diff options
Diffstat (limited to 'sql/sql_select.cc')
| -rw-r--r-- | sql/sql_select.cc | 25 |
1 files changed, 24 insertions, 1 deletions
diff --git a/sql/sql_select.cc b/sql/sql_select.cc index 55caa6d1ab9..514ba947172 100644 --- a/sql/sql_select.cc +++ b/sql/sql_select.cc @@ -1,5 +1,5 @@ /* Copyright (c) 2000, 2015 Oracle and/or its affiliates. - Copyright (c) 2009, 2015 MariaDB + Copyright (c) 2009, 2016 MariaDB This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by @@ -16853,6 +16853,12 @@ bool create_internal_tmp_table(TABLE *table, KEY *keyinfo, goto err; bzero(seg, sizeof(*seg) * keyinfo->user_defined_key_parts); + /* + Note that a similar check is performed during + subquery_types_allow_materialization. See MDEV-7122 for more details as + to why. Whenever this changes, it must be updated there as well, for + all tmp_table engines. + */ if (keyinfo->key_length > table->file->max_key_length() || keyinfo->user_defined_key_parts > table->file->max_key_parts() || share->uniques) @@ -17026,6 +17032,12 @@ bool create_internal_tmp_table(TABLE *table, KEY *keyinfo, goto err; bzero(seg, sizeof(*seg) * keyinfo->user_defined_key_parts); + /* + Note that a similar check is performed during + subquery_types_allow_materialization. See MDEV-7122 for more details as + to why. Whenever this changes, it must be updated there as well, for + all tmp_table engines. + */ if (keyinfo->key_length > table->file->max_key_length() || keyinfo->user_defined_key_parts > table->file->max_key_parts() || share->uniques) @@ -18471,7 +18483,18 @@ int join_read_key2(THD *thd, JOIN_TAB *tab, TABLE *table, TABLE_REF *table_ref) } } + /* + The following is needed when one makes ref (or eq_ref) access from row + comparisons: one must call row->bring_value() to get the new values. + */ + if (tab && tab->bush_children) + { + TABLE_LIST *emb_sj_nest= tab->bush_children->start->emb_sj_nest; + emb_sj_nest->sj_subq_pred->left_expr->bring_value(); + } + /* TODO: Why don't we do "Late NULLs Filtering" here? */ + if (cmp_buffer_with_ref(thd, table, table_ref) || (table->status & (STATUS_GARBAGE | STATUS_NO_PARENT | STATUS_NULL_ROW))) { |