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Interval Functions 12353
This section describes functions and operators for examining and manipulating INTERVAL values. Interval Operators The table below shows the available mathematical operators for INTERVAL types. Operator Description Example Result + Addition ... a millisecond interval. to_minutes(integer) Construct a minute interval. to_months(integer) Construct a month interval. to_quarters(integer ) Construct an interval of integer quarters. to_seconds(integer) Construct a second interval. to_weeks(integer) Co ... _months(integer) | Description | Construct a month interval. | | Example | to_months(5) | | Result | INTERVAL 5 MONTH | to_quarters(integer) | Description | Construct an interval of integer quarters. | | Example | to_quarters(5) | | Result | INTERVAL 1 Y ...
https://man.mtool.work/duckdb/2.0/sql/functions/interval.html
Interval Type 8617
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. ... _000)) % 60 microsecond #microseconds % (60 * 1_000_000) Additionally, datepart may be used to extract centuries, decades, quarters, seconds and milliseconds from INTERVAL s. However, these parts are not required when reassembling the original INTERVAL . ... , interval) // 1_000_000 millisecond datepart('microsecond', interval) // 1_000 All units use 0-based indexing, except for quarters, which use 1-based indexing. For example: SELECT datepart('decade', INTERVAL 12 YEARS), -- returns 1 datepart('year', INTE ...
https://man.mtool.work/duckdb/2.0/sql/data_types/interval.html
UNPIVOT Statement 8451
The UNPIVOT statement allows multiple columns to be stacked into fewer columns. In the basic case, multiple columns are stacked into two columns: a NAME column (which contains the name of the source column) and a VALUE column (which contain ... the number of each month within the quarter (month 1, 2, or 3), and a separate row for each quarter. Since there are fewer quarters than months, this does make the dataset longer, but not as long as the above. To accomplish this, multiple sets of columns ... the number of each month within the quarter (month 1, 2, or 3), and a separate row for each quarter. Since there are fewer quarters than months, this does make the dataset longer, but not as long as the above. To accomplish this, multiple columns are inc ...
https://man.mtool.work/duckdb/2.0/sql/statements/unpivot.html
Date Part Functions 7526
The date_part , date_trunc and date_diff functions can be used to extract or manipulate parts of temporal types such as TIMESTAMP , TIMESTAMPTZ , DATE and INTERVAL . The parts to be extracted or manipulated are specified by one of the strin ... 3 minute Minutes min , minutes , mins , m 59 month Gregorian month mon , months , mons 8 quarter Quarter of the year (1-4) quarters 3 second Seconds sec , seconds , secs , s 44 year Gregorian year yr , y , years , yrs 2021 Part Specifiers Only Usable as ...
https://man.mtool.work/duckdb/2.0/sql/functions/datepart.html
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