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- Interval Type – DuckDB 13641
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...ap Live Demo Documentation / SQL / Data Types Copy Markdown Interval Type INTERVAL s represent periods of time that can be added to or subtracted from DATE , TIMESTAMP , TIMESTAMPTZ , or TIME values. Name Description INTERVAL Period of time An INTERVA..., INTERVAL 1_234 MILLISECONDS ), -- returns 1_234_000 ; Arithmetic with Timestamps, Dates and Intervals INTERVAL s can be added to and subtracted from TIMESTAMP s, TIMESTAMPTZ s, DATE s, and TIME s using the + and - operators. SELECT DATE '2000-01-01...pare equal even when they are functionally different, and the ordering of INTERVAL s is not always preserved when they are added to dates or timestamps. For example: INTERVAL 30 DAYS = INTERVAL 1 MONTH but DATE '2020-01-01' + INTERVAL 30 DAYS != DATE... - https://man.mtool.work/duckdb/1.3/sql/data_types/interval.html
- UNPIVOT Statement – DuckDB 11024
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...to predetermine ahead of time. In the case of this dataset, the query above would have to change each time a new month is added. The COLUMNS expression can be used to select all columns that are not empid or dept . This enables dynamic unpivoting tha...t will work regardless of how many months are added. The query below returns identical results to the one above. UNPIVOT monthly_sales ON COLUMNS ( * EXCLUDE ( empid , dept )...n be used to determine the IN list of columns dynamically. This will continue to work even if additional month columns are added to the dataset. It produces the same result as the query above. FROM monthly_sales UNPIVOT ( sales FOR month IN ( columns... - https://man.mtool.work/duckdb/1.3/sql/statements/unpivot.html
- List Functions – DuckDB 10157
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...:end] Bracket notation with colon is an alias for list_slice . list[begin:end:step] list_slice in bracket notation with an added step feature. array_pop_back(list) Returns the list without the last element. array_pop_front(list) Returns the list witho...list) Returns a list based on the elements selected by the index_list . list_slice(list, begin, end, step) list_slice with added step feature. list_slice(list, begin, end) Extract a sublist using slice conventions. Negative values are accepted. See sl...mple [4, 5, 6][2:3] Result [5, 6] Alias list_slice list[begin:end:step] Description list_slice in bracket notation with an added step feature. Example [4, 5, 6][:-:2] Result [4, 6] Alias list_slice array_pop_back(list) Description Returns the list wit... - https://man.mtool.work/duckdb/1.3/sql/functions/list.html
- WITH Clause – DuckDB 10157
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...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 WHERE list_contains ( previous_paths.path , node2id ) ) ) SELECT s...is stopped as soon as we reach the end node, we use a window function which checks whether the end node is among the newly added nodes. The following query returns all unweighted shortest paths between nodes 1 (start node) and 8 (end node): WITH RECUR...g (this is impossible for regular recursive CTEs): in a CTE WITH RECURSIVE T(...) USING KEY ... , table T denotes the rows added by the last iteration (as is usual for recursive CTEs), while table recurring.T denotes the union table built so far. Refe... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/with.html
- Aggregate Functions – DuckDB 9723
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...(left-open and right-closed partitions) of the datatype. A boundary at the largest value of the datatype is automatically added when elements larger than all provided boundaries appear, see is_histogram_other_bin . Boundaries may be provided, e.g., v...pairs representing the requested elements and their counts. A catch-all element specific to the data-type is automatically added to count other elements when they appear, see is_histogram_other_bin . histogram_values(source, boundaries) Returns the up...(left-open and right-closed partitions) of the datatype. A boundary at the largest value of the datatype is automatically added when elements larger than all provided boundaries appear, see is_histogram_other_bin . Boundaries may be provided, e.g., v... - https://man.mtool.work/duckdb/1.3/sql/functions/aggregates.html
- Set Operations – DuckDB 9723
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...the to-be-combined queries to have the same number of input columns. If the columns are not of the same type, casts may be added. The result will use the column names from the first query. DuckDB also supports UNION [ALL] BY NAME , which joins columns...instead of by position. UNION BY NAME does not require the inputs to have the same number of columns. NULL values will be added in case of missing columns. UNION The UNION clause can be used to combine rows from multiple queries. The queries are requ... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/setops.html
- Spatial Functions – DuckDB 9290
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...the Z component will be removed. Otherwise, if the input geometry has neither a Z or M component, the new M value will be added to the vertices of the input geometry. ST_Force3DZ Signature GEOMETRY ST_Force3DZ ( geom GEOMETRY , z DOUBLE ) Description...the M component will be removed. Otherwise, if the input geometry has neither a Z or M component, the new Z value will be added to the vertices of the input geometry. ST_Force4D Signature GEOMETRY ST_Force4D ( geom GEOMETRY , z DOUBLE , m DOUBLE ) De...components The following cases apply: If the input geometry has a Z component but no M component, the new M value will be added to the vertices of the input geometry. If the input geometry has a M component but no Z component, the new Z value will be... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/functions.html
- Typecasting – DuckDB 9290
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...an argument that does not match the type of the function but can be cast to the required type. Implicit casts can only be added for a number of type combinations, and is generally only possible when the cast cannot fail. For example, an implicit cast...can be added from INTEGER to DOUBLE – but not from DOUBLE to INTEGER . Consider the function sin(DOUBLE) . This function takes as input... - https://man.mtool.work/duckdb/1.3/sql/data_types/typecasting.html
- CREATE SEQUENCE Statement – DuckDB 9290
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...), ( 'world' ); SELECT * FROM tbl ; The script results in the following table: id s 1 hello 2 world Sequences can also be added using the ALTER TABLE statement . The following example adds an id column and fills it with values generated by the sequen...YCLE are specified, NO CYCLE is the default. increment The optional clause INCREMENT BY increment specifies which value is added to the current sequence value to create a new value. A positive value will make an ascending sequence, a negative one a de... - https://man.mtool.work/duckdb/1.3/sql/statements/create_sequence.html
- Versioning of Extensions – DuckDB 8841
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...ghtly builds before being grouped into a release and pushed to the core repository. Release notes describing what has been added each release should be available to make it easy to understand the difference between versions. Stable Extensions Stable e...pository, github.com/duckdb/duckdb . These extensions are called in-tree. Later, the concept of out-of-tree extensions was added, where extensions were separated into their own repository, which we call out-of-tree. While from a user's perspective, th... - https://man.mtool.work/duckdb/1.3/extensions/versioning_of_extensions.html
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