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- EXPLAIN: Inspect Query Plans – DuckDB 12873
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...dditional settings that can be used to control the output. The following settings are available: The default setting. Only shows the physical plan. PRAGMA explain_output = 'physical_only' ; Shows only the optimized plan. PRAGMA explain_output = 'optim...ized_only' ; Shows both the physical and optimized plans. PRAGMA explain_output = 'all' ; See Also For more information, see the ”Profiling”...page . 関連キーワード ││ physical plan query students exams output executed explain optimized statement operator settings Shows Documentation Guides Meta Queries Copy Markdown Inspect Query Plans displays enabled 関連するページ EXPLAIN ANALYZE: Profi... - https://man.mtool.work/duckdb/1.3/guides/meta/explain.html
- Comparisons – DuckDB 11094
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...t Pivot Sitemap Live Demo Documentation / SQL / Expressions Copy Markdown Comparisons Comparison Operators The table below shows the standard comparison operators. Whenever either of the input arguments is NULL , the output of the comparison is NULL ....>= greater than or equal to 4 >= NULL NULL = or == equal NULL = NULL NULL <> or != not equal 2 <> 2 false The table below shows the standard distinction operators. These operators treat NULL values as equal. Operator Description Example Result IS DIS...false . 関連キーワード operators equal expression standard comparison below type table Description These DuckDB equivalent shows Operator Example less greater including Combination Casting casts PostgreSQL stricter checking otherwise 関連するページ Ca... - https://man.mtool.work/duckdb/1.3/sql/expressions/comparison_operators.html
- Types API – DuckDB 10801
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...yType object is expected, it is also possible to provide any of the options listed below. Python Built-Ins The table below shows the mapping of Python Built-in types to DuckDB type. Built-in types DuckDB type bool BOOLEAN bytearray BLOB bytes BLOB flo...at DOUBLE int BIGINT str VARCHAR Numpy DTypes The table below shows the mapping of Numpy DType to DuckDB type. Type DuckDB type bool BOOLEAN float32 FLOAT float64 DOUBLE int16 SMALLINT int32...uckdb typing Union dict types objects list import Parameters DuckDB uint Types also below float child print instance table shows mapping Built-in bytearray 関連するページ Python Client API Conversion between DuckDB and Python Executing SQL in Python V... - https://man.mtool.work/duckdb/1.3/clients/python/types.html
- Timestamp with Time Zone Functions – DuckDB 10507
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...esumed to be America/Los_Angeles using the Gregorian calendar. 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 a...04:13:34-07 -- the offset will differ based on your local time zone ICU Timestamp with Time Zone Operators The table below shows the available mathematical operators for TIMESTAMP WITH TIME ZONE values provided by the ICU extension. Operator Descripti...subtracting from infinite values produces the same infinite value. ICU Timestamp with Time Zone Functions The table below shows the ICU provided scalar functions for TIMESTAMP WITH TIME ZONE values. Name Description age(timestamptz, timestamptz) Subt... - https://man.mtool.work/duckdb/1.3/sql/functions/timestamptz.html
- DESCRIBE Statement – DuckDB 9919
- 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
...on Format Pivot Sitemap Live Demo Documentation / SQL / Statements Copy Markdown DESCRIBE Statement The DESCRIBE statement shows the schema of a table, view or query. Usage DESCRIBE tbl ; In order to summarize a query, prepend DESCRIBE to a query. DES...CRIBE SELECT * FROM tbl ; Alias The SHOW statement is an alias for DESCRIBE . See Also For more examples, see the guide on DESCRIBE . 関連キーワード query statement...Documentation Statements Copy Markdown Statement shows schema table view Usage order summarize prepend Alias alias Also more examples guide 関連するページ SUMMARIZE Statement CR... - https://man.mtool.work/duckdb/1.3/sql/statements/describe.html
- Profiling Queries – DuckDB 9919
- 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
...erator. EXPLAIN ANALYZE To profile a query, run: EXPLAIN ANALYZE query ; The EXPLAIN ANALYZE statement runs the query, and shows the actual cardinalities for each operator, as well as the cumulative wall-clock time spent in each operator. 関連キーワー...eries DuckDB supports profiling queries statements plan without executing output contains estimated profile statement runs shows actual 関連するページ Profiling DESCRIBE Statement SUMMARIZE Statement Overview of DuckDB Internals EXPLAIN: Inspect Query... - https://man.mtool.work/duckdb/1.3/sql/statements/profiling.html
- Time Functions – DuckDB 9038
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...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 INTERVAL TIME '0...VAL 5 HOUR 06:02:03 - subtraction of an INTERVAL TIME '06:02:03' - INTERVAL 5 HOUR 01:02:03 Time Functions The table below shows the available scalar functions for TIME types. Name Description current_time Current time (start of current transaction) i... - https://man.mtool.work/duckdb/1.3/sql/functions/time.html
- Aggregate Functions – DuckDB 8745
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...not return zero, and string_agg does not return an empty string in this case. General Aggregate Functions The table below shows the available general aggregate functions. Function Description any_value(arg) Returns the first non-null value from arg ...., the value will be skipped. Example weighted_avg(A, W) Alias(es) wavg(arg, weight) Approximate Aggregates The table below shows the available approximate aggregate functions. Function Description Example approx_count_distinct(x) Calculates the approx...size is optional and uses 8192 as a default size. reservoir_quantile(A, 0.5, 1024) Statistical Aggregates The table below shows the available statistical aggregate functions. They all ignore NULL values (in the case of a single input column x ), or p... - https://man.mtool.work/duckdb/1.3/sql/functions/aggregates.html
- Bitstring Functions – DuckDB 8745
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...ds AND, OR and XOR. When bit shifting, the original length of the string is preserved. Bitstring Operators The table below shows the available mathematical operators for BIT type. Operator Description Example Result & Bitwise AND '10101'::BITSTRING &...1011'::BITSTRING << 3 1011000 >> Bitwise shift right '1001011'::BITSTRING >> 3 0001001 Bitstring Functions The table below shows the available scalar functions for BIT type. Name Description bit_count(bitstring) Returns the number of set bits in the b... - https://man.mtool.work/duckdb/1.3/sql/functions/bitstring.html
- Interval Functions – DuckDB 8745
- 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
...ction 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 of an INTERVAL INT...992-03-22 01:02:03 - Subtraction from a TIME TIME '06:02:03' - INTERVAL 5 HOUR 01:02:03 Interval Functions The table below shows the available scalar functions for INTERVAL types. Name Description date_part(part, interval) Extract datepart component (... - https://man.mtool.work/duckdb/1.3/sql/functions/interval.html
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