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Numeric Types – DuckDB 14469
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... fixed-point decimals does not typically produce numbers with finite decimal expansion. Therefore, DuckDB uses approximate floating-point arithmetic for all divisions that involve fixed-point decimals and accordingly returns floating-point data types. In ... is therefore recommended to stick with a WIDTH of 18 or below, unless there is a good reason for why this is insufficient. Floating-Point Types The data types FLOAT and DOUBLE precision are variable-precision numeric types. In practice, these types are u ... sually implementations of IEEE Standard 754 for Binary Floating-Point Arithmetic (single and double precision, respectively), to the extent that the underlying processor, operating syste ...
https://man.mtool.work/duckdb/1.3/sql/data_types/numeric.html
Numeric Functions – DuckDB 10847
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... They are equivalent when at least one of the operands is a FLOAT or a DOUBLE . When both operands are integers, / performs floating points division ( 5 / 2 = 2.5 ) while // performs integer division ( 5 // 2 = 2 ). Supported Types The modulo, bitwise, an ... the greatest common divisor of x and y . greatest(x1, x2, ...) Selects the largest value. isfinite(x) Returns true if the floating point value is finite, false otherwise. isinf(x) Returns true if the floating point value is infinite, false otherwise. is ... nan(x) Returns true if the floating point value is not a number, false otherwise. lcm(x, y) Computes the least common multiple of x and y . least_common_multi ...
https://man.mtool.work/duckdb/1.3/sql/functions/numeric.html
Non-Deterministic Behavior – DuckDB 9322
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... LECT array_distinct ([ 'A' , 'A' , 'B' , NULL , NULL ]) AS arr ; For this query, both [A, B] and [B, A] are valid results. Floating-Point Aggregate Operations with Multi-Threading Floating-point inaccuracies may produce different results when run in a mu ... ll values of s . However, when executed on multiple threads, the query may return small numbers ( 0 <= z < 10e-16 ) due to floating-point inaccuracies. Working Around Non-Determinism For the majority of use cases, non-determinism is not causing any issue ... Code of Conduct Trademark Use Blog In this article Set Semantics Different Results on Different Platforms: array_distinct Floating-Point Aggregate Operations with Multi-Threading Working Around Non-Determinism ...
https://man.mtool.work/duckdb/1.3/operations_manual/non-deterministic_behavior.h...
PostgreSQL Compatibility – DuckDB 8889
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... SQL dialect closely follows the conventions of the PostgreSQL dialect. The few exceptions to this are listed on this page. Floating-Point Arithmetic DuckDB and PostgreSQL handle floating-point arithmetic differently for division by zero. DuckDB conforms ... to the IEEE Standard for Floating-Point Arithmetic (IEEE 754) for both division by zero and operations involving infinity values. PostgreSQL returns an erro ... Report content issue © 2026 DuckDB Foundation, Amsterdam NL DuckDB Home Code of Conduct Trademark Use Blog In this article Floating-Point Arithmetic Division on Integers UNION of Boolean and Integer Values Implicit Casting on Equality Checks Case Sensiti ...
https://man.mtool.work/duckdb/1.3/sql/dialect/postgresql_compatibility.html
Pragmas – DuckDB 8802
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... ates" : "temp.information_schema.tables" , "position" : "14" , "type" : "Table" , "error_subtype" : "MISSING_ENTRY" } IEEE Floating-Point Operation Semantics DuckDB follows IEEE floating-point operation semantics. If you would like to turn this off, run: ... SET ieee_floating_point_ops = false ; In this case, floating point division by zero (e.g., 1.0 / 0.0 , 0.0 / 0.0 and -1.0 / 0.0 ) will all r ... rch Indexes Verification Object Cache Checkpointing Temp Directory for Spilling Data to Disk Returning Errors as JSON IEEE Floating-Point Operation Semantics Query Verification (for Development) Block Sizes ...
https://man.mtool.work/duckdb/1.3/configuration/pragmas.html
Aggregate Functions – DuckDB 8646
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... ntif(arg) Returns the number of rows in a group where arg is true . favg(arg) Calculates the average using a more accurate floating point summation (Kahan Sum). first(arg) Returns the first value (null or non-null) from arg . This function is affected by ... ordering . fsum(arg) Calculates the sum using a more accurate floating point summation (Kahan Sum). geomean(arg) Calculates the geometric mean of all non-null values in arg . histogram(arg) Ret ... daries) Returns the upper boundaries of the bins and their counts. kahan_sum(arg) Calculates the sum using a more accurate floating point summation (Kahan Sum). last(arg) Returns the last value of a column. This function is affected by ordering . list(ar ...
https://man.mtool.work/duckdb/1.3/sql/functions/aggregates.html
Configuration – DuckDB 8127
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... http_logging_output The file to which HTTP logging output should be saved, or empty to print to the terminal VARCHAR ieee_floating_point_ops Use IEE754-compliant floating point operations (returning NAN instead of errors/NULL). BOOLEAN true integer_divi ... sion Whether or not the / operator defaults to integer division, or to floating point division BOOLEAN false lambda_syntax Configures the use of the deprecated single arrow operator (->) for lambda func ...
https://man.mtool.work/duckdb/1.3/configuration/overview.html
Data Types – DuckDB 8127
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... on number with the given width (precision) and scale, defaults to prec = 18 and scale = 3 DOUBLE FLOAT8 , Double precision floating-point number (8 bytes) FLOAT FLOAT4 , REAL Single precision floating-point number (4 bytes) HUGEINT Signed sixteen-byte in ...
https://man.mtool.work/duckdb/1.3/sql/data_types/overview.html
Interval Functions – DuckDB 8127
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... e_part . extract(part FROM interval) Alias of date_part . epoch(interval) Get total number of seconds, as double precision floating point number, in interval. to_centuries(integer) Construct a century interval. to_days(integer) Construct a day interval. ... t('month' FROM INTERVAL '14 months') Result 2 epoch(interval) Description Get total number of seconds, as double precision floating point number, in interval. Example epoch(INTERVAL 5 HOUR) Result 18000.0 to_centuries(integer) Description Construct a cen ...
https://man.mtool.work/duckdb/1.3/sql/functions/interval.html
Relational API – DuckDB 7711
This page is for DuckDB 1.3, which is outdated. Switch to the current version . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Overview ... nct rows from this relation object favg Computes the average of all values present in a given column using a more accurate floating point summation (Kahan Sum) first Returns the first value of a given column first_value Computes the first value within th ... e group or partition fsum Computes the sum of all values present in a given column using a more accurate floating point summation (Kahan Sum) geomean Computes the geometric mean over all values present in a given column histogram Comput ... . duckdb . DuckDBPyRelation Description Computes the average of all values present in a given column using a more accurate floating point summation (Kahan Sum) Parameters column : str The column name to calculate the average on. groups : str, default: '' ...
https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
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