diff options
Diffstat (limited to 'sql/sql_lex.h')
| -rw-r--r-- | sql/sql_lex.h | 89 |
1 files changed, 76 insertions, 13 deletions
diff --git a/sql/sql_lex.h b/sql/sql_lex.h index 1c72586e5f7..bbc91c2f987 100644 --- a/sql/sql_lex.h +++ b/sql/sql_lex.h @@ -1,4 +1,4 @@ -/* Copyright 2000-2008 MySQL AB, 2008 Sun Microsystems, Inc. +/* Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved. 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 @@ -11,7 +11,7 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software - Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ /** @defgroup Semantic_Analysis Semantic Analysis @@ -314,6 +314,10 @@ struct LEX_MASTER_INFO } }; +typedef struct st_lex_reset_slave +{ + bool all; +} LEX_RESET_SLAVE; enum sub_select_type { @@ -865,16 +869,7 @@ public: joins on the right. */ List<String> *prev_join_using; - /* - Bitmap used in the ONLY_FULL_GROUP_BY_MODE to prevent mixture of aggregate - functions and non aggregated fields when GROUP BY list is absent. - Bits: - 0 - non aggregated fields are used in this select, - defined as NON_AGG_FIELD_USED. - 1 - aggregate functions are used in this select, - defined as SUM_FUNC_USED. - */ - uint8 full_group_by_flag; + void init_query(); void init_select(); st_select_lex_unit* master_unit(); @@ -1015,7 +1010,22 @@ public: bool save_leaf_tables(THD *thd); bool save_prep_leaf_tables(THD *thd); -private: + /* + For MODE_ONLY_FULL_GROUP_BY we need to maintain two flags: + - Non-aggregated fields are used in this select. + - Aggregate functions are used in this select. + In MODE_ONLY_FULL_GROUP_BY only one of these may be true. + */ + bool non_agg_field_used() const { return m_non_agg_field_used; } + bool agg_func_used() const { return m_agg_func_used; } + + void set_non_agg_field_used(bool val) { m_non_agg_field_used= val; } + void set_agg_func_used(bool val) { m_agg_func_used= val; } + +private: + bool m_non_agg_field_used; + bool m_agg_func_used; + /* current index hint kind. used in filling up index_hints */ enum index_hint_type current_index_hint_type; index_clause_map current_index_hint_clause; @@ -1341,6 +1351,48 @@ public: */ BINLOG_STMT_UNSAFE_MIXED_STATEMENT, + /** + INSERT...IGNORE SELECT is unsafe because which rows are ignored depends + on the order that rows are retrieved by SELECT. This order cannot be + predicted and may differ on master and the slave. + */ + BINLOG_STMT_UNSAFE_INSERT_IGNORE_SELECT, + + /** + INSERT...SELECT...UPDATE is unsafe because which rows are updated depends + on the order that rows are retrieved by SELECT. This order cannot be + predicted and may differ on master and the slave. + */ + BINLOG_STMT_UNSAFE_INSERT_SELECT_UPDATE, + + /** + INSERT...REPLACE SELECT is unsafe because which rows are replaced depends + on the order that rows are retrieved by SELECT. This order cannot be + predicted and may differ on master and the slave. + */ + BINLOG_STMT_UNSAFE_REPLACE_SELECT, + + /** + CREATE TABLE... IGNORE... SELECT is unsafe because which rows are ignored + depends on the order that rows are retrieved by SELECT. This order cannot + be predicted and may differ on master and the slave. + */ + BINLOG_STMT_UNSAFE_CREATE_IGNORE_SELECT, + + /** + CREATE TABLE...REPLACE... SELECT is unsafe because which rows are replaced + depends on the order that rows are retrieved from SELECT. This order + cannot be predicted and may differ on master and the slave + */ + BINLOG_STMT_UNSAFE_CREATE_REPLACE_SELECT, + + /** + UPDATE...IGNORE is unsafe because which rows are ignored depends on the + order that rows are updated. This order cannot be predicted and may differ + on master and the slave. + */ + BINLOG_STMT_UNSAFE_UPDATE_IGNORE, + /* The last element of this enumeration type. */ BINLOG_STMT_UNSAFE_COUNT }; @@ -2323,6 +2375,7 @@ struct LEX: public Query_tables_list LEX_MASTER_INFO mi; // used by CHANGE MASTER LEX_SERVER_OPTIONS server_options; USER_RESOURCES mqh; + LEX_RESET_SLAVE reset_slave_info; ulong type; /* This variable is used in post-parse stage to declare that sum-functions, @@ -2495,6 +2548,16 @@ struct LEX: public Query_tables_list bool escape_used; bool is_lex_started; /* If lex_start() did run. For debugging. */ + /* + The set of those tables whose fields are referenced in all subqueries + of the query. + TODO: possibly this it is incorrect to have used tables in LEX because + with subquery, it is not clear what does the field mean. To fix this + we should aggregate used tables information for selected expressions + into the select_lex. + */ + table_map used_tables; + LEX(); virtual ~LEX() |