Results of 1 - 10 of about 87 for Date (0.005 sec.)
- Date Functions 11934
- 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
...egers) DATE '1992-03-22' + 5 1992-03-27 + addition of AN INTERVAL DATE '1992-03-22' + INTERVAL 5 DAY 1992-03-27 00:00:00 + addition of...a variable INTERVAL SELECT DATE '1992-03-22' + INTERVAL (d.days) DAY FROM (VALUES (5), (11)) d(days) 1992-03-27 00:00:00 and 1992-04-02 00:00:00 - subtrac...tion of DATE s DATE '1992-03-27' - DATE '1992-03-22' 5 - subtraction of an INTERVAL DATE '1992-03-27' - INTERVAL 5 DAY 1992-03-22 00:00... - https://man.mtool.work/duckdb/2.0/sql/functions/date.html
- Date Part Functions 11518
- 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
...nce there are no infinite integer values in DuckDB, NULL s are returned for infinite timestamps. Part Specifiers Usable as Date Part Specifiers and in Intervals Specifier Description Synonyms Example century Gregorian century cent , centuries , c 21...3 second Seconds sec , seconds , secs , s 44 year Gregorian year yr , y , years , yrs 2021 Part Specifiers Only Usable as Date Part Specifiers Specifier Description Synonyms Example dayofweek Day of the week (Sunday = 0, Saturday = 6) weekday , dow...ITH TIME ZONE . Part Functions There are dedicated extraction functions to get certain subfields: Name Description century(date) Century. day(date) Day. dayofmonth(date) Day (synonym). dayofweek(date) Numeric weekday (Sunday = 0, Saturday = 6). dayof... - https://man.mtool.work/duckdb/2.0/sql/functions/datepart.html
- Merge Statement for SCD Type 2 10349
- This is a practical, step-by-step guide to using DuckDB's MERGE statement (introduced in v1.4.0) to perform upserts and build Slowly Changing Dimension Type 2 (SCD Type 2) tables . Type 2 SCDs let you keep full historical versions of record
...hen it changed and for how long it was in a particular state. Why Use MERGE in DuckDB? Single SQL statement for INSERT , UPDATE , and soft DELETE (upsert and expire). Much cleaner and faster than equivalent Python/Pandas logic. Full history tracking...table/query ON Join condition (usually primary/business key + current flag) WHEN MATCHED Row exists in both → typically UPDATE (or DELETE) WHEN NOT MATCHED BY TARGET New row (insert) WHEN NOT MATCHED BY SOURCE Row disappeared → soft-delete/expire ol...d version RETURNING merge_action Optional: shows what happened to each row (INSERT/UPDATE/DELETE) Build an SCD Type 2 Dimension Table We'll track ducks and preserve history whenever their name, breed, or location... - https://man.mtool.work/duckdb/2.0/guides/sql_features/merge.html
- Date Types 9623
- Name Aliases Description DATE Calendar date (year, month, day) A date specifies a combination of year, month and day. DuckDB follows the SQL standard's lead by counting dates exclusively in the Gregorian calendar, even for years before that
...calendar was in use. Dates can be created using the DATE keyword, where the data must be formatted according to the ISO 8601 format ( YYYY-MM-DD )....SELECT DATE '1992-09-20'; Special Values There are also three special date values that can be used on input: Input string Description...epoch 1970-01-01 (Unix system day zero) infinity Later than all other dates -infinity Earlier than all other dates The values infinity and -infinity are specially represented inside the system and... - https://man.mtool.work/duckdb/2.0/sql/data_types/date.html
- Types 9596
- DuckDB is a strongly typed database system. As such, every column has a single type specified. This type is constant over the entire column. That is to say, a column that is labeled as an INTEGER column will only contain INTEGER values. Duc
...GER = 8, DUCKDB_TYPE_UBIGINT = 9, DUCKDB_TYPE_FLOAT = 10, DUCKDB_TYPE_DOUBLE = 11, DUCKDB_TYPE_TIMESTAMP = 12, DUCKDB_TYPE_DATE = 13, DUCKDB_TYPE_TIME = 14, DUCKDB_TYPE_INTERVAL = 15, DUCKDB_TYPE_HUGEINT = 16, DUCKDB_TYPE_UHUGEINT = 32, DUCKDB_TYPE_V...duckdb_result_chunk_count ( duckdb_result result ); duckdb_result_type duckdb_result_return_type ( duckdb_result result ); Date Time Timestamp Helpers duckdb_date_struct duckdb_from_date ( duckdb_date date ); duckdb_date duckdb_to_date ( duckdb_date_...struct date ); bool duckdb_is_finite_date ( duckdb_date date ); duckdb_time_struct duckdb_from_time ( duckdb_time time ); duckdb_time_... - https://man.mtool.work/duckdb/2.0/clients/c/types.html
- Python Client API 9596
- 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
...tr = 'insert' , key : list | None = None ) → _duckdb.Appender Create an appender that buffers rows and inserts, upserts, updates or deletes them in the named table at each flush array_type ( self , type : _duckdb._sqltypes.DuckDBPyType , size : int )...decimal type with ‘width' and ‘scale' property description Get result set attributes, mainly column names df ( self , * , date_as_object : bool = False ) → object Fetch a result as DataFrame following execute() disable_profiling ( self ) → None Disa...ts ( self , query : str ) → list Parse the query string and extract the Statement object(s) produced fetch_df ( self , * , date_as_object : bool = False ) → object Fetch a result as DataFrame following execute() fetch_df_chunk ( self , vectors_per_ch... - https://man.mtool.work/duckdb/2.0/clients/python/reference/
- Timestamp with Time Zone Functions 9381
- 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
...e these functions do not involve binning or display, they are always available. Name Description current_timestamp Current date and time (start of current transaction). get_current_timestamp() Current date and time (start of current transaction). gre...with time zone is infinite, false otherwise. least(timestamptz, timestamptz) The earlier of two timestamps. now() Current date and time (start of current transaction). timetz_byte_comparable(timetz) Converts a TIME WITH TIME ZONE to a UBIGINT sort k...ey. to_timestamp(double) Converts seconds since the epoch to a timestamp with time zone. transaction_timestamp() Current date and time (start of current transaction). current_timestamp | Description | Current date and time (start of current transac... - https://man.mtool.work/duckdb/2.0/sql/functions/timestamptz.html
- Complete API 8722
- This page contains the reference for DuckDB's C API. The reference contains several deprecation notices. These concern methods whose long-term availability is not guaranteed as they may be removed in the future. That said, DuckDB's develope
...* result , idx_t col , idx_t row ); double duckdb_value_double ( duckdb_result * result , idx_t col , idx_t row ); duckdb_date duckdb_value_date ( duckdb_result * result , idx_t col , idx_t row ); duckdb_time duckdb_value_time ( duckdb_result * resu...int32_t duckdb_string_t_length ( duckdb_string_t string ); const char * duckdb_string_t_data ( duckdb_string_t * string ); Date Time Timestamp Helpers duckdb_date_struct duckdb_from_date ( duckdb_date date ); duckdb_date duckdb_to_date ( duckdb_date_...struct date ); bool duckdb_is_finite_date ( duckdb_date date ); duckdb_time_struct duckdb_from_time ( duckdb_time time ); duckdb_time_... - https://man.mtool.work/duckdb/2.0/clients/c/api.html
- SQL Introduction 8601
- This page provides an overview of how to perform simple operations in SQL. This tutorial is only intended to give you an introduction and is in no way a complete tutorial on SQL. This tutorial is adapted from the PostgreSQL tutorial . DuckD
...ity VARCHAR, temp_lo INTEGER, -- minimum temperature on a day temp_hi INTEGER, -- maximum temperature on a day prcp FLOAT, date DATE ); You can enter this into the shell with the line breaks. The command is not terminated until the semicolon. White s...ithout a decimal point). FLOAT columns store single precision floating-point numbers (i.e., numbers with a decimal point). DATE stores a date (i.e., year, month, day combination). DATE only stores the specific day, not a time associated with that day.... DuckDB supports the standard SQL types INTEGER , SMALLINT , FLOAT , DOUBLE , DECIMAL , CHAR(n) , VARCHAR(n) , DATE , TIME and TIMESTAMP . The second example will store cities and their associated geographical location: CREATE TABLE citie... - https://man.mtool.work/duckdb/2.0/sql/introduction.html
- Window Functions 8453
- DuckDB supports window functions , which can use multiple rows to calculate a value for each row. Window functions are blocking operators , i.e., they require their entire input to be buffered, making them one of the most memory-intensive o
...estrict the range that the secondary ordering applies to. -- Compare each athlete's time in an event with the best time to date SELECT event, date, athlete, time, first_value(time ORDER BY time ASC) OVER w AS record_time, first_value(athlete ORDER BY...time ASC) OVER w AS record_athlete, FROM meet_results WINDOW w AS (PARTITION BY event ORDER BY datetime) ORDER BY ALL; Note that there is no comma separating the arguments from the ORDER BY clause. Nulls All general-purpos...REATE TABLE "Generation History" AS FROM 'power-plant-generation-history.csv'; After partitioning by plant and ordering by date, it will have this layout: Plant Date MWh Boston 2019-01-02 564337 Boston 2019-01-03 507405 Boston 2019-01-04 528523 Bosto... - https://man.mtool.work/duckdb/2.0/sql/functions/window_functions.html
DuckDB 2.0 Documentation / man.mtool.work