1
/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
2
* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
4
* Copyright (C) 2008 Sun Microsystems
6
* This program is free software; you can redistribute it and/or modify
7
* it under the terms of the GNU General Public License as published by
8
* the Free Software Foundation; version 2 of the License.
10
* This program is distributed in the hope that it will be useful,
11
* but WITHOUT ANY WARRANTY; without even the implied warranty of
12
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13
* GNU General Public License for more details.
15
* You should have received a copy of the GNU General Public License
16
* along with this program; if not, write to the Free Software
17
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
20
#ifndef DRIZZLED_FUNCTIONS_ROLLUP_CONST_H
21
#define DRIZZLED_FUNCTIONS_ROLLUP_CONST_H
23
#include <drizzled/functions/func.h>
26
Objects of this class are used for ROLLUP queries to wrap up
27
each constant item referred to in GROUP BY list.
30
class Item_func_rollup_const :public Item_func
33
Item_func_rollup_const(Item *a) :Item_func(a)
36
name_length= a->name_length;
38
double val_real() { return args[0]->val_real(); }
39
int64_t val_int() { return args[0]->val_int(); }
40
String *val_str(String *str) { return args[0]->val_str(str); }
41
my_decimal *val_decimal(my_decimal *dec) { return args[0]->val_decimal(dec); }
42
const char *func_name() const { return "rollup_const"; }
43
bool const_item() const { return 0; }
44
Item_result result_type() const { return args[0]->result_type(); }
45
void fix_length_and_dec()
47
collation= args[0]->collation;
48
max_length= args[0]->max_length;
49
decimals=args[0]->decimals;
50
/* The item could be a NULL constant. */
51
null_value= args[0]->is_null();
56
#endif /* DRIZZLED_FUNCTIONS_ROLLUP_CONST_H */