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| author | Monty <monty@mariadb.org> | 2018-06-16 12:03:15 +0300 |
|---|---|---|
| committer | Monty <monty@mariadb.org> | 2018-06-19 16:23:34 +0300 |
| commit | 831df10981b7851871e1f3b8f04079df0cf5da36 (patch) | |
| tree | a251a9030404924711ed8c7cdbd5da223e455cc4 /sql/sql_union.cc | |
| parent | 5ba6cee01255186ea77a69f122d3a15c07f44f6d (diff) | |
| download | mariadb-git-831df10981b7851871e1f3b8f04079df0cf5da36.tar.gz | |
Add PART_INDIRECT_KEY_FLAG
This is to mark that a field is indirectly part of a key, which simplifes
checking if we need to have this field up to date to evaluate a key.
For example:
CREATE TABLE t1 (a int, b int as (a) virtual,
c int as (b) virtual, index(c))
would mark a and b with PART_INDIRECT_KEY_FLAG.
c is marked with PART_KEY_FLAG as before.
Diffstat (limited to 'sql/sql_union.cc')
| -rw-r--r-- | sql/sql_union.cc | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/sql/sql_union.cc b/sql/sql_union.cc index 178d7393878..b409790c044 100644 --- a/sql/sql_union.cc +++ b/sql/sql_union.cc @@ -185,7 +185,7 @@ select_union::create_result_table(THD *thd_arg, List<Item> *column_types, table->keys_in_use_for_query.clear_all(); for (uint i=0; i < table->s->fields; i++) - table->field[i]->flags &= ~PART_KEY_FLAG; + table->field[i]->flags &= ~(PART_KEY_FLAG | PART_INDIRECT_KEY_FLAG); if (create_table) { @@ -219,7 +219,7 @@ select_union_recursive::create_result_table(THD *thd_arg, incr_table->keys_in_use_for_query.clear_all(); for (uint i=0; i < table->s->fields; i++) - incr_table->field[i]->flags &= ~PART_KEY_FLAG; + incr_table->field[i]->flags &= ~(PART_KEY_FLAG | PART_INDIRECT_KEY_FLAG); TABLE *rec_table= 0; if (! (rec_table= create_tmp_table(thd_arg, &tmp_table_param, *column_types, @@ -230,7 +230,7 @@ select_union_recursive::create_result_table(THD *thd_arg, rec_table->keys_in_use_for_query.clear_all(); for (uint i=0; i < table->s->fields; i++) - rec_table->field[i]->flags &= ~PART_KEY_FLAG; + rec_table->field[i]->flags &= ~(PART_KEY_FLAG | PART_INDIRECT_KEY_FLAG); if (rec_tables.push_back(rec_table)) return true; |