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Date Part Functions 12795
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 ... r Description Synonyms Example century Gregorian century cent , centuries , c 21 day Gregorian day days , d , dayofmonth 3 decade Gregorian decade dec , decades , decs 202 hour Hours hr , hours , hrs , h 11 microseconds Sub-minute microseconds microsec ... ek(date) Numeric weekday (Sunday = 0, Saturday = 6). dayofyear(date) Day of the year (starts from 1, i.e., January 1 = 1). decade(date) Decade (year / 10). epoch(date) Seconds since 1970-01-01. era(date) Calendar era. hour(date) Hours. isodow(date) Num ... ption | Day of the year (starts from 1, i.e., January 1 = 1). | | Example | dayofyear(DATE '1992-02-15') | | Result | 46 | decade(date) | Description | Decade (year / 10). | | Example | decade(DATE '1992-02-15') | | Result | 199 | epoch(date) | Descrip ...
https://man.mtool.work/duckdb/2.0/sql/functions/datepart.html
Interval Functions 8787
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 ... to the next larger unit. to_centuries(integer) Construct a century interval. to_days(integer) Construct a day interval. to_decades(integer) Construct a decade interval. to_hours(integer) Construct an hour interval. to_microseconds(integer) Construct a ... EAR | to_days(integer) | Description | Construct a day interval. | | Example | to_days(5) | | Result | INTERVAL 5 DAY | to_decades(integer) | Description | Construct a decade interval. | | Example | to_decades(5) | | Result | INTERVAL 50 YEAR | to_hour ...
https://man.mtool.work/duckdb/2.0/sql/functions/interval.html
Interval Type 8475
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. ... 0 * 1_000_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 ... xtracted parts would generally be larger than the original period . Part Formula century datepart('year', interval) // 100 decade datepart('year', interval) // 10 quarter datepart('month', interval) // 3 + 1 second datepart('microsecond', interval) // ... l) // 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', INTERVAL 12 YEARS), -- returns 12 datepart('second', INTERVAL 1_234 MI ...
https://man.mtool.work/duckdb/2.0/sql/data_types/interval.html
Loops 8015
Loops can be used in sqllogictests when it is required to execute the same query many times but with slight modifications in constant values. For example, suppose we want to fire off 100 queries that check for the presence of the values 0.. ... art of a loop) endloop Similarly, foreach can be used to iterate over a set of values. foreach partcode millennium century decade year quarter month day hour minute second millisecond microsecond epoch query III SELECT i, date_part('${partcode}', i) AS ...
https://man.mtool.work/duckdb/2.0/dev/sqllogictest/loops.html
Python Client API 7850
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 ... yofweek': ('dayofweek', 0, ['DATE']), 'dayofyear': ('dayofyear', 0, ['DATE']), 'days_in_month': ('days_in_month', 0, []), 'decade': ('decade', 0, ['DATE']), 'diff': ('date_diff', 1, ['VARCHAR', 'DATE', 'DATE']), 'epoch': ('epoch', 0, ['DATE']), 'epoch_ ... : dayofyear . days_in_month ( * args : ValueOrExpr ) → Expression How many days the date's month has. SQL: days_in_month . decade ( * args : ValueOrExpr ) → Expression Extract the decade component from a date or timestamp. SQL: decade . diff ( part : V ...
https://man.mtool.work/duckdb/2.0/clients/python/reference/
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