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Merge branch 'mysql/5.5' into 5.5

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This commit is contained in:
Sergei Golubchik
2016-04-20 15:25:55 +02:00
parent 1bc0b0b524 e7061f7e5a
commit b069d19284
48 changed files with 476 additions and 159 deletions
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50
sql/sql_select.cc
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@ -1,4 +1,4 @@
/* Copyright (c) 2000, 2015 Oracle and/or its affiliates.
/* Copyright (c) 2000, 2016 Oracle and/or its affiliates.
Copyright (c) 2009, 2016 MariaDB
This program is free software; you can redistribute it and/or modify
@ -23128,32 +23128,52 @@ static void print_join(THD *thd,
/* List is reversed => we should reverse it before using */
List_iterator_fast<TABLE_LIST> ti(*tables);
TABLE_LIST **table;
uint non_const_tables= 0;
/*
If the QT_NO_DATA_EXPANSION flag is specified, we print the
original table list, including constant tables that have been
optimized away, as the constant tables may be referenced in the
expression printed by Item_field::print() when this flag is given.
Otherwise, only non-const tables are printed.
Example:
Original SQL:
select * from (select 1) t
Printed without QT_NO_DATA_EXPANSION:
select '1' AS `1` from dual
Printed with QT_NO_DATA_EXPANSION:
select `t`.`1` from (select 1 AS `1`) `t`
*/
const bool print_const_tables= (query_type & QT_NO_DATA_EXPANSION);
size_t tables_to_print= 0;
for (TABLE_LIST *t= ti++; t ; t= ti++)
{
/*
See comment in print_table_array() about the second part of the
condition
*/
if (!t->optimized_away && !is_eliminated_table(eliminated_tables, t))
non_const_tables++;
/* See comment in print_table_array() about the second condition */
if (print_const_tables || !t->optimized_away)
if (!is_eliminated_table(eliminated_tables, t))
tables_to_print++;
}
if (!non_const_tables)
if (tables_to_print == 0)
{
str->append(STRING_WITH_LEN("dual"));
return; // all tables were optimized away
}
ti.rewind();
if (!(table= (TABLE_LIST **)thd->alloc(sizeof(TABLE_LIST*) *
non_const_tables)))
if (!(table= static_cast<TABLE_LIST **>(thd->alloc(sizeof(TABLE_LIST*) *
tables_to_print))))
return; // out of memory
TABLE_LIST *tmp, **t= table + (non_const_tables - 1);
TABLE_LIST *tmp, **t= table + (tables_to_print - 1);
while ((tmp= ti++))
{
if (tmp->optimized_away || is_eliminated_table(eliminated_tables, tmp))
if (tmp->optimized_away && !print_const_tables)
continue;
if (is_eliminated_table(eliminated_tables, tmp))
continue;
*t--= tmp;
}
@ -23173,7 +23193,7 @@ static void print_join(THD *thd,
*/
if ((*table)->sj_inner_tables)
{
TABLE_LIST **end= table + non_const_tables;
TABLE_LIST **end= table + tables_to_print;
for (TABLE_LIST **t2= table; t2!=end; t2++)
{
if (!(*t2)->sj_inner_tables)
@ -23186,7 +23206,7 @@ static void print_join(THD *thd,
}
}
print_table_array(thd, eliminated_tables, str, table,
table + non_const_tables, query_type);
table + tables_to_print, query_type);
}
/**