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DuckDB_% Metadata Functions – DuckDB 15646
This page is for DuckDB 1.3, which is outdated.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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / SQL / Meta Queries Copy Mar ... e views do a SELECT on the duckdb_ table function with the same name, while filtering out those objects that are marked as internal. We mention it here, because if you accidentally omit the parentheses in your duckdb_ table function call, you might still ... but from the identically named view. Example: The duckdb_views() table function returns all views, including those marked internal: SELECT * FROM duckdb_views (); The duckdb_views view returns views that are not marked as internal: SELECT * FROM duckdb_ ...
https://man.mtool.work/duckdb/1.3/sql/meta/duckdb_table_functions.html
Internal Errors – DuckDB 11159
This page is for DuckDB 1.3, which is outdated.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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Development Copy Markdown I ... nternal Errors Internal errors signal an assertion failure within DuckDB. They usually occur due to unexpected conditions or errors in the program ... 's logic. For example, running issue 17002 on DuckDB v1.2.1 results in an internal error. INTERNAL Error: Attempted to access index 3 within vector of size 3 The issue is fixed in DuckDB v1.2.2 and newer v ...
https://man.mtool.work/duckdb/1.3/dev/internal_errors.html
Types – DuckDB 9365
This page is for DuckDB 1.3, which is outdated.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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / C Copy Markdo ... n can be used to check if a specific value is NULL or not. The exception to the auto-cast rule is the duckdb_value_varchar_internal function. This function does not auto-cast and only works for VARCHAR columns. The reason this function exists is that the ... _width ( duckdb_logical_type type ); uint8_t duckdb_decimal_scale ( duckdb_logical_type type ); duckdb_type duckdb_decimal_internal_type ( duckdb_logical_type type ); duckdb_type duckdb_enum_internal_type ( duckdb_logical_type type ); uint32_t duckdb_enu ...
https://man.mtool.work/duckdb/1.3/clients/c/types.html
Complete API – DuckDB 8989
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / C Copy Markdo ... t row ); duckdb_string duckdb_value_string ( duckdb_result * result , idx_t col , idx_t row ); char * duckdb_value_varchar_internal ( duckdb_result * result , idx_t col , idx_t row ); duckdb_string duckdb_value_string_internal ( duckdb_result * result , ... _width ( duckdb_logical_type type ); uint8_t duckdb_decimal_scale ( duckdb_logical_type type ); duckdb_type duckdb_decimal_internal_type ( duckdb_logical_type type ); duckdb_type duckdb_enum_internal_type ( duckdb_logical_type type ); uint32_t duckdb_enu ...
https://man.mtool.work/duckdb/1.3/clients/c/api.html
Crashes – DuckDB 8859
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Guides / Troubleshooting Co ... The process stops with a SIGSEGV (segmentation fault), SIGABRT , etc.: these should never occur. Please submit an issue . Internal errors: an operation may result in an Internal Error , e.g.: INTERNAL Error: Attempted to access index 3 within vector of ... size 3 After encountering an internal error, DuckDB enters a restricted mode where any further operations will result in the following error message: FATAL Erro ...
https://man.mtool.work/duckdb/1.3/guides/troubleshooting/crashes.html
Querying Parquet Metadata – DuckDB 8614
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Data Import / Parquet Files ... ata The parquet_metadata function can be used to query the metadata contained within a Parquet file, which reveals various internal details of the Parquet file such as the statistics of the different columns. This can be useful for figuring out what kind ... ength BIGINT min_is_exact BOOLEAN max_is_exact BOOLEAN Parquet Schema The parquet_schema function can be used to query the internal schema contained within a Parquet file. Note that this is the schema as it is contained within the metadata of the Parquet ...
https://man.mtool.work/duckdb/1.3/data/parquet/metadata.html
Node.js API – DuckDB 8125
This page is for DuckDB 1.3, which is outdated. Switch to the current documentation . Search Shortcut cmd + k | ctrl + k Installation Documentation Getting Started Connect Overview Concurrency Data Import Overview Data Sources CSV Files Ove ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / Node.js (Depr ... rray.<ColumnInfo> ~QueryResult .nextChunk() ⇒ .nextIpcBuffer() ⇒ .asyncIterator() ~Database .close(callback) ⇒ void .close_internal(callback) ⇒ void .wait(callback) ⇒ void .serialize(callback) ⇒ void .parallelize(callback) ⇒ void .connect(path) ⇒ Connect ... ccess_mode access mode config the configuration object callback callback function ~Database .close(callback) ⇒ void .close_internal(callback) ⇒ void .wait(callback) ⇒ void .serialize(callback) ⇒ void .parallelize(callback) ⇒ void .connect(path) ⇒ Connect ...
https://man.mtool.work/duckdb/1.3/clients/nodejs/reference.html
Vectors – DuckDB 7864
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / C Copy Markdo ... r the duckdb_string_is_inlined can be used to check if a string is inlined. Decimals Decimals are stored as integer values internally. The exact native type depends on the width of the decimal type, as shown in the following table: Width NativeType <= 4 ... int16_t <= 9 int32_t <= 18 int64_t <= 38 duckdb_hugeint The duckdb_decimal_internal_type can be used to obtain the internal type of the decimal. Decimals are stored as integer values multiplied by 10^scale ...
https://man.mtool.work/duckdb/1.3/clients/c/vector.html
R-Tree Indexes – DuckDB 7864
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Core Extensions / Spatial C ... R-tree is a balanced tree data structure that stores the approximate minimum bounding rectangle of each geometry (and the internal ID of the corresponding row) in the leaf nodes, and the bounding rectangle enclosing all of the child nodes in each intern ... , but it will also require more memory to store the tree itself and be more punishing when querying larger regions as more internal nodes will have to be traversed. Options The following options can be passed to the WITH clause when creating an R-tree in ...
https://man.mtool.work/duckdb/1.3/core_extensions/spatial/r-tree_indexes.html
Data Chunks – DuckDB 7798
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 ... sqllogictest Introduction Writing Tests Debugging Result Verification Persistent Testing Loops Multiple Connections Catch Internals Overview Storage Versions and Format Execution Format Pivot Sitemap Live Demo Documentation / Client APIs / C Copy Markdo ... kDB. Be aware, however, that correctly interfacing with DuckDB using the data chunk API does require knowledge of DuckDB's internal vector format. Data chunks can be used in two manners: Reading Data : Data chunks can be obtained from query results using ... db_append_data_chunk to write data to the database. The primary manner of interfacing with data chunks is by obtaining the internal vectors of the data chunk using the duckdb_data_chunk_get_vector method. Afterwards, the vector methods can be used to rea ...
https://man.mtool.work/duckdb/1.3/clients/c/data_chunk.html
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