1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
|
#include <drizzled/server_includes.h>
#include <drizzled/natural_join_column.h>
Natural_join_column::Natural_join_column(Field_translator *field_param __attribute__((unused)), TableList *tab)
{
assert(tab->field_translation);
table_field= NULL;
table_ref= tab;
is_common= false;
}
Natural_join_column::Natural_join_column(Field *field_param,
TableList *tab)
{
assert(tab->table == field_param->table);
table_field= field_param;
table_ref= tab;
is_common= false;
}
const char *Natural_join_column::name()
{
return table_field->field_name;
}
Item *Natural_join_column::create_item(THD *thd)
{
return new Item_field(thd, &thd->lex->current_select->context, table_field);
}
Field *Natural_join_column::field()
{
return table_field;
}
const char *Natural_join_column::table_name()
{
assert(table_ref);
return table_ref->alias;
}
const char *Natural_join_column::db_name()
{
/*
Test that TableList::db is the same as st_table_share::db to
ensure consistency. An exception are I_S schema tables, which
are inconsistent in this respect.
*/
assert(!strcmp(table_ref->db,
table_ref->table->s->db.str) ||
(table_ref->schema_table &&
table_ref->table->s->db.str[0] == 0));
return table_ref->db;
}
|