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6f26aac940
from a MERGE view. The problem was in the lost ability to be null for the table of a left join if it is a view/derived table. It hapenned because setup_table_map(), was called earlier then we merged the view or derived. Fixed by propagating new maybe_null flag during Item::update_used_tables(). Change in join_outer.test and join_outer_jcl6.test appeared because IS NULL reported no used tables (i.e. constant) for argument which could not be NULL and new maybe_null flag was propagated for IS NULL argument (Item_field) because table the Item_field belonged to changed its maybe_null status.
63 lines
1.8 KiB
C++
63 lines
1.8 KiB
C++
/* Copyright (C) 2000-2005 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* This file defines all XML functions */
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#ifdef __GNUC__
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#pragma interface /* gcc class implementation */
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#endif
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class Item_xml_str_func: public Item_str_func
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{
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protected:
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String tmp_value, pxml;
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Item *nodeset_func;
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public:
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Item_xml_str_func(Item *a, Item *b):
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Item_str_func(a,b)
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{}
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Item_xml_str_func(Item *a, Item *b, Item *c):
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Item_str_func(a,b,c)
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{}
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void fix_length_and_dec();
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String *parse_xml(String *raw_xml, String *parsed_xml_buf);
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bool check_vcol_func_processor(uchar *int_arg)
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{
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return trace_unsupported_by_check_vcol_func_processor(func_name());
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}
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};
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class Item_func_xml_extractvalue: public Item_xml_str_func
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{
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public:
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Item_func_xml_extractvalue(Item *a,Item *b) :Item_xml_str_func(a,b) {}
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const char *func_name() const { return "extractvalue"; }
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String *val_str(String *);
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};
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class Item_func_xml_update: public Item_xml_str_func
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{
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String tmp_value2, tmp_value3;
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public:
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Item_func_xml_update(Item *a,Item *b,Item *c) :Item_xml_str_func(a,b,c) {}
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const char *func_name() const { return "updatexml"; }
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String *val_str(String *);
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};
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