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DuckDB 1.3 ドキュメント 全文検索
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- Unnesting – DuckDB 9414
- This page is for DuckDB 1.3, which is outdated.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
...st entry. Regular scalar expressions in the same SELECT clause are repeated for every emitted row. When multiple lists are unnested in the same SELECT clause, the lists are unnested side-by-side. If one list is longer than the other, the shorter list is...eful to fully flatten columns that contain lists within lists, or lists of structs. Note that lists within structs are not unnested. Setting the Maximum Depth of Unnesting The max_depth parameter allows limiting the maximum depth of recursive unnesting (...list lists depth Unnesting generating recursive rows structs Unnest struct columns unnesting clause parameter Empty entry unnested fully within Recursive using used scalar multiple 関連するページ List Type SELECT Clause Pivot Internals Struct Data Type... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/unnest.html
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