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DuckDB 1.3 ドキュメント 全文検索
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- Execution Format – DuckDB 11228
- This page is for DuckDB 1.3, which is outdated.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
...teral 'duckdb' once for every row. The constant vector allows us to only store the literal once. Constant vectors are also emitted by the storage when decompressing from constant compression. Dictionary Vectors Dictionary vectors are physically stored a...s a child vector, and a selection vector that contains indexes into the child vector. Dictionary vectors are emitted by the storage when decompressing from dictionary Just like constant vectors, dictionary vectors are also emitted by the s...fset and an increment value. Sequence vectors are useful for efficiently storing incremental sequences. They are generally emitted for row identifiers. Unified Vector Format These properties of the different vector formats are great for optimization pur... - https://man.mtool.work/duckdb/1.3/internals/vector.html
- Unnesting – DuckDB 7485
- This page is for DuckDB 1.3, which is outdated.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
...unnest on a list emits one row per list 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 longe... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/unnest.html
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