diff options
Diffstat (limited to 'sql/sql_lex.cc')
| -rw-r--r-- | sql/sql_lex.cc | 102 |
1 files changed, 40 insertions, 62 deletions
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc index 3e53f8e0211..6f7edd5623b 100644 --- a/sql/sql_lex.cc +++ b/sql/sql_lex.cc @@ -1,4 +1,4 @@ -/* Copyright (c) 2000, 2012, Oracle and/or its affiliates. +/* Copyright (c) 2000, 2013, Oracle and/or its affiliates. Copyright (c) 2009, 2013, Monty Program Ab. This program is free software; you can redistribute it and/or modify @@ -494,12 +494,13 @@ void lex_start(THD *thd) lex->select_lex.ftfunc_list= &lex->select_lex.ftfunc_list_alloc; lex->select_lex.group_list.empty(); lex->select_lex.order_list.empty(); + lex->m_sql_cmd= NULL; lex->duplicates= DUP_ERROR; lex->ignore= 0; lex->spname= NULL; lex->sphead= NULL; lex->spcont= NULL; - lex->m_stmt= NULL; + lex->m_sql_cmd= NULL; lex->proc_list.first= 0; lex->escape_used= FALSE; lex->query_tables= 0; @@ -509,6 +510,7 @@ void lex_start(THD *thd) lex->parse_vcol_expr= FALSE; lex->check_exists= FALSE; lex->verbose= 0; + lex->contains_plaintext_password= false; lex->name.str= 0; lex->name.length= 0; @@ -1758,50 +1760,6 @@ int lex_one_token(void *arg, void *yythd) } -/** - Construct a copy of this object to be used for mysql_alter_table - and mysql_create_table. - - Historically, these two functions modify their Alter_info - arguments. This behaviour breaks re-execution of prepared - statements and stored procedures and is compensated by always - supplying a copy of Alter_info to these functions. - - @return You need to use check the error in THD for out - of memory condition after calling this function. -*/ - -Alter_info::Alter_info(const Alter_info &rhs, MEM_ROOT *mem_root) - :drop_list(rhs.drop_list, mem_root), - alter_list(rhs.alter_list, mem_root), - key_list(rhs.key_list, mem_root), - create_list(rhs.create_list, mem_root), - flags(rhs.flags), - keys_onoff(rhs.keys_onoff), - tablespace_op(rhs.tablespace_op), - partition_names(rhs.partition_names, mem_root), - num_parts(rhs.num_parts), - change_level(rhs.change_level), - datetime_field(rhs.datetime_field), - error_if_not_empty(rhs.error_if_not_empty) -{ - /* - Make deep copies of used objects. - This is not a fully deep copy - clone() implementations - of Alter_drop, Alter_column, Key, foreign_key, Key_part_spec - do not copy string constants. At the same length the only - reason we make a copy currently is that ALTER/CREATE TABLE - code changes input Alter_info definitions, but string - constants never change. - */ - list_copy_and_replace_each_value(drop_list, mem_root); - list_copy_and_replace_each_value(alter_list, mem_root); - list_copy_and_replace_each_value(key_list, mem_root); - list_copy_and_replace_each_value(create_list, mem_root); - /* partition_names are not deeply copied currently */ -} - - void trim_whitespace(CHARSET_INFO *cs, LEX_STRING *str) { /* @@ -1894,9 +1852,11 @@ void st_select_lex::init_query() cond_count= between_count= with_wild= 0; max_equal_elems= 0; ref_pointer_array= 0; + ref_pointer_array_size= 0; select_n_where_fields= 0; select_n_reserved= 0; select_n_having_items= 0; + n_sum_items= 0; n_child_sum_items= 0; subquery_in_having= explicit_limit= 0; is_item_list_lookup= 0; @@ -2209,12 +2169,13 @@ bool st_select_lex_node::inc_in_sum_expr() { return 1; } uint st_select_lex_node::get_in_sum_expr() { return 0; } TABLE_LIST* st_select_lex_node::get_table_list() { return 0; } List<Item>* st_select_lex_node::get_item_list() { return 0; } -TABLE_LIST *st_select_lex_node::add_table_to_list (THD *thd, Table_ident *table, +TABLE_LIST *st_select_lex_node::add_table_to_list(THD *thd, Table_ident *table, LEX_STRING *alias, ulong table_join_options, thr_lock_type flags, enum_mdl_type mdl_type, List<Index_hint> *hints, + List<String> *partition_names, LEX_STRING *option) { return 0; @@ -2257,6 +2218,11 @@ bool st_select_lex::add_order_to_list(THD *thd, Item *item, bool asc) } +bool st_select_lex::add_gorder_to_list(THD *thd, Item *item, bool asc) +{ + return add_to_list(thd, gorder_list, item, asc); +} + bool st_select_lex::add_item_to_list(THD *thd, Item *item) { DBUG_ENTER("st_select_lex::add_item_to_list"); @@ -2327,11 +2293,6 @@ ulong st_select_lex::get_table_join_options() bool st_select_lex::setup_ref_array(THD *thd, uint order_group_num) { - DBUG_ENTER("st_select_lex::setup_ref_array"); - - if (ref_pointer_array) - DBUG_RETURN(0); - // find_order_in_list() may need some extra space, so multiply by two. order_group_num*= 2; @@ -2339,14 +2300,31 @@ bool st_select_lex::setup_ref_array(THD *thd, uint order_group_num) We have to create array in prepared statement memory if it is a prepared statement */ - ref_pointer_array= - (Item **)thd->stmt_arena->alloc(sizeof(Item*) * (n_child_sum_items + - item_list.elements + - select_n_reserved + - select_n_having_items + - select_n_where_fields + - order_group_num)*5); - DBUG_RETURN(ref_pointer_array == 0); + Query_arena *arena= thd->stmt_arena; + const uint n_elems= (n_sum_items + + n_child_sum_items + + item_list.elements + + select_n_reserved + + select_n_having_items + + select_n_where_fields + + order_group_num) * 5; + if (ref_pointer_array != NULL) + { + /* + We need to take 'n_sum_items' into account when allocating the array, + and this may actually increase during the optimization phase due to + MIN/MAX rewrite in Item_in_subselect::single_value_transformer. + In the usual case we can reuse the array from the prepare phase. + If we need a bigger array, we must allocate a new one. + */ + if (ref_pointer_array_size >= n_elems) + return false; + } + ref_pointer_array= static_cast<Item**>(arena->alloc(sizeof(Item*) * n_elems)); + if (ref_pointer_array != NULL) + ref_pointer_array_size= n_elems; + + return ref_pointer_array == NULL; } @@ -4315,8 +4293,8 @@ int st_select_lex_unit::print_explain(select_result_sink *output, bool LEX::is_partition_management() const { return (sql_command == SQLCOM_ALTER_TABLE && - (alter_info.flags == ALTER_ADD_PARTITION || - alter_info.flags == ALTER_REORGANIZE_PARTITION)); + (alter_info.flags == Alter_info::ALTER_ADD_PARTITION || + alter_info.flags == Alter_info::ALTER_REORGANIZE_PARTITION)); } #ifdef MYSQL_SERVER |