Results of 1 - 10 of about 12 for Extracts (0.003 sec.)
- Text Functions 14274
- Text Functions and Operators This section describes functions and operators for examining and manipulating STRING values . Function Description string[index] Extracts a single character using a (1-based) index . string[begin:end] Extracts a
...input results in NULL . See also concat(arg1, arg2, ...) and list_concat(list1, list2, ...) . array_extract(string, index) Extracts a single character from a string using a (1-based) index . array_slice(list, begin, end) Extracts a sublist or substring u...ppercase characters are considered smaller than lowercase characters and collations are not supported. left(string, count) Extracts the left-most count characters. left_grapheme(string, count) Extracts the left-most count grapheme clusters. len(string) A...(string) Reverses the string . right(string, count) Extract the right-most count characters. right_grapheme(string, count) Extracts the right-most count grapheme clusters. rpad(string, count, character) Pads the string with the character on the right unt... - https://man.mtool.work/duckdb/2.0/sql/functions/text.html
- List Functions 9586
- 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 <->
...ontains(list, element) Alias for list_contains . array_distinct(list) Alias for list_distinct . array_extract(list, index) Extracts the index th (1-based) value from the list . array_filter(list, lambda(x)) Alias for list_filter . array_grade_up(list[, c...ction sem to the list . list_skewness(list) Applies aggregate function skewness to the list . list_slice(list, begin, end) Extracts a sublist or substring using slice conventions . Negative values are accepted. list_slice(list, begin, end, step) list_sli...arg, ...) Identical to list_value, but generated as part of unpivot for better error messages. list[index] | Description | Extracts a single list element using a (1-based) index . | | Example | [4, 5, 6][3] | | Result | 6 | | Alias | list_extract | list[... - https://man.mtool.work/duckdb/2.0/sql/functions/list.html
- JSON Processing Functions 9462
- JSON Extraction Functions There are two extraction functions, which have their respective operators. The operators can only be used if the string is stored as the JSON logical type. These functions support the same two location notations as
...Returns true if the supplied path exists in the json , and false otherwise. json_extract(json, path) json_extract_path -> Extracts JSON from json at the given path . If path is a LIST , the result will be a LIST of JSON . json_extract_string(json, path)...json_extract_path_text ->> Extracts VARCHAR from json at the given path . If path is a LIST , the result will be a LIST of VARCHAR . json_value(json, path) Ex...at the supplied path is not a scalar value, it will return NULL . Note that the arrow operator -> , which is used for JSON extracts, has a low precedence as it is also used in lambda functions . Therefore, you need to surround the -> operator with parent... - https://man.mtool.work/duckdb/2.0/data/json/json_functions.html
- Bitstring Functions 8843
- This section describes functions and operators for examining and manipulating BITSTRING values. Bitstrings must be of equal length when performing the bitwise operands AND, OR and XOR. When bit shifting, the original length of the string is
...ftmost) bit is indexed 1. bitstring(bitstring, length) Returns a bitstring of determined length. get_bit(bitstring, index) Extracts the nth bit from bitstring; the first (leftmost) bit is indexed 0. length(bitstring) Alias for bit_length . octet_length(b...ned length. | | Example | bitstring('1010'::BITSTRING, 7) | | Result | 0001010 | get_bit(bitstring, index) | Description | Extracts the nth bit from bitstring; the first (leftmost) bit is indexed 0. | | Example | get_bit('0110010'::BITSTRING, 2) | | Resu... - https://man.mtool.work/duckdb/2.0/sql/functions/bitstring.html
- Utility Functions 8843
- Scalar Utility Functions The functions below are difficult to categorize into specific function types and are broadly useful. Name Description alias(column) Return the name of the column. can_cast_implicitly(source_value, target_value) Whet
...7 . uuidv7() Return a random UUIDv7 similar to this: 81964ebe-00b1-7e1d-b0f9-43c29b6fb8f5 . uuid_extract_timestamp(uuidv7) Extracts TIMESTAMP WITH TIME ZONE from a UUIDv7 value. uuid_extract_version(uuid) Extracts UUID version ( 4 or 7 ). version() Retur...00b1-7e1d-b0f9-43c29b6fb8f5 . | | Example | uuidv7() | | Result | various | uuid_extract_timestamp(uuidv7) | Description | Extracts TIMESTAMP WITH TIME ZONE from a UUIDv7 value. | | Example | uuid_extract_timestamp(uuidv7()) | | Result | 2025-04-19 15:51...:20.07+00 | uuid_extract_version(uuid) | Description | Extracts UUID version ( 4 or 7 ). | | Example | uuid_extract_version(uuidv7()) | | Result | 7 | version() | Description | Return th... - https://man.mtool.work/duckdb/2.0/sql/functions/utility.html
- Overview of DuckDB Internals 8207
- Tip For a detailed explanation of DuckDB internals, see the Design and Implementation of DuckDB Internals ("DiDi") library entry. On this page is a brief description of the internals of the DuckDB engine. Parser The parser converts a query
...mming. Specifically, the DPhyp algorithm from the paper Dynamic Programming Strikes Back is used. Common Sub Expressions : Extracts common subexpressions from projection and filter nodes to prevent unnecessary duplicate execution. In Clause Rewriter : Re... - https://man.mtool.work/duckdb/2.0/internals/overview.html
- Deploy as Native Image 8083
- Overview The JDBC driver runs inside GraalVM Native Image executables. Graal Native Image compiles a Java application ahead of time into a standalone binary that starts in milliseconds and requires no JVM on the target machine, which suits
...f them adds roughly 260 MB to the executable. This option produces a single self contained file, around 120 MB. The driver extracts the library to a temporary directory when the first connection opens, which adds up to a second of startup time and requir... - https://man.mtool.work/duckdb/2.0/clients/java/deploy_native_image.html
- Timestamp Functions 8083
- This section describes functions and operators for examining and manipulating TIMESTAMP values . See also the related TIMESTAMPTZ functions . Timestamp Operators The table below shows the available mathematical operators for TIMESTAMP types
...(timestamp) Subtract from current_date. ago(interval) Subtracts an interval from the current timestamp. century(timestamp) Extracts the century of a timestamp. current_localtimestamp() Returns the current timestamp (at the start of the transaction). date...R) | | Result | 2024-11-30 12:28:48.895 (if current time is 2024-11-30 13:28:48.895 ) | century(timestamp) | Description | Extracts the century of a timestamp. | | Example | century(TIMESTAMP '1992-03-22') | | Result | 20 | current_localtimestamp() | Des... - https://man.mtool.work/duckdb/2.0/sql/functions/timestamp.html
- Interval Type 7818
- 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 INTERVAL can be constructed by providing amounts together with units.
...this, the following query generates an INTERVAL called period by summing random amounts of the three basis units. It then extracts the aforementioned six parts from period , adds them back together, and confirms that the result is always equal to the or... - https://man.mtool.work/duckdb/2.0/sql/data_types/interval.html
- CSV Auto Detection 7694
- When using read_csv , the system tries to automatically infer how to read the CSV file using the CSV sniffer . This step is necessary because CSV files are not self-describing and come in many different dialects. The auto-detection works ro
...he values contain a DATE value for the FlightDate column. As such – the system defines the first row as the header row and extracts the column names from the header row. In files that do not have a header row, the column names are generated as column0 ,... - https://man.mtool.work/duckdb/2.0/data/csv/auto_detection.html
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