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- Aggregate Functions 12889
- 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
...is affected by ordering . histogram(arg) Returns a MAP of key-value pairs representing buckets and counts. histogram(arg, boundaries) Returns a MAP of key-value pairs representing the provided upper boundaries and counts of elements in the corresponding b...he 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., via equi_width_bins . histogram_exact(arg, elements...escription | Returns a MAP of key-value pairs representing buckets and counts. | | Example | histogram(A) | histogram(arg, boundaries) | Description | Returns a MAP of key-value pairs representing the provided upper boundaries and counts of elements in the... - https://man.mtool.work/duckdb/2.0/sql/functions/aggregates.html
- Time Functions 11423
- This section describes functions and operators for examining and manipulating TIME values . Time Operators The table below shows the available mathematical operators for TIME types. Operator Description Example Result + addition of an INTER
...ction) in the local time zone, as a TIME value without a time zone. date_diff(part, starttime, endtime) The number of part boundaries between starttime and endtime , inclusive of the larger time and exclusive of the smaller time. date_part(part, time) Get...| | Alias | localtime (no parentheses necessary) | date_diff(part, starttime, endtime) | Description | The number of part boundaries between starttime and endtime , inclusive of the larger time and exclusive of the smaller time. | | Example | date_diff('h... - https://man.mtool.work/duckdb/2.0/sql/functions/time.html
- Date Functions 9367
- This section describes functions and operators for examining and manipulating DATE values. Date Operators The table below shows the available mathematical operators for DATE types. Operator Description Example Result + addition of days (int
...interval) Add the interval to the date and return a DATETIME value. date_diff(part, startdate, enddate) The number of part boundaries between startdate and enddate , inclusive of the larger date and exclusive of the smaller date. date_part(part, date) Get...NTERVAL 2 MONTH) | | Result | 1992-11-15 00:00:00 | date_diff(part, startdate, enddate) | Description | The number of part boundaries between startdate and enddate , inclusive of the larger date and exclusive of the smaller date. | | Example | date_diff('m... - https://man.mtool.work/duckdb/2.0/sql/functions/date.html
- Timestamp Issues 8491
- Timestamp with Time Zone Promotion Casts Working with time zones in SQL can be quite confusing at times. For example, when filtering to a date range, one might try the following query: SET timezone = 'America/Los_Angeles'; CREATE TABLE time
...o begin <= x AND x <= end -- not begin <= x AND x < end To avoid this problem, make sure you are explicit about comparison boundaries instead of using BETWEEN .... - https://man.mtool.work/duckdb/2.0/guides/sql_features/timestamps.html
- Timestamp Functions 8491
- 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
...the current timestamp (at the start of the transaction). date_diff(part, starttimestamp, endtimestamp) The number of part boundaries between starttimestamp and endtimestamp , inclusive of the larger timestamp and exclusive of the smaller timestamp. date_p...Result | 2024-11-30 13:28:48.895 | date_diff(part, starttimestamp, endtimestamp) | Description | The signed number of part boundaries between starttimestamp and endtimestamp , inclusive of the larger timestamp and exclusive of the smaller timestamp. | | Ex... - https://man.mtool.work/duckdb/2.0/sql/functions/timestamp.html
- Timestamp with Time Zone Functions 8187
- This section describes functions and operators for examining and manipulating TIMESTAMP WITH TIME ZONE (or TIMESTAMPTZ ) values . See also the related TIMESTAMP functions . Time zone support is provided by the built-in ICU extension . In th
...estamps. age(timestamptz) Subtract from current_date. date_diff(part, starttimestamptz, endtimestamptz) The number of part boundaries between starttimestamptz and endtimestamptz inclusive of the larger timestamp and exclusive of the smaller timestamp. date...1 month 27 days 12:39:00.844 | date_diff(part, starttimestamptz, endtimestamptz) | Description | The signed number of part boundaries between starttimestamptz and endtimestamptz , inclusive of the larger timestamp and exclusive of the smaller timestamp. |... - https://man.mtool.work/duckdb/2.0/sql/functions/timestamptz.html
- Utility Functions 8187
- 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
...sion. error(message) Throws the given error message . equi_width_bins(min, max, bincount, nice := false) Returns the upper boundaries of a partition of the interval [min, max] into bin_count equal-sized subintervals (for use with, e.g., histogram ). If nic...| | Example | error('access_mode') | equi_width_bins(min, max, bincount, nice := false) | Description | Returns the upper boundaries of a partition of the interval [min, max] into bin_count equal-sized subintervals (for use with, e.g., histogram ). If nic... - https://man.mtool.work/duckdb/2.0/sql/functions/utility.html
- Writing to Iceberg 7901
- The DuckDB iceberg extension supports writing to Iceberg tables when an Iceberg catalog is attached. Writing to a table read directly from storage with iceberg_scan is not supported: the catalog is required to commit the new table metadata.
...roup-size-bytes table properties are honored for both partitioned and unpartitioned tables. Files are rotated at row-group boundaries, so if the row-group size exceeds the target file size, DuckDB caps the row-group size to the target file size. Iceberg V3... - https://man.mtool.work/duckdb/2.0/core_extensions/iceberg/writing_to_iceberg.htm...
- Interval Type 7901
- 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.
...xtracting a part of the INTERVAL difference between two TIMESTAMP s is not equivalent to computing the number of partition boundaries between the two TIMESTAMP s for the corresponding unit, as computed by the datediff function: sql SELECT datediff('day', T... - https://man.mtool.work/duckdb/2.0/sql/data_types/interval.html
- Python Client API 6435
- Connection class duckdb. Appender Bases: object append_row ( self , * args ) → None Buffer one row, one value per column, each converted as an executemany parameter would be append_rows ( self , rows : object ) → None Buffer each row of an
...a date or timestamp. SQL: decade . diff ( part : ValueOrExpr , * args : ValueOrExpr ) → Expression The number of partition boundaries between the timestamps. Arguments: part, enddate. SQL: date_diff . epoch ( * args : ValueOrExpr ) → Expression Extract the... - https://man.mtool.work/duckdb/2.0/clients/python/reference/
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