Results of 1 - 10 of about 65 for Update (0.001 sec.)
- UPDATE EXTENSIONS 12267
- The UPDATE EXTENSIONS statement allows synchronizing the locally installed extension state with the repository that published a given extension. This statement is the recommended way to keep up to date with new features or bug fixes being r
...olled out by extension developers. Note that DuckDB extensions cannot be reloaded during runtime, therefore UPDATE EXTENSIONS does not reload the updated extensions. To use the updated extensions, restart the process running DuckDB. Upda...ting All Extensions To update all extensions installed for the DuckDB version of your client: UPDATE EXTENSIONS; This will iterate over the extensions a...nd return their repositories and the update result: ┌────────────────┬──────────────┬─────────────────────┬──────────────────┬─────────────────┐ │ extension_name │ re... - https://man.mtool.work/duckdb/2.0/sql/statements/update_extensions.html
- UPDATE Statement 12166
- 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,
...j = 2; Syntax UPDATE changes the values of the specified columns in all rows that satisfy the condition. Only the columns to be modified need b...itly modified retain their previous values. RETURNING Clause The RETURNING clause returns the values of the rows that were updated. It uses the same syntax as the SELECT clause, except the DISTINCT modifier is not supported. The returned values reflect...the state of the rows after the update. CREATE TABLE tbl (i INTEGER, j INTEGER); INSERT INTO tbl VALUES (0, 1), (1, 2); UPDATE tbl SET j = j + 10 WHERE i = 1 RET... - https://man.mtool.work/duckdb/2.0/sql/statements/update.html
- INSERT Statement 11522
- 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
...3); Assuming tbl has a primary key/unique constraint, do nothing on conflict: INSERT OR IGNORE INTO tbl (i) VALUES (1); Or update the table with the new values instead: INSERT OR REPLACE INTO tbl (i) VALUES (1); Syntax INSERT INTO inserts new rows into...n be avoided by explicitly handling conflicts. DuckDB supports two such clauses: ON CONFLICT DO NOTHING and ON CONFLICT DO UPDATE SET ... . DO NOTHING Clause The DO NOTHING clause causes the error(s) to be ignored, and the values are not inserted or up...ements are equivalent: 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 e... - https://man.mtool.work/duckdb/2.0/sql/statements/insert.html
- CREATE TRIGGER Statement 10621
- New The CREATE TRIGGER feature was introduced in DuckDB 2.0. The CREATE TRIGGER statement registers a trigger: a set of SQL statements that run automatically in response to INSERT , UPDATE , or DELETE events on a table. Examples Record ever
...d INTEGER, val INTEGER); CREATE TABLE audit (id INTEGER, old_val INTEGER, new_val INTEGER); CREATE TRIGGER trg_audit AFTER UPDATE ON target REFERENCING OLD TABLE AS o NEW TABLE AS n FOR EACH STATEMENT INSERT INTO audit SELECT n.id, o.val, n.val FROM o...JOIN n ON o.id = n.id; INSERT INTO target VALUES (1, 10), (2, 20); UPDATE target SET val = val * 10 WHERE id <= 2; SELECT * FROM audit; id old_val new_val 1 10 100 2 20 200 Fire a trigger once per...VALUES (NEW.id); INSERT INTO t VALUES (1), (2); SELECT * FROM log; Restrict a trigger to changes of specific columns with UPDATE OF : CREATE TRIGGER trg_price AFTER UPDATE OF price ON products FOR EACH STATEMENT INSERT INTO price_changes DEFAULT VALUE... - https://man.mtool.work/duckdb/2.0/sql/statements/create_trigger.html
- MERGE INTO Statement 10563
- 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
...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 without further instuctions ( WHEN MATCHED THEN UPDATE ), and when there is no match, the row can be trivi...rah', '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 salary 1 John 105000.0 2 Anna 100000.0 3 Sarah 95000.0 In t...keyword USING can be used in the match condition. MERGE INTO people USING ( SELECT 1 AS id, 98_000.0 AS salary ) AS salary_updates USING (id) WHEN MATCHED THEN UPDATE SET salary = salary_updates.salary; FROM people ORDER BY id; id name salary 1 John 98... - https://man.mtool.work/duckdb/2.0/sql/statements/merge_into.html
- Writing to Iceberg 9662
- The DuckDB iceberg extension supports writing to Iceberg tables when an Iceberg catalog is attached. Writing to a table read directly from storage with iceberg_scan is not supported: the catalog is required to commit the new table metadata.
...supports the following operations when used with a REST Catalog attached: CREATE/DROP SCHEMA CREATE/DROP TABLE INSERT INTO UPDATE DELETE MERGE INTO ALTER TABLE SELECT Since these operations are supported, the following will also work: COPY FROM DATABAS...catalog.sales.events; Table properties can also be inspected and modified after creation, see Table Properties Functions . UPDATE and DELETE The UPDATE and DELETE statements are supported on both partitioned and unpartitioned tables: UPDATE iceberg_cat...RE event_time < TIMESTAMP '2026-01-01'; They use merge-on-read semantics and write positional deletes, see Limitations for UPDATE and DELETE . MERGE INTO The MERGE INTO statement is the recommended way to express upserts against Iceberg tables, which d... - https://man.mtool.work/duckdb/2.0/core_extensions/iceberg/writing_to_iceberg.htm...
- Versioning of Extensions 9332
- Extension Versioning Most software has some sort of version number. Version numbers serve a few important goals: Tie a binary to a specific state of the source code Allow determining the expected feature set Allow determining the state of t
...pends on their stability level. unstable extensions are often in sync with DuckDB's release cycle, but may also be quietly updated between DuckDB releases. pre-release and stable extensions follow their own release cycle. These may or may not coincide...extension as expected: INSTALL AND LOAD aws; Updating Extensions DuckDB has a dedicated statement that will automatically update all extensions to their latest version. The output will give the user information on which extensions were updated to/from...which version. For example: UPDATE EXTENSIONS; extension_name repository update_result previous_version current_version httpfs core NO_UPDATE_AVAILABLE 70fd6... - https://man.mtool.work/duckdb/2.0/extensions/versioning_of_extensions.html
- Indexes 9332
- Index Types DuckDB has two built-in index types. Indexes can also be defined via extensions . Min-Max Index (Zonemap) A min-max index (also known as zonemap or block range index) is automatically created for columns of all general-purpose d
...at is also stored in secondary indexes. As expected, indexes have a strong effect on performance, slowing down loading and updates, but speeding up certain queries. Please consult the Performance Guide for details. Constraint Checking in UPDATE Stateme...nts UPDATE statements on indexed columns and columns that cannot be updated in place are transformed into a DELETE of the original ro...w followed by an INSERT of the updated row. This rewrite has performance implications, particularly for wide tables, as entire rows are rewritten instead of onl... - https://man.mtool.work/duckdb/2.0/sql/indexes.html
- Merge Statement for SCD Type 2 8244
- 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
...when it changed and for how 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...ce table/query ON Join condition (usually primary/business key + current flag) WHEN MATCHED Row exists in both → typically UPDATE (or DELETE) WHEN NOT MATCHED BY TARGET New row (insert) WHEN NOT MATCHED BY SOURCE Row disappeared → soft-delete/expire ol...d version RETURNING merge_action Optional: shows what happened to each row (INSERT/UPDATE/DELETE) Build an SCD Type 2 Dimension Table We'll track ducks and preserve history whenever their name, breed, or location... - https://man.mtool.work/duckdb/2.0/guides/sql_features/merge.html
- Struct Functions 7829
- The functions on this page work on STRUCT values . Functions that access entries by position, such as struct[idx] , struct_extract_at , struct_contains , struct_position and struct_values , also accept TUPLE values , i.e., structs with unna
...pts either only STRUCT s or only TUPLE s. Functions that work with entry names, i.e., struct_insert , struct_keys , struct_update and remap_struct , require a STRUCT . Name Description struct.entry Dot notation that serves as an alias for struct_extrac...me. struct_position(struct, entry) Return the index of the entry within the STRUCT (1-based), or NULL if not found. struct_update(struct, name := any, ...) Add or update field(s) of an existing STRUCT . struct_values(struct) Return the values of a STRU...), or NULL if not found. | | Example | struct_position(row(1, 2, 3), 2) | | Result | 2 | | Alias | struct_indexof | struct_update(struct, name := any, ...) | Description | Add or update field(s) of an existing STRUCT . | | Example | struct_update({'a':... - https://man.mtool.work/duckdb/2.0/sql/functions/struct.html
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