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Bitstring Functions 13282
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 ... preserved. Bitstring Operators The table below shows the available mathematical operators for BIT type. Operator Description Example Result & B ... itwise AND '10101'::BITSTRING & '10001'::BITSTRING 10001 | Bitwise OR '1011'::BITSTRING | '0001'::BITSTRING 1011 xor Bitwise XOR xor('101'::BITSTRING, ' ... 001'::BITSTRING) 100 ~ Bitwise NOT ~('101'::BITSTRING) 010 << Bitwise shift left '1001011'::BITSTRING << 3 1011000 >> Bitwise shift right ...
https://man.mtool.work/duckdb/2.0/sql/functions/bitstring.html
Bitstring Type 11807
Name Aliases Description BITSTRING BIT Variable-length strings of 1s and 0s Bitstrings are strings of 1s and 0s. The bit type data is of variable length. A bitstring value requires 1 byte for each group of 8 bits, plus a fixed amount to sto ... re some metadata. By default bitstrings will not be padded with zeroes. Bitstrings can be very large, having the same size restrictions as BLOB s. Creating a Bit ... string A string encoding a bitstring can be cast to a BITSTRING : SELECT '101010'::BITSTRING AS b; b 101010 A bitstring can also be created using a bit string ... is a string of 1s and 0s prefixed with B : SELECT B'101010' AS b; b 101010 New Starting with DuckDB 2.0, B'…' literals are BITSTRING values. In earlier versions, B'0101' was parsed as the VARCHAR string 'b0101' . Creating a BITSTRING with a predefined len ...
https://man.mtool.work/duckdb/2.0/sql/data_types/bitstring.html
Functions 8819
Function Syntax Function Chaining via the Dot Operator DuckDB supports the dot syntax for function chaining. This allows the function call fn(arg1, arg2, arg3, ...) to be rewritten as arg1.fn(arg2, arg3, ...) . For example, take the followi ... that are set bit_length scalar BIGINT [col0] [VARCHAR] Number of bits in a string bit_position scalar INTEGER [substring, bitstring] [BIT, BIT] Returns first starting index of the specified substring within bits, or zero if it is not present. The first ( ... leftmost) bit is indexed 1 bitstring scalar BIT [bitstring, length] [VARCHAR, INTEGER] Pads the bitstring until the specified length ...
https://man.mtool.work/duckdb/2.0/sql/functions/overview.html
Relational API 8179
The Relational API builds a query one step at a time from Python. A relation, a DuckDBPyRelation , is a piece of SQL text: the methods of the Transformation and Functions sections return a new relation whose text extends the one they were c ... OR of all bits present in a given expression. bit_xor Computes the bitwise XOR of all bits present in a given expression. bitstring_agg Computes a bitstring with bits set for each distinct value in a given expression. bool_and Computes the logical AND of ... y │ bit_xor(id) │ │ varchar │ int32 │ ├──────────┼─────────────┤ │ clothing │ 0 │ │ tools │ 7 │ └──────────┴─────────────┘ bitstring_agg bitstring_agg(self, expression: str, min: int | None = None, max: int | None = None, groups: str = '', window_spec: st ... r = '', projected_columns: str = '') -> DuckDBPyRelation Computes a bitstring with bits set for each distinct value in a given expression. Parameters expression : str The column or expression to aggre ...
https://man.mtool.work/duckdb/2.0/clients/python/relational_api.html
Aggregate Functions 8161
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 ... the bitwise OR of all bits in a given expression. bit_xor(arg) Returns the bitwise XOR of all bits in a given expression. bitstring_agg(arg) Returns a bitstring whose length corresponds to the range of the non-null (integer) values, with bits set at the ... or(A) | bit_xor(arg) | Description | Returns the bitwise XOR of all bits in a given expression. | | Example | bit_xor(A) | bitstring_agg(arg) | Description | Returns a bitstring whose length corresponds to the range of the non-null (integer) values, with ... bits set at the location of each (distinct) value. | | Example | bitstring_agg(A) | bool_and(arg) | Description | Returns true if every input value is true , otherwise false . | | Example | bool_an ...
https://man.mtool.work/duckdb/2.0/sql/functions/aggregates.html
Data Types 7966
General-Purpose Data Types The table below shows all the built-in general-purpose data types. The alternatives listed in the aliases column can be used to refer to these types as well, however, note that the aliases are not part of the SQL ... might not be accepted by other database engines. Name Aliases Description BIGINT INT8 , LONG Signed eight-byte integer BIT BITSTRING String of 1s and 0s BLOB BYTEA , BINARY , VARBINARY Variable-length binary data BIGNUM Variable-length integer BOOLEAN BOO ...
https://man.mtool.work/duckdb/2.0/sql/data_types/overview.html
PHP Client (PDO) 7930
The PHP DuckDB PDO extension is a tertiary client and is maintained by a third-party. To use pdo_duckdb , follow the instructions below . The latest version of pdo_duckdb supports DuckDB 2.0.0. pdo_duckdb is a native DuckDB database driver ... types are supported:\ Text, Numeric, Date, Time, Interval, JSON, Array, Struct, Map, List, Enum, Variant, Geometry, Union, Bitstring, Blob and Boolean GitHub: pdo-duckdb-php Packagist: pdo-duckdb-php Installation and setup pdo_duckdb is fully compatible w ...
https://man.mtool.work/duckdb/2.0/clients/tertiary_clients/php_pdo.html
Literal Types 7930
DuckDB has special literal types for representing NULL , integer and string literals in queries. These have their own binding and conversion rules. Prior to DuckDB version 0.10.0, integer and string literals behaved identically to the INTEG ... ───────────────────────┘ Implicit concatenation only works for single-quoted string literals, not with dollar-quoted ones. Bit String and Hex String Literals New Starting with DuckDB 2.0, bit string and hex string literals are supported. In earlier versio ... ' and X'CAFE' were parsed as the VARCHAR strings 'b0101' and 'xCAFE' , respectively. A string literal prefixed with B is a bit string literal, which produces a BITSTRING value. It may only contain the characters 0 and 1 . A string literal prefixed with X ...
https://man.mtool.work/duckdb/2.0/sql/data_types/literal_types.html
Migrating to DuckDB 2.0 7912
DuckDB 2.0.0 is packed with new features and performance improvements, including query optimization and asynchronous I/O. It also ships a small set of breaking changes, most notably a new default storage format, which DuckDB versions before ... 2 (previously 720 ). Use parentheses to get the old behavior, e.g., (2 * 3)! . X'…' and B'…' literals now produce BLOB and BITSTRING values instead of the VARCHAR strings 'x…' and 'b…' . If you would like to revert to the old parser, use the legacy_parser ...
https://man.mtool.work/duckdb/2.0/operations_manual/migration.html
Node.js Client (Neo) 7841
Installation To use the DuckDB Node.js client, visit the Node.js installation page . The latest stable version of the DuckDB Node.js (Neo) client is 2.0.0. An API for using DuckDB in Node.js . The primary package, @duckdb/node-api , is a hi ... { const bools = columnValue.toBools(); // array of booleans const bits = columnValue.toBits(); // array of 0s and 1s const bitString = columnValue.toString(); // string of '0's and '1's } if (columnType.typeId === DuckDBTypeId.BLOB) { const blobBytes = co ...
https://man.mtool.work/duckdb/2.0/clients/node_neo/overview.html
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