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- Timestamp Functions – DuckDB 14984
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...Truncate to specified precision . dayname(timestamp) The (English) name of the weekday. epoch_ms(ms) Converts milliseconds since the epoch to a timestamp. epoch_ms(timestamp) Returns the total number of milliseconds since the epoch. epoch_ns(timestamp...) Returns the total number of nanoseconds since the epoch. epoch_us(timestamp) Returns the total number of microseconds since the epoch. epoch(timestamp) Returns the tota...l number of seconds since the epoch. extract(field FROM timestamp) Get subfield from a timestamp. greatest(timestamp, timestamp) The later of two ti... - https://man.mtool.work/duckdb/1.3/sql/functions/timestamp.html
- Timestamp with Time Zone Functions – DuckDB 12610
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.... Built-In Timestamp with Time Zone Functions The table below shows the available scalar functions for TIMESTAMPTZ values. Since these functions do not involve binning or display, they are always available. Name Description current_timestamp Current d...timetz_byte_comparable(timetz) Converts a TIME WITH TIME ZONE to a UBIGINT sort key. to_timestamp(double) Converts seconds since the epoch to a timestamp with time zone. transaction_timestamp() Current date and time (start of current transaction). cur..._byte_comparable('18:18:16.21-07:00'::TIMETZ) Result 2494691656335442799 to_timestamp(double) Description Converts seconds since the epoch to a timestamp with time zone. Example to_timestamp(1284352323.5) Result 2010-09-13 04:32:03.5+00 transaction_ti... - https://man.mtool.work/duckdb/1.3/sql/functions/timestamptz.html
- Enum Data Type – DuckDB 9497
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...); Create an anonymous enum value on the fly: SELECT 'happy' :: ENUM ( 'sad' , 'ok' , 'happy' ); This statement will fail since enums cannot hold NULL values: CREATE TYPE breed AS ENUM ( 'maltese' , NULL ); This statement will fail since enum values...( 'Pedro' , 'happy' ), ( 'Mark' , NULL ), ( 'Pagliacci' , 'sad' ), ( 'Mr. Mackey' , 'ok' ); The following query will fail since the mood type does not have quackity-quack value. INSERT INTO person VALUES ( 'Hannes' , 'quackity-quack' ); The string sa...'happy' , 'anxious' ); CREATE TABLE person_2 ( name text , current_mood mood , future_mood new_mood , past_mood VARCHAR ); Since the current_mood and future_mood columns are constructed on different enum types, DuckDB will cast both enums to strings a... - https://man.mtool.work/duckdb/1.3/sql/data_types/enum.html
- Attach to a DuckDB Database over HTTPS or S3 – DuckDB 9339
- 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
...a HTTPS, use the ATTACH statement as follows: ATTACH 'https://blobs.duckdb.org/databases/stations.duckdb' AS stations_db ; Since DuckDB version 1.1, the ATTACH statement creates a read-only connection to HTTP endpoints. In prior versions, it is necess...equired). Then, use the ATTACH statement as follows: ATTACH 's3://duckdb-blobs/databases/stations.duckdb' AS stations_db ; Since DuckDB version 1.1, the ATTACH statement creates a read-only connection to HTTP endpoints. In prior versions, it is necess...tabase read statement duckdb Database over connection using Cloud Storage httpfs Attaching connect follows blobs databases Since creates endpoints prior versions necessary flag 関連するページ ATTACH and DETACH Statements Sharing Macros Google Cloud St... - https://man.mtool.work/duckdb/1.3/guides/network_cloud_storage/duckdb_over_https...
- Union Type – DuckDB 8758
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...rtype” relationship with their members. Thus UNION types can't be implicitly cast to any of their member types in general, since the information in the other members not matching the target type would be “lost”. If you want to coerce a UNION into one...ion to this is when casting a UNION to VARCHAR , in which case the members will all use their corresponding VARCHAR casts. Since everything can be cast to VARCHAR , this is “safe” in a sense. Casting to Unions A type can always be implicitly cast to a...B) UNION(a A, b B) UNION(a A, b C) if B can't be implicitly cast to C UNION(A, B, D) UNION(A, B, C) Comparison and Sorting Since UNION types are implemented on top of STRUCT types internally, they can be used with all the comparison operators as well... - https://man.mtool.work/duckdb/1.3/sql/data_types/union.html
- Community Extensions – DuckDB 8600
- 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
...y Markdown Community Extensions Community-contributed extensions can be installed from the Community Extensions repository since summer 2024 . Please visit the “Community Extensions” section of the documentation for more details. 関連キーワード Extens...ions Community Documentation Copy Markdown contributed extensions installed repository since summer Please visit section documentation more details 関連するページ Extensions Securing Extensions Troubleshooting of Ex... - https://man.mtool.work/duckdb/1.3/extensions/community_extensions.html
- Date Part Functions – DuckDB 8600
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...eek Day of the week (Sunday = 0, Saturday = 6) weekday , dow 2 dayofyear Day of the year (1-365/366) doy 215 epoch Seconds since 1970-01-01 1627991984 era Gregorian era (CE/AD, BCE/BC) 1 isodow ISO day of the week (Monday = 1, Sunday = 7) 2 isoyear IS...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) Numeric ISO weekday (Monday = 1, Sunday = 7). isoyear(d...decade(date) Description Decade (year / 10). Example decade(DATE '1992-02-15') Result 199 epoch(date) Description Seconds since 1970-01-01. Example epoch(DATE '1992-02-15') Result 698112000 era(date) Description Calendar era. Example era(DATE '0044-0... - https://man.mtool.work/duckdb/1.3/sql/functions/datepart.html
- Spatial Extension – DuckDB 8302
- 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
...can contain any of the other subtypes, as well as other GEOMETRYCOLLECTION s recursively. This may seem strange at first, since DuckDB already have types like LIST , STRUCT and UNION which could be used in a similar way, but the design and behavior o...POINT_2D , LINESTRING_2D , POLYGON_2D and BOX_2D that are based on DuckDBs native nested types, such as STRUCT and LIST . Since these have a fixed and predictable internal memory layout, it is theoretically possible to optimize a lot of geospatial al... - https://man.mtool.work/duckdb/1.3/core_extensions/spatial/overview.html
- SQL Introduction – DuckDB 8003
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...i prcp date lon lat San Francisco 46 50 0.25 1994-11-27 53.000 -194.000 San Francisco 43 57 0.0 1994-11-29 53.000 -194.000 Since the columns all had different names, the parser automatically found which table they belong to. If there were duplicate co...) that reading occurred in, we might try: SELECT city FROM weather WHERE temp_lo = max ( temp_lo ); But this will not work since the aggregate max cannot be used in the WHERE clause: Binder Error: WHERE clause cannot contain aggregates! This restricti...ING clause always contains aggregate functions. In the previous example, we can apply the city name restriction in WHERE , since it needs no aggregate. This is more efficient than adding the restriction to HAVING , because we avoid doing the grouping... - https://man.mtool.work/duckdb/1.3/sql/introduction.html
- PostgreSQL Compatibility – DuckDB 7861
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...is behavior was problematic when interfacing with other tools (e.g., Parquet, Pandas) that are case-sensitive by default – since all identifiers would be lowercased all the time. Therefore, DuckDB achieves case insensitivity by making identifiers full...nt is only used to rebuild statistics. For instruction on reclaiming space, refer to the “Reclaiming space” page . Strings Since version 1.3.0, DuckDB escapes characters such as ' in strings serialized in nested data structures. PostgreSQL does not do... - https://man.mtool.work/duckdb/1.3/sql/dialect/postgresql_compatibility.html
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