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DuckDB 1.3 ドキュメント 全文検索
Results of 1 - 4 of about 4 for validity (0.004 sec.)
- Vectors – DuckDB 12112
- This page is for DuckDB 1.3, which is outdated.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
...a value is NULL , the values contained within the primary array at that index is undefined (and can be uninitialized). The validity mask is a bitmask consisting of uint64_t elements. For every 64 values in the vector, one uint64_t element exists (rounded...up). The validity mask has its bit set to 1 if the value is valid, or set to 0 if the value is invalid (i.e . NULL ). The bits of the bitmas...k can be read directly, or the slower helper method duckdb_validity_row_is_valid can be used to check whether or not a value is NULL . The duckdb_vector_get_validity returns a pointer to the... - https://man.mtool.work/duckdb/1.3/clients/c/vector.html
- Complete API – DuckDB 9579
- This page is for DuckDB 1.3, which is outdated.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
...column_type ( duckdb_vector vector ); void * duckdb_vector_get_data ( duckdb_vector vector ); uint64_t * duckdb_vector_get_validity ( duckdb_vector vector ); void duckdb_vector_ensure_validity_writable ( duckdb_vector vector ); void duckdb_vector_assign_...ector , duckdb_value value ); void duckdb_vector_reference_vector ( duckdb_vector to_vector , duckdb_vector from_vector ); Validity Mask Functions bool duckdb_validity_row_is_valid ( uint64_t * validity , idx_t row ); void duckdb_validity_set_row_validit...y ( uint64_t * validity , idx_t row , bool valid ); void duckdb_validity_set_row_invalid ( uint64_t * validity , idx_t row ); void duckdb_validity... - https://man.mtool.work/duckdb/1.3/clients/c/api.html
- Query – DuckDB 7840
- This page is for DuckDB 1.3, which is outdated.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
...data_chunk_get_vector ( result , 0 ); int32_t * col1_data = ( int32_t * ) duckdb_vector_get_data ( col1 ); uint64_t * col1_validity = duckdb_vector_get_validity ( col1 ); // get the second column duckdb_vector col2 = duckdb_data_chunk_get_vector ( result..., 1 ); int32_t * col2_data = ( int32_t * ) duckdb_vector_get_data ( col2 ); uint64_t * col2_validity = duckdb_vector_get_validity ( col2 ); // iterate over the rows for ( idx_t row = 0 ; row < row_count ; row ++ ) { if ( du...ckdb_validity_row_is_valid ( col1_validity , row )) { printf ( "%d" , col1_data [ row ]); } else { printf ( "NULL" ); } printf ( "," );... - https://man.mtool.work/duckdb/1.3/clients/c/query.html
- Data Chunks – DuckDB 7415
- 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
...a_chunk * chunk ); Parameters chunk : The data chunk to destroy. duckdb_data_chunk_reset Resets a data chunk, clearing the validity masks and setting the cardinality of the data chunk to 0. After calling this method, you must call duckdb_vector_get_valid...ity and duckdb_vector_get_data to obtain current data and validity pointers Syntax void duckdb_data_chunk_reset ( duckdb_data_chunk chunk ); Parameters chunk : The data chunk to reset. duck...pes Syntax Parameters chunks count destroy vectors DuckDB using used create reset Return tuples interfacing method columns validity current 関連するページ Query Vectors Appender Types Writing Tests Configuration See this page as Markdown Edit this page o... - https://man.mtool.work/duckdb/1.3/clients/c/data_chunk.html
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