... - https://man.mtool.work/duckdb/1.3/core_extensions/iceberg/overview.html
- Environment – DuckDB 7699
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...ss larger-than-memory workloads by spilling to disk. This is possible thanks to out-of-core support for grouping, joining, sorting and windowing operators. Note that larger-than-memory workloads can be processed both in persistent mode and in in-memory... - https://man.mtool.work/duckdb/1.3/guides/performance/environment.html
- Indexing – DuckDB 7699
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...highly selective queries using the indexed column. An ART index does not affect the performance of join, aggregation, and sorting queries. ART Index Scans ART index scans probe a single-column ART index for the requested data instead of scanning a tabl... - https://man.mtool.work/duckdb/1.3/guides/performance/indexing.html
- Collations – DuckDB 7699
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...For that reason, different collations are supported. The user must choose which collation they want to use when performing sorting and comparison operations. By default, the BINARY collation is used. That means that strings are ordered and compared base... - https://man.mtool.work/duckdb/1.3/sql/expressions/collations.html
- SELECT Statement – DuckDB 7699
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...T are output modifiers. Logically they are applied at the very end of the query. The ORDER BY clause sorts the rows on the sorting criteria in either ascending or descending order. The LIMIT clause restricts the amount of rows fetched, while the OFFSET... - https://man.mtool.work/duckdb/1.3/sql/statements/select.html
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