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Added index_merge access method

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psergey@psergey.(none)
2003-11-13 17:52:02 +03:00
parent 0466c25078
commit ca6c4cc30b
12 changed files with 1244 additions and 155 deletions
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5
sql/sql_select.h
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@@ -76,7 +76,7 @@ typedef struct st_join_cache {
enum join_type { JT_UNKNOWN,JT_SYSTEM,JT_CONST,JT_EQ_REF,JT_REF,JT_MAYBE_REF,
JT_ALL, JT_RANGE, JT_NEXT, JT_FT, JT_REF_OR_NULL,
JT_SIMPLE_IN, JT_INDEX_IN};
JT_SIMPLE_IN, JT_INDEX_IN, JT_INDEX_MERGE};
class JOIN;
@@ -85,7 +85,7 @@ typedef struct st_join_table {
KEYUSE *keyuse; /* pointer to first used key */
SQL_SELECT *select;
COND *select_cond;
QUICK_SELECT *quick;
QUICK_SELECT_I *quick;
Item *on_expr;
const char *info;
byte *null_ref_key;
@@ -307,6 +307,7 @@ void copy_fields(TMP_TABLE_PARAM *param);
void copy_funcs(Item **func_ptr);
bool create_myisam_from_heap(THD *thd, TABLE *table, TMP_TABLE_PARAM *param,
int error, bool ignore_last_dupp_error);
uint find_shortest_key(TABLE *table, key_map usable_keys);
/* functions from opt_sum.cc */
int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds);