diff options
Diffstat (limited to 'sql/opt_range.h')
| -rw-r--r-- | sql/opt_range.h | 58 |
1 files changed, 58 insertions, 0 deletions
diff --git a/sql/opt_range.h b/sql/opt_range.h index 585f655aeac..1340f0a5525 100644 --- a/sql/opt_range.h +++ b/sql/opt_range.h @@ -288,6 +288,7 @@ public: virtual bool reverse_sorted() = 0; virtual bool unique_key_range() { return false; } + virtual bool clustered_pk_range() { return false; } /* Request that this quick select produces sorted output. Not all quick @@ -350,6 +351,13 @@ public: */ virtual bool is_keys_used(const MY_BITMAP *fields); + /** + Simple sanity check that the quick select has been set up + correctly. Function is overridden by quick selects that merge + indices. + */ + virtual bool is_valid() { return index != MAX_KEY; }; + /* rowid of last row retrieved by this quick select. This is used only when doing ROR-index_merge selects @@ -595,6 +603,24 @@ public: THD *thd; int read_keys_and_merge(); + bool clustered_pk_range() { return test(pk_quick_select); } + + virtual bool is_valid() + { + List_iterator_fast<QUICK_RANGE_SELECT> it(quick_selects); + QUICK_RANGE_SELECT *quick; + bool valid= true; + while ((quick= it++)) + { + if (!quick->is_valid()) + { + valid= false; + break; + } + } + return valid; + } + /* used to get rows collected in Unique */ READ_RECORD read_record; }; @@ -648,6 +674,22 @@ public: */ List<QUICK_RANGE_SELECT> quick_selects; + virtual bool is_valid() + { + List_iterator_fast<QUICK_RANGE_SELECT> it(quick_selects); + QUICK_RANGE_SELECT *quick; + bool valid= true; + while ((quick= it++)) + { + if (!quick->is_valid()) + { + valid= false; + break; + } + } + return valid; + } + /* Merged quick select that uses Clustered PK, if there is one. This quick select is not used for row retrieval, it is used for row retrieval. @@ -699,6 +741,22 @@ public: List<QUICK_SELECT_I> quick_selects; /* Merged quick selects */ + virtual bool is_valid() + { + List_iterator_fast<QUICK_SELECT_I> it(quick_selects); + QUICK_SELECT_I *quick; + bool valid= true; + while ((quick= it++)) + { + if (!quick->is_valid()) + { + valid= false; + break; + } + } + return valid; + } + QUEUE queue; /* Priority queue for merge operation */ MEM_ROOT alloc; /* Memory pool for this and merged quick selects data. */ |