Results of 1 - 5 of about 5 for upsert (0.001 sec.)
- Appender 12612
- Use an appender to insert rows that your Python code produces. It collects rows and writes them together in one SQL statement; this is called flushing. The with block below flushes on successful exit: import duckdb con = duckdb.connect() co
....appender("events", columns=["kind"]) appender.append_row("login") appender.append_row("logout") appender.flush() Updates, Upserts and Deletes The action argument picks the statement: "insert" (the default), "upsert" , "update" or "delete" . An upsert...EY, qty INTEGER)") con.execute("INSERT INTO stock VALUES ('widget', 3), ('gadget', 5)") with con.appender("stock", action="upsert") as appender: appender.append_row("widget", 10) appender.append_row("gizmo", 1) with con.appender("stock", action="update...appender.append_row("gizmo") print(con.sql("SELECT * FROM stock ORDER BY sku").fetchall()) [('gadget', 0), ('widget', 10)] upsert runs an INSERT OR REPLACE , so the table needs exactly one primary key or unique constraint. It takes columns like an inse... - https://man.mtool.work/duckdb/2.0/clients/python/appender.html
- Merge Statement for SCD Type 2 9560
- This is a practical, step-by-step guide to using DuckDB's MERGE statement (introduced in v1.4.0) to perform upserts and build Slowly Changing Dimension Type 2 (SCD Type 2) tables . Type 2 SCDs let you keep full historical versions of record
...ow long it was in a particular state. Why Use MERGE in DuckDB? Single SQL statement for INSERT , UPDATE , and soft DELETE (upsert and expire). Much cleaner and faster than equivalent Python/Pandas logic. Full history tracking without hard deletes. Work...-25 false 10 101 Quackers Mallard Pond B 2025-11-26 NULL true Common Patterns and Variations Use Case Clause to Use Simple upsert (no history) WHEN MATCHED THEN UPDATE and WHEN NOT MATCHED BY TARGET THEN INSERT Upsert and delete missing rows Add WHEN N... - https://man.mtool.work/duckdb/2.0/guides/sql_features/merge.html
- UPDATE Statement 8126
- The UPDATE statement modifies the values of rows in a table. Examples For every row where i is NULL , set the value to 0 instead: UPDATE tbl SET i = 0 WHERE i IS NULL; Set all values of i to 1 and all values of j to 2: UPDATE tbl SET i = 1,
...y.code AND country.name = 'France'; SELECT * FROM city; name revenue country_code Paris 800 FR Lyon 300 FR Brussels 400 BE Upsert (Insert or Update) See the Insert documentation for details.... - https://man.mtool.work/duckdb/2.0/sql/statements/update.html
- MERGE INTO Statement 7960
- The MERGE INTO statement is an alternative to INSERT INTO ... ON CONFLICT that doesn't need a primary key since it allows for a custom match condition. This is a very useful alternative for upserting use cases ( INSERT + UPDATE ) when the d
...NTEGER, name VARCHAR, salary FLOAT); INSERT INTO people VALUES (1, 'John', 92_000.0), (2, 'Anna', 100_000.0); The simplest upsert would be to use a whole row in the USING clause. This way, if there is a match, the row can be updated to the new row with...eople USING ( SELECT unnest([3, 1]) AS id, unnest(['Sarah', 'John']) AS name, unnest([95_000.0, 105_000.0]) AS salary ) AS upserts ON (upserts.id = people.id) WHEN MATCHED THEN UPDATE WHEN NOT MATCHED THEN INSERT; FROM people ORDER BY id; id name salar...(1, 'John', 105_000.0); MERGE INTO people USING ( SELECT unnest([3, 1]) AS id, unnest([89_000.0, 70_000.0]) AS salary ) AS upserts USING (id) WHEN MATCHED AND people.salary < 100_000.0 THEN UPDATE SET salary = upserts.salary -- Second update or delete... - https://man.mtool.work/duckdb/2.0/sql/statements/merge_into.html
- INSERT Statement 7648
- The INSERT statement inserts new data into a table. Examples Insert the values 1, 2, 3 into tbl : INSERT INTO tbl VALUES (1), (2), (3); Insert the result of a query into a table: INSERT INTO tbl SELECT * FROM other_tbl; Insert values into t
...valent: INSERT OR IGNORE INTO tbl VALUES (1, 84); INSERT INTO tbl VALUES (1, 84) ON CONFLICT DO NOTHING; DO UPDATE Clause (Upsert) The DO UPDATE clause causes the INSERT to turn into an UPDATE on the conflicting row(s) instead. The SET expressions that... - https://man.mtool.work/duckdb/2.0/sql/statements/insert.html
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