MySQL  8.0.19
Source Code Documentation
basic_row_iterators.h File Reference
#include <sys/types.h>
#include <memory>
#include "map_helpers.h"
#include "my_alloc.h"
#include "my_base.h"
#include "my_inttypes.h"
#include "sql/mem_root_array.h"
#include "sql/row_iterator.h"
#include "sql/sql_list.h"

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Classes

class  TableScanIterator
 Scan a table from beginning to end. More...
 
class  IndexScanIterator< Reverse >
 Perform a full index scan along an index. More...
 
class  IndexRangeScanIterator
 Scan a given range of the table (a “quick”), using an index. More...
 
class  SortBufferIterator< Packed_addon_fields >
 Fetch the records from a memory buffer. More...
 
class  SortBufferIndirectIterator
 Fetch the record IDs from a memory buffer, but the records themselves from the table on disk. More...
 
class  SortFileIterator< Packed_addon_fields >
 Fetch the records from a tempoary file. More...
 
class  SortFileIndirectIterator
 Fetch the record IDs from a temporary file, then the records themselves from the table on disk. More...
 
class  FakeSingleRowIterator
 
class  UnqualifiedCountIterator
 An iterator for unqualified COUNT(*) (ie., no WHERE, no join conditions, etc.), taking a special fast path in the handler. More...
 
class  ZeroRowsIterator
 A simple iterator that takes no input and produces zero output rows. More...
 
class  ZeroRowsAggregatedIterator
 Like ZeroRowsIterator, but produces a single output row, since there are aggregation functions present and no GROUP BY. More...
 
class  FollowTailIterator
 FollowTailIterator is a special version of TableScanIterator that is used as part of WITH RECURSIVE queries. More...
 
class  TableValueConstructorIterator
 TableValueConstructor is the iterator for the table value constructor case of a query_primary (i.e. More...
 

Detailed Description

Row iterators that scan a single table without reference to other tables or iterators.