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DuckDB 1.3 ドキュメント 全文検索
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- Set Operations – 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- This page is for DuckDB 1.3, which is outdated.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
...ws an error. Vanilla UNION (Set Semantics) The vanilla UNION clause follows set semantics, therefore it performs duplicate elimination, i.e., only unique rows will be included in the result. SELECT * FROM range ( 2 ) t1 ( x ) UNION SELECT * FROM range ( 3 )...1 0 UNION ALL (Bag Semantics) UNION ALL returns all rows of both queries following bag semantics, i.e., without duplicate elimination. SELECT * FROM range ( 2 ) t1 ( x ) UNION ALL SELECT * FROM range ( 3 ) t2 ( x ); x 0 1 0 1 2 UNION [ALL] BY NAME The UNIO...Berlin Germany NULL NULL Amsterdam NULL 10 2022-10-14 UNION BY NAME follows set semantics (therefore it performs duplicate elimination), whereas UNION ALL BY NAME follows bag semantics. INTERSECT The INTERSECT clause can be used to select all rows that occu... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/setops.html
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