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- Relational API – DuckDB 14112
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...ncrementally construct queries. The API is centered around DuckDBPyRelation nodes. The relations can be seen as symbolic representations of SQL queries. Lazy Evaluation The relations do not hold any data – and nothing is executed – until a method that t...of that row for an argument column avg Computes the average on a given column bit_and Computes the bitwise AND of all bits present in a given column bit_or Computes the bitwise OR of all bits present in a given column bit_xor Computes the bitwise XOR of...all bits present in a given column bitstring_agg Computes a bitstring with bits set for each distinct value in a given column bool_and Comp... - https://man.mtool.work/duckdb/1.3/clients/python/relational_api.html
- Subqueries – DuckDB 12713
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...ever, it can be used as an uncorrelated subquery as well. For example, we can use it to figure out if there are any grades present for a given course: SELECT EXISTS ( FROM grades WHERE course = 'Math' ) AS math_grades_present ; math_grades_present true...SELECT EXISTS ( FROM grades WHERE course = 'History' ) AS history_grades_present ; history_grades_present false The subqueries in the examples above make use of the fact that you can omit the SELECT * in...by the subquery or the set of expressions on the right hand side (RHS). The IN operator returns true if the expression is present in the RHS, false if the expression is not in the RHS and the RHS has no NULL values, or NULL if the expression is not in... - https://man.mtool.work/duckdb/1.3/sql/expressions/subqueries.html
- Python Client API – DuckDB 11594
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...w_spec : str = '' , projected_columns : str = '' ) → duckdb.duckdb.DuckDBPyRelation ¶ Computes the bitwise AND of all bits present in a given column Detailed examples can be found at Relational API page . bit_or ( self : duckdb.duckdb.DuckDBPyRelation ,...ow_spec : str = '' , projected_columns : str = '' ) → duckdb.duckdb.DuckDBPyRelation ¶ Computes the bitwise OR of all bits present in a given column Detailed examples can be found at Relational API page . bit_xor ( self : duckdb.duckdb.DuckDBPyRelation...w_spec : str = '' , projected_columns : str = '' ) → duckdb.duckdb.DuckDBPyRelation ¶ Computes the bitwise XOR of all bits present in a given column Detailed examples can be found at Relational API page . bitstring_agg ( self : duckdb.duckdb.DuckDBPyRel... - https://man.mtool.work/duckdb/1.3/clients/python/reference/
- Query – DuckDB 9076
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...umn index. Return Value The logical column type of the specified column. duckdb_column_count Returns the number of columns present in a the result object. Syntax idx_t duckdb_column_count ( duckdb_result * result ); Parameters result : The result object.... Return Value The number of columns present in the result object. duckdb_row_count Warning Deprecation notice. This method is scheduled for removal in a future releas...e. Returns the number of rows present in the result object. Syntax idx_t duckdb_row_count ( duckdb_result * result ); Parameters result : The result object. Ret... - https://man.mtool.work/duckdb/1.3/clients/c/query.html
- IN Operator – DuckDB 8952
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...single column. IN (val1, val2, ...) (Tuple) The IN operator on a tuple (val1, val2, ...) returns true if the expression is present in the RHS, false if the expression is not in the RHS and the RHS has no NULL values, or NULL if the expression is not in...ing function . For example: SELECT 'Hello' IN 'Hello World' ; true NOT IN NOT IN can be used to check if an element is not present in the set. x NOT IN y is equivalent to NOT (x IN y) . 関連キーワード Math operator expression values used column English...works checks right hand side lists maps subqueries return single tuple present according semantics presence Subquery example unnest 関連するページ Subqueries Profiling Queries Pattern Matching TRY expr... - https://man.mtool.work/duckdb/1.3/sql/expressions/in.html
- SELECT Clause – DuckDB 8532
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...ause returns only one row per unique value in the set of expressions as defined in the ON clause. If an ORDER BY clause is present, the row that is returned is the first row that is encountered as per the ORDER BY criteria. If an ORDER BY clause is not...y ; Aggregate functions are special functions that combine multiple rows into a single value. When aggregate functions are present in the SELECT clause, the query is turned into an aggregate query. In an aggregate query, all expressions must either be p... - https://man.mtool.work/duckdb/1.3/sql/query_syntax/select.html
- Autocomplete – DuckDB 8253
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...through the autocomplete extension . autocomplete is triggered by pressing Tab . Multiple autocomplete suggestions can be present. You can cycle forwards through the suggestions by repeatedly pressing Tab , or Shift+Tab to cycle backwards. autocompleti...ions grades Documentation Client APIs Copy Markdown Autocomplete offers context aware queries extension triggered Multiple present forwards 関連するページ AutoComplete Extension Embedding DuckDB Subqueries Building Extensions Nested Functions Collations... - https://man.mtool.work/duckdb/1.3/clients/cli/autocomplete.html
- DELETE Statement – DuckDB 8253
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...DELETE Statement The DELETE statement removes rows from the table identified by the table-name. If the WHERE clause is not present, all records in the table are deleted. If a WHERE clause is supplied, then only those rows for which the WHERE clause resu...ees space Statement statement removes Clause allows Kat approx birthyear Documentation Statements Copy Markdown identified present records supplied those results Rows 関連するページ SELECT Statement WHERE Clause CHECKPOINT Statement VALUES Clause LIMIT... - https://man.mtool.work/duckdb/1.3/sql/statements/delete.html
- Information Schema – DuckDB 8113
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...: Columns The view that describes the catalog information for columns is information_schema.columns . It lists the column present in the database and has the following layout: Column Description Type Example table_catalog Name of the database containin...base, Catalog and Schema The top level catalog view is information_schema.schemata . It lists the catalogs and the schemas present in the database and has the following layout: Column Description Type Example catalog_name Name of the database that the s...ws The view that describes the catalog information for tables and views is information_schema.tables . It lists the tables present in the database and has the following layout: Column Description Type Example table_catalog The catalog the table or view... - https://man.mtool.work/duckdb/1.3/sql/meta/information_schema.html
- Complete API – DuckDB 7973
- 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
...umn index. Return Value The logical column type of the specified column. duckdb_column_count Returns the number of columns present in a the result object. Syntax idx_t duckdb_column_count ( duckdb_result * result ); Parameters result : The result object.... Return Value The number of columns present in the result object. duckdb_row_count Warning Deprecation notice. This method is scheduled for removal in a future releas...e. Returns the number of rows present in the result object. Syntax idx_t duckdb_row_count ( duckdb_result * result ); Parameters result : The result object. Ret... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
DuckDB 1.3 Documentation / man.mtool.work