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Boolean Type 12777
Name Aliases Description BOOLEAN BOOL Logical Boolean ( true / false ) The BOOLEAN type represents a statement of truth (“true” or “false”). In SQL, the BOOLEAN field can also have a third state “unknown” which is represented by the SQL NUL ... explicitly created using the literals true and false . However, they are most often created as a result of comparisons or conjunctions. For example, the comparison i > 10 results in a Boolean value. Boolean values can be used in the WHERE and HAVING clause ... ECT * FROM integers WHERE i > 10; In this case 5 and NULL are filtered out ( 5 > 10 is false and NULL > 10 is NULL ): i 15 Conjunctions The AND / OR conjunctions can be used to combine Boolean values. Below is the truth table for the AND conjunction (i.e., ... AND false X AND NULL true true false NULL false false false false NULL NULL false NULL Below is the truth table for the OR conjunction (i.e., x OR y ). X X OR true X OR false X OR NULL true true true true false true false NULL NULL true NULL NULL Expression ...
https://man.mtool.work/duckdb/2.0/sql/data_types/boolean.html
COPY Statement 8843
Examples Read a CSV file into the lineitem table, using auto-detected CSV options: COPY lineitem FROM 'lineitem.csv'; Read a CSV file into the lineitem table, using manually specified CSV options: COPY lineitem FROM 'lineitem.csv' (DELIMITE ... represent a NULL value. VARCHAR (empty) PREFIX Prefixes the CSV file with a specified string. This option must be used in conjunction with SUFFIX and requires HEADER to be set to false . VARCHAR (empty) SUFFIX Appends a specified string as a suffix to the ... CSV file. This option must be used in conjunction with PREFIX and requires HEADER to be set to false . VARCHAR (empty) QUOTE The quoting character to be used when a data va ...
https://man.mtool.work/duckdb/2.0/sql/statements/copy.html
AWS Extension 8346
The aws extension adds functionality, e.g., authentication, on top of the httpfs extension's S3 capabilities , using the AWS SDK. Installing and Loading The aws extension will be transparently autoloaded on first use from the official exten ... y. If you would like to install and load it manually, run: INSTALL AND LOAD aws; In most cases, the aws extension works in conjunction with the httpfs extension . Configuration and Authentication Tip For an overview of the available methods and guidance on ...
https://man.mtool.work/duckdb/2.0/core_extensions/aws.html
Unnesting 8346
Unnesting is an operation that decomposes values of a composite types into its components. Values of the LIST and STRUCT type may be unnested using the unnest() function . Unnesting turns a LIST -typed value into a table column: each list-e ... ta structures, as it maintains the structure and naming convention of the original data. The parameter can also be used in conjunction with the max_depth parameter, allowing more control and enabling more precise management of nested structures. ...
https://man.mtool.work/duckdb/2.0/sql/query_syntax/unnest.html
Spatial Functions 7611
Function Index Scalar Functions Function Summary DuckDB_PROJ_Compiled_Version Returns a text description of the PROJ library version that this instance of DuckDB was compiled against. DuckDB_Proj_Version Returns a text description of the PR ... y the geometry fragment. To construct a complete GeoJSON document or feature, look into using the DuckDB JSON extension in conjunction with this function. This function supports geometries with Z values, but not M values. M values are ignored. Example selec ...
https://man.mtool.work/duckdb/2.0/core_extensions/spatial/functions.html
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