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- Loading JSON 11228
- The DuckDB JSON reader can automatically infer which configuration flags to use by analyzing the JSON file. This will work correctly in most situations, and should be the first option attempted. In rare situations where the JSON reader cann
...ces types of columns. In the following example, we use the todos.json file, SELECT * FROM read_json('todos.json') LIMIT 5; userId id title completed 1 1 delectus aut autem false 1 2 quis ut nam facilis et officia qui false 1 3 fugiat veniam minus false...REATE TABLE todos AS SELECT * FROM read_json('todos.json'); DESCRIBE todos; column_name column_type null key default extra userId BIGINT YES NULL NULL NULL id BIGINT YES NULL NULL NULL title VARCHAR YES NULL NULL NULL completed BOOLEAN YES NULL NULL NU...r a subset of columns, read_json excludes columns that we don't specify: SELECT * FROM read_json( 'todos.json', columns = {userId: 'UBIGINT', completed: 'BOOLEAN'} ) LIMIT 5; Note that only the userId and completed columns are shown: userId completed 1... - https://man.mtool.work/duckdb/2.0/data/json/loading_json.html
- JSON Overview 7485
- DuckDB supports SQL functions that are useful for reading values from existing JSON and creating new JSON data. JSON is supported with the json extension which is shipped with most DuckDB distributions and is auto-loaded on first use. If yo
....json'; Use the read_json function with custom options: SELECT * FROM read_json('todos.json', format = 'array', columns = {userId: 'UBIGINT', id: 'UBIGINT', title: 'VARCHAR', completed: 'BOOLEAN'}); Read a JSON file from stdin, auto-infer options: cat...ata/json/todos.json | duckdb -c "SELECT * FROM read_json('/dev/stdin')" Read a JSON file into a table: CREATE TABLE todos (userId UBIGINT, id UBIGINT, title VARCHAR, completed BOOLEAN); COPY todos FROM 'todos.json' (AUTO_DETECT true); Alternatively, cr... - https://man.mtool.work/duckdb/2.0/data/json/overview.html
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