Results of 1 - 10 of about 38 for exist (0.004 sec.)
- CREATE TABLE Statement – DuckDB 12799
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...mp.main.t1 , for disambiguation. CREATE OR REPLACE The CREATE OR REPLACE syntax allows a new table to be created or for an existing table to be overwritten by the new table. This is shorthand for dropping the existing table and then creating the new o...ne. Create a table with two integer columns (i and j) even if t1 already exists: CREATE OR REPLACE TABLE t1 ( i INTEGER , j INTEGER ); IF NOT EXISTS The IF NOT EXISTS syntax will only proceed with the...creation of the table if it does not already exist. If the table already exists, no action will be taken and the existing table will remain in the database. Create a table w... - https://man.mtool.work/duckdb/1.3/sql/statements/create_table.html
- List Functions – DuckDB 11541
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...n in the original list instead of the actual values. list_has_all(list, sub-list) Returns true if all elements of sub-list exist in list. list_has_any(list1, list2) Returns true if any elements exist is both lists. list_intersect(list1, list2) Returns...a list of all the elements that exist in both l1 and l2 , without duplicates. list_position(list, element) Returns the index of the element if the list contains...Result [2, 4, 1, 3] Alias array_grade_up list_has_all(list, sub-list) Description Returns true if all elements of sub-list exist in list. Example list_has_all([4, 5, 6], [4, 6]) Result true Alias array_has_all list_has_any(list1, list2) Description Re... - https://man.mtool.work/duckdb/1.3/sql/functions/list.html
- CREATE INDEX Statement – DuckDB 11321
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...plicate values on column revenue of table films : CREATE INDEX s_idx ON films ( revenue ); Create index if it does not yet exist: CREATE INDEX IF NOT EXISTS s_idx ON films ( revenue ); The CREATE INDEX IF NOT EXISTS statement does not have an “early e...xit” at the moment, instead, it will attempt to create the index and only check its existence before committing it to storage. Therefore, it may run for a longer time compared to other IF NOT EXISTS statements, w...Description UNIQUE Causes the system to check for duplicate values in the table when the index is created (if data already exist) and each time data is added. Attempts to insert or update data that would result in duplicate entries will generate an er... - https://man.mtool.work/duckdb/1.3/sql/statements/create_index.html
- PostgreSQL Compatibility – DuckDB 11116
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...quotes preserve the case. CREATE TABLE MyTaBLe ( x INTEGER ); SELECT * FROM "MyTaBLe" ; ERROR: relation "MyTaBLe" does not exist PostgreSQL does not only treat quoted identifiers as case-sensitive, PostgreSQL treats all identifiers as case-sensitive,...t work: CREATE TABLE "PreservedCase" ( x INTEGER ); SELECT * FROM PreservedCase ; ERROR: relation "preservedcase" does not exist Therefore, case-insensitivity in PostgreSQL only works if you never use quoted identifiers with different cases. For DuckD...LECT 1 == 1 AS t ; DuckDB returns true , while PostgreSQL returns: postgres=# SELECT 1 == 1 AS t; ERROR: operator does not exist: integer == integer LINE 1: SELECT 1 == 1 AS t; Note that the use of == is not encouraged due to its limited portability.... - https://man.mtool.work/duckdb/1.3/sql/dialect/postgresql_compatibility.html
- Replacement Scans – DuckDB 9858
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...cement Scans The replacement scan API can be used to register a callback that is called when a table is read that does not exist in the catalog. For example, when a query such as SELECT * FROM my_table is executed and my_table does not exist, the repl...e 関連キーワード replacement scan duckdb info callback parameter table delete called database extra Syntax Parameters read exist specified performed Documentation Client APIs Copy Markdown Replacement Scans used 関連するページ Table Functions CALL Sta... - https://man.mtool.work/duckdb/1.3/clients/c/replacement_scans.html
- DROP Statement – DuckDB 9858
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...the table with the name tbl : DROP TABLE tbl ; Drop the view with the name v1 ; do not throw an error if the view does not exist: DROP VIEW IF EXISTS v1 ; Drop function fn : DROP FUNCTION fn ; Drop index idx : DROP INDEX idx ; Drop schema sch : DROP S...EATE VIEW v AS SELECT i FROM tbl ; DROP TABLE tbl RESTRICT ; SELECT * FROM v ; Catalog Error: Table with name tbl does not exist! Limitations on Reclaiming Disk Space Running DROP TABLE should free the memory used by the table, but not always disk spa..., refer to the “Reclaiming space” page . 関連キーワード myschema table Drop free view drop space entry type dropped blocks exist schema sch macro Dependencies clause provided there objects depend modifier following dependencies tracked 関連するページ... - https://man.mtool.work/duckdb/1.3/sql/statements/drop.html
- Typecasting – DuckDB 9009
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...y fields in common, then the cast was likely not intended. SELECT CAST ({ 'a' : 42 } AS STRUCT ( a VARCHAR )); Fields that exist in the target struct, but that do not exist in the source struct, default to NULL . SELECT CAST ({ 'a' : 42 } AS STRUCT (...a VARCHAR , b VARCHAR )); Fields that only exist in the source struct are ignored. SELECT CAST ({ 'a' : 42 , 'b' : 43 } AS STRUCT ( a VARCHAR )); The names of the struct c... - https://man.mtool.work/duckdb/1.3/sql/data_types/typecasting.html
- CREATE SCHEMA Statement – DuckDB 8805
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...a in the catalog. The default schema is main . Examples Create a schema: CREATE SCHEMA s1 ; Create a schema if it does not exist yet: CREATE SCHEMA IF NOT EXISTS s2 ; Create a schema or replace a schema if it exists: CREATE OR REPLACE SCHEMA s2 ; Crea...ード schema Create schemas Documentation Statements Copy Markdown Statement statement creates catalog default main Examples exist replace exists table Compute join between tables Syntax 関連するページ USE Statement CREATE VIEW Statement List Tables CRE... - https://man.mtool.work/duckdb/1.3/sql/statements/create_schema.html
- USE Statement – DuckDB 8805
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...ult. Examples --- Sets the 'memory' database as the default. Will use 'main' schema implicitly or error --- if it does not exist. USE memory ; --- Sets the 'duck.main' database and schema as the default USE duck.main ; -- Sets the `main` schema of the...n Sets duck statement memory created Documentation Statements Copy Markdown Statement selects optional Examples implicitly exist currently selected case Syntax sets combination 関連するページ CREATE SCHEMA Statement ATTACH and DETACH Statements Inform... - https://man.mtool.work/duckdb/1.3/sql/statements/use.html
- SQL on Apache Arrow – DuckDB 8176
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...iles and save in a folder base_path = pathlib . Path ( tempfile . gettempdir ()) ( base_path / "parquet_folder" ). mkdir ( exist_ok = True ) pq . write_to_dataset ( my_arrow_table , str ( base_path / "parquet_folder" )) # link to Parquet files using a...iles and save in a folder base_path = pathlib . Path ( tempfile . gettempdir ()) ( base_path / "parquet_folder" ). mkdir ( exist_ok = True ) pq . write_to_dataset ( my_arrow_table , str ( base_path / "parquet_folder" )) # link to Parquet files using a... - https://man.mtool.work/duckdb/1.3/guides/python/sql_on_arrow.html
DuckDB 1.3 Documentation / man.mtool.work