duckdb::QueryResult::QueryResultIterator Class Reference

The row-based query result iterator. Invoking the. More...

Collaboration diagram for duckdb::QueryResult::QueryResultIterator:

Public Member Functions
	QueryResultIterator (optional_ptr< QueryResult > result_p=nullptr)
void	Next ()
QueryResultIterator &	operator++ ()
bool	operator!= (const QueryResultIterator &other) const
bool	operator== (const QueryResultIterator &other) const
const QueryResultRow &	operator* () const

Public Attributes
QueryResultRow	current_row
optional_ptr< QueryResult >	result
idx_t	base_row

Detailed Description

The row-based query result iterator. Invoking the.

Constructor & Destructor Documentation

QueryResultIterator()

duckdb::QueryResult::QueryResultIterator::QueryResultIterator ( optional_ptr< QueryResult >  result_p = nullptr )

inlineexplicit

                                                                                   : result(result_p), base_row(0) {
            if (result) {
                current_row.chunk = shared_ptr<DataChunk>(result->Fetch().release());
                if (!current_row.chunk) {
                    result = nullptr;
                }
            }
        }

Member Function Documentation

Next()

void duckdb::QueryResult::QueryResultIterator::Next ( )

inline

                    {
            if (!current_row.chunk) {
                return;
            }
            current_row.row++;
            if (current_row.row >= current_row.chunk->size()) {
                base_row += current_row.chunk->size();
                current_row.chunk = shared_ptr<DataChunk>(result->Fetch().release());
                current_row.row = 0;
                if (!current_row.chunk || current_row.chunk->size() == 0) {
                    // exhausted all rows
                    base_row = 0;
                    result = nullptr;
                    current_row.chunk.reset();
                }
            }
        }

operator++()

QueryResultIterator & duckdb::QueryResult::QueryResultIterator::operator++ ( )

inline

                                          {
            Next();
            return *this;
        }

operator!=()

bool duckdb::QueryResult::QueryResultIterator::operator!= ( const QueryResultIterator &  other ) const

inline

                                                                {
            return result != other.result || base_row != other.base_row || current_row.row != other.current_row.row;
        }

operator==()

bool duckdb::QueryResult::QueryResultIterator::operator== ( const QueryResultIterator &  other ) const

inline

                                                                {
            return !(*this != other);
        }

operator*()

const QueryResultRow & duckdb::QueryResult::QueryResultIterator::operator* ( ) const

inline

                                                {
            return current_row;
        }

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The documentation for this class was generated from the following file:

• external/duckdb/duckdb.hpp