Results of 1 - 10 of about 12 for ascending (0.003 sec.)
- CREATE SEQUENCE Statement 13672
- The CREATE SEQUENCE statement creates a new sequence number generator. Examples Generate an ascending sequence starting from 1: CREATE SEQUENCE serial; Generate sequence from a given start number: CREATE SEQUENCE serial START 101; Generate
...CYCLE or NO CYCLE The CYCLE option allows the sequence to wrap around when the maxvalue or minvalue has been reached by an ascending or descending sequence respectively. If the limit is reached, the next number generated will be the minvalue or maxvalue ,...ncrement 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 descending sequence. The default value is 1. maxvalue The optional clause MAXVALUE maxvalue det...clause is not supplied or NO MAXVALUE is specified, then default values will be used. The defaults are 2^63 - 1 and -1 for ascending and descending sequences, respectively. minvalue The optional clause MINVALUE minvalue determines the minimum value a sequ... - https://man.mtool.work/duckdb/2.0/sql/statements/create_sequence.html
- ORDER BY Clause 11019
- ORDER BY is an output modifier. Logically it is applied 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 addi
...self. See examples below. NULL Order Modifier By default, DuckDB sorts ASC and NULLS LAST , i.e., the values are sorted in ascending order and NULL values are placed last. For the default ASC direction this matches PostgreSQL. Note, however, that DuckDB k...resses ORDER BY city COLLATE DE; ORDER BY ALL Examples Order from left to right (by address, then by city, then by zip) in ascending order: SELECT * FROM addresses ORDER BY ALL; address city zip 111 Duck Duck Goose Ln Duck Town 11111 111 Duck Duck Goose L... - https://man.mtool.work/duckdb/2.0/sql/query_syntax/orderby.html
- Aggregate Functions 9852
- Examples Produce a single row containing the sum of the amount column: SELECT sum(amount) FROM sales; Produce one row per unique region, containing the sum of amount for each group: SELECT region, sum(amount) FROM sales GROUP BY region; Ret
...ed by ordering . arg_min(arg, val, n) Returns a LIST containing the arg expressions for the "bottom" n rows ordered by val ascending. This function is affected by ordering . arg_min_null(arg, val) Finds the row with the minimum val and calculates the arg...here are no other rows. If n is specified, returns a LIST containing the arg expressions for the top n rows ordered by val ascending, with NULL values of val last. This function is affected by ordering . avg(arg) Calculates the average of all non-null val...s unaffected by distinctness . min(arg, n) Returns a LIST containing the arg values for the "bottom" n rows ordered by arg ascending. product(arg) Calculates the product of all non-null values in arg . This function is affected by ordering . string_agg(ar... - https://man.mtool.work/duckdb/2.0/sql/functions/aggregates.html
- Pragmas 8348
- The PRAGMA statement is a SQL extension adopted by DuckDB from SQLite. PRAGMA statements can be issued in a similar manner to regular SQL statements. PRAGMA commands may alter the internal state of the database engine, and can influence the
...NULLS_FIRST'; SET default_null_order = 'NULLS_LAST_ON_ASC_FIRST_ON_DESC'; Set the default result set ordering direction to ASCENDING or DESCENDING : SET default_order = 'ASCENDING'; SET default_order = 'DESCENDING'; Ordering by Non-Integer Literals By def... - https://man.mtool.work/duckdb/2.0/configuration/pragmas.html
- Indexing 8189
- DuckDB has two types of indexes: zonemaps and ART indexes. Zonemaps DuckDB automatically creates zonemaps (also known as min-max indexes) for the columns of all general-purpose data types . Operations like predicate pushdown into scan opera
...ffect of Ordering For an example, let's repeat the microbenchmark for timestamps with an ordered timestamp column using an ascending order vs. an unordered one. Column type Ordered Storage size Query time DATETIME yes 1.3 GB 0.6 s DATETIME no 3.3 GB 0.9 s... - https://man.mtool.work/duckdb/2.0/guides/performance/indexing.html
- Integration with Ibis 8189
- Ibis is a Python dataframe library that supports 20+ backends, with DuckDB as the default. Ibis with DuckDB provides a Pythonic interface for SQL with great performance. Warning Ibis 12.0.0 and earlier do not support DuckDB 2.0. The example
...──┴───────┘ You can read more about selectors in the docs! order_by order_by arranges the values of one or more columns in ascending or descending order. By default, ibis sorts in ascending order: penguins.order_by(penguins.flipper_length_mm).select( "spe... - https://man.mtool.work/duckdb/2.0/guides/python/ibis.html
- List Functions 8189
- Function Description list[index] Extracts a single list element using a (1-based) index . list[begin[:end][:step]] Extracts a sublist using slice conventions . Negative values are accepted. list1 && list2 Alias for list_has_any . list1 <->
...gr([1, 2, 3], 'string_agg', '-') AS str; 1-2-3 Sorting Lists The function list_sort sorts the elements of a list either in ascending or descending order. In addition, it allows specifying whether NULL values should be moved to the beginning or to the end...rt as in ORDER BY . By default, if no modifiers are provided, DuckDB sorts ASC NULLS LAST . I.e., the values are sorted in ascending order and NULL values are placed last. For ascending order, this matches PostgreSQL's default. The default sort order can... - https://man.mtool.work/duckdb/2.0/sql/functions/list.html
- SELECT Statement 8189
- The SELECT statement retrieves rows from the database. Examples Select all columns from the table tbl : SELECT * FROM tbl; Select the rows from tbl : SELECT j FROM tbl WHERE i = 3; Perform an aggregate grouped by the column i : SELECT i, su
...ically 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 clause indicates at which pos... - https://man.mtool.work/duckdb/2.0/sql/statements/select.html
- Friendly SQL 8012
- DuckDB offers several advanced SQL features and syntactic sugar to make SQL queries more concise. We refer to these colloquially as “friendly SQL”. Several of these features were first introduced by DuckDB, while some are inspired by other
...rg, val, n) and min_by(arg, val, n) to efficiently return the "top" n rows in a group based on a specific column in either ascending or descending order. For example, let's use the following table: SELECT * FROM t1; ┌─────────┬───────┐ │ grp │ val │ │ var... - https://man.mtool.work/duckdb/2.0/sql/dialect/friendly_sql.html
- Expression API 7676
- The Expression class represents an instance of an expression . Why Would I Use the Expression API? Use expressions to build filters and computed columns in Python. They are useful when column names or conditions depend on your code. import
...following order operations can be applied. Operation Description .asc() Indicates that this expression should be sorted in ascending order .desc() Indicates that this expression should be sorted in descending order .nulls_first() Indicates that the nulls... - https://man.mtool.work/duckdb/2.0/clients/python/expression.html
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