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- Struct Functions – DuckDB 12960
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...uct, name := any, ...) Add field(s)/value(s) to an existing STRUCT with the argument values. The entry name(s) will be the bound variable name(s). struct_pack(name := any, ...) Create a STRUCT containing the argument values. The entry name will be the...bound variable name. struct.entry Description Dot notation that serves as an alias for struct_extract from named STRUCT s. Examp...any, ...) Description Add field(s)/value(s) to an existing STRUCT with the argument values. The entry name(s) will be the bound variable name(s). Example struct_insert({'a': 1}, b := 2) Result {'a': 1, 'b': 2} struct_pack(name := any, ...) Descriptio... - https://man.mtool.work/duckdb/1.3/sql/functions/struct.html
- Union Functions – DuckDB 11036
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...cted. union_value(tag := any) Create a single member UNION containing the argument value. The tag of the value will be the bound variable name. union_tag(union) Retrieve the currently selected tag of the union as an Enum . union.tag Description Dot no...value(tag := any) Description Create a single member UNION containing the argument value. The tag of the value will be the bound variable name. Example union_value(k := 'hello') Result 'hello'::UNION(k VARCHAR) union_tag(union) Description Retrieve th...rrently selected Example hello Functions notation serves alias Extract named tags Create single member containing argument bound variable Retrieve Enum Documentation Copy 関連するページ Struct Functions Union Type Avro Extension Regular Expressions Da... - https://man.mtool.work/duckdb/1.3/sql/functions/union.html
- Comparisons – DuckDB 9311
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...erwise expression NOTNULL alias for IS NOT NULL (non-standard) For the expression BETWEEN x AND y , x is used as the lower bound and y is used as the upper bound. Therefore, if x > y , the result will always be false . 関連キーワード operators equal e... - https://man.mtool.work/duckdb/1.3/sql/expressions/comparison_operators.html
- Overview of DuckDB Internals – DuckDB 9095
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...QL statements in case the original query string contains multiple queries. Binder The binder converts all nodes into their bound equivalents. In the binder phase: The tables and columns are resolved using the catalog Types are resolved Aggregate/windo...w functions are extracted The following conversions happen: SQLStatement → BoundStatement QueryNode → BoundQueryNode TableRef → BoundTableRef ParsedExpression → Expression Logical Planner The logical pla...nner creates LogicalOperator nodes from the bound statements. In this phase, the actual logical query tree is created. Optimizer After the logical planner has created the l... - https://man.mtool.work/duckdb/1.3/internals/overview.html
- ODBC 101: A Duck Themed Guide to ODBC – DuckDB 8232
- 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
...scribes the attributes of a data structure or parameter, and allows the application to specify the structure of data to be bound/retrieved. Use case Describing table structures, result sets, binding columns to application buffers Additional informatio...tore data retrieved from the database, or to send data to the database. Buffers are allocated by the application, and then bound to a column in a result set, or a parameter in a query, using the SQLBindCol and SQLBindParameter functions. When the appl... - https://man.mtool.work/duckdb/1.3/guides/odbc/general.html
- Complete API – DuckDB 7585
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...nk_index : The chunk index to fetch from. Return Value The resulting data chunk. Returns NULL if the chunk index is out of bounds. duckdb_result_is_streaming Warning Deprecation notice. This method is scheduled for removal in a future release. Checks...d_statement prepared_statement , idx_t param_idx ); duckdb_execute_prepared Executes the prepared statement with the given bound parameters, and returns a materialized query result. This method can be called multiple times for each prepared statement,...precation notice. This method is scheduled for removal in a future release. Executes the prepared statement with the given bound parameters, and returns an optionally-streaming query result. To determine if the resulting query was in fact streamed, us... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
- Prepared Statements – DuckDB 7585
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...is prepared with question marks ( ? ) or dollar symbols ( $1 ) indicating the parameters of the query. Values can then be bound to these parameters, after which the prepared statement can be executed using those parameters. A single query can be prep... - https://man.mtool.work/duckdb/1.3/clients/c/prepared.html
- Timestamp Issues – DuckDB 7585
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...licate calls to the slow ICU function. Also notice that we are leveraging the DATE cast rules from the previous section to bound the calendar to the model domain. Half Open Intervals Another subtle problem in using SQL for temporal analytics is the BE...o begin <= x AND x <= end -- not begin <= x AND x < end To avoid this problem, make sure you are explicit about comparison boundaries instead of using BETWEEN . 関連キーワード time zone times date parts timezone timestamp temporal year table part time... - https://man.mtool.work/duckdb/1.3/guides/sql_features/timestamps.html
- Versioning of Extensions – DuckDB 7387
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...ghtly builds for extensions are slightly complicated due to the fact that currently DuckDB extensions binaries are tightly bound to a single DuckDB version. Because of this tight connection, there is a potential risk for a combinatorial explosion. The... - https://man.mtool.work/duckdb/1.3/extensions/versioning_of_extensions.html
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