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DuckDB 1.3 ドキュメント 全文検索
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- FROM and JOIN Clauses – 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- This page is for DuckDB 1.3, which is outdated.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
...using an ON clause with the join (clearer) or implied by the WHERE clause (old-fashioned). We use the l_regions and the l_nations tables from the TPC-H schema: CREATE TABLE l_regions ( r_regionkey INTEGER NOT NULL PRIMARY KEY , r_name CHAR ( 25 ) NOT N...ULL , r_comment VARCHAR ( 152 ) ); CREATE TABLE l_nations ( n_nationkey INTEGER NOT NULL PRIMARY KEY , n_name CHAR ( 25 ) NOT NULL , n_regionkey INTEGER NOT NULL , n_comment VARCHA...R ( 152 ), FOREIGN KEY ( n_regionkey ) REFERENCES l_regions ( r_regionkey ) ); Return the regions for the nations: SELECT n . * , r . * FROM l_nations n JOIN l_regions r ON ( n_regionkey = r_regionkey ); If the column names are the same... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/from.html
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