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Commit a21cd97c authored by Georgi Kodinov's avatar Georgi Kodinov
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Bug #45261 : Crash, stored procedure + decimal 

Bug #48370  Absolutely wrong calculations with GROUP BY and
  decimal fields when using IF

Added the test cases in the above two bugs for regression
testing.
Added additional tests that demonstrate a incomplete fix.
Added a new factory method for Field_new_decimal to 
create a field from an (decimal returning) Item.
In the new method made sure that all the precision and 
length variables are capped in a proper way. 
This is required because Item's can have larger precision
than the decimal fields and thus need to be capped when
creating a field based on an Item type.
Fixed the wrong typecast to Item_decimal.
parent fad34c34
Hide whitespace changes
Inline Side-by-side
Showing with 560 additions and 85 deletions
mysql-test/r/type_newdecimal.result
View file @ a21cd97c
......@@ -1630,3 +1630,287 @@ SELECT my_col FROM t1;
my_col
0.012345687012345687012345687012
DROP TABLE t1;
#
# Bug#45261: Crash, stored procedure + decimal
#
DROP TABLE IF EXISTS t1;
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,0) NO 0
SELECT * FROM t1;
c1
99999999999999999999999999999999999999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001.
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,0) NO 0
SELECT * FROM t1;
c1
99999999999999999999999999999999999999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001.1 /* 1 */
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,0) NO 0
SELECT * FROM t1;
c1
99999999999999999999999999999999999999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 82 */ 1000000000000000000000000000000000000000000000000000000000000000000000000000000001
AS c1;
Warnings:
Error 1292 Truncated incorrect DECIMAL value: ''
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,0) NO 0
SELECT * FROM t1;
c1
99999999999999999999999999999999999999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 40 */ 1000000000000000000000000000000000000001.1000000000000000000000000000000000000001 /* 40 */
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
99999999999999999999999999999999999.999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 1 */ 1.10000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 80 */
AS c1;
DESC t1;
Field Type Null Key Default Extra
c1 decimal(31,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
1.100000000000000000000000000000
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 1 */ 1.100000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 81 */
AS c1;
DESC t1;
Field Type Null Key Default Extra
c1 decimal(31,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
1.100000000000000000000000000000
DROP TABLE t1;
CREATE TABLE t1 SELECT
.100000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 81 */
AS c1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(30,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
0.100000000000000000000000000000
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 45 */ 123456789012345678901234567890123456789012345.123456789012345678901234567890123456789012345 /* 45 */
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
99999999999999999999999999999999999.999999999999999999999999999999
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 65 */ 12345678901234567890123456789012345678901234567890123456789012345.1 /* 1 */
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,1) NO 0.0
SELECT * FROM t1;
c1
9999999999999999999999999999999999999999999999999999999999999999.9
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 66 */ 123456789012345678901234567890123456789012345678901234567890123456.1 /* 1 */
AS c1;
Warnings:
Warning 1264 Out of range value for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,1) NO 0.0
SELECT * FROM t1;
c1
9999999999999999999999999999999999999999999999999999999999999999.9
DROP TABLE t1;
CREATE TABLE t1 SELECT
.123456789012345678901234567890123456789012345678901234567890123456 /* 66 */
AS c1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(30,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
0.123456789012345678901234567890
DROP TABLE t1;
CREATE TABLE t1 AS SELECT 123.1234567890123456789012345678901 /* 31 */ AS c1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 1
DESC t1;
Field Type Null Key Default Extra
c1 decimal(33,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
123.123456789012345678901234567890
DROP TABLE t1;
CREATE TABLE t1 SELECT 1.1 + CAST(1 AS DECIMAL(65,30)) AS c1;
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,30) NO 0.000000000000000000000000000000
SELECT * FROM t1;
c1
2.100000000000000000000000000000
DROP TABLE t1;
#
# Test that the integer and decimal parts are properly calculated.
#
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT MIN(a + 0.0000000000000000000000000000001) AS c1 FROM t1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 3
DESC t2;
Field Type Null Key Default Extra
c1 decimal(32,30) YES NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT IFNULL(a + 0.0000000000000000000000000000001, NULL) AS c1 FROM t1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 1
Note 1265 Data truncated for column 'c1' at row 2
Note 1265 Data truncated for column 'c1' at row 3
DESC t2;
Field Type Null Key Default Extra
c1 decimal(34,0) YES NULL
DROP TABLE t1,t2;
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT CASE a WHEN 0.1 THEN 0.0000000000000000000000000000000000000000000000000000000000000000001 END AS c1 FROM t1;
Warnings:
Note 1265 Data truncated for column 'c1' at row 1
DESC t2;
Field Type Null Key Default Extra
c1 decimal(65,30) YES NULL
DROP TABLE t1,t2;
#
# Test that variables get maximum precision.
#
SET @decimal= 1.1;
CREATE TABLE t1 SELECT @decimal AS c1;
DESC t1;
Field Type Null Key Default Extra
c1 decimal(65,30) YES NULL
SELECT * FROM t1;
c1
1.100000000000000000000000000000
DROP TABLE t1;
#
# Bug #45261 : Crash, stored procedure + decimal
# Original test by the reporter.
#
# should not crash
CREATE TABLE t1
SELECT .123456789012345678901234567890123456789012345678901234567890123456 AS a;
Warnings:
Note 1265 Data truncated for column 'a' at row 1
DROP TABLE t1;
CREATE PROCEDURE test_proc()
BEGIN
# The las non critical CUSER definition is:
# DECLARE mycursor CURSOR FOR SELECT 1 %
# .12345678912345678912345678912345678912345678912345678912345678912 AS my_col;
DECLARE mycursor CURSOR FOR
SELECT 1 %
.123456789123456789123456789123456789123456789123456789123456789123456789123456789
AS my_col;
OPEN mycursor;
CLOSE mycursor;
END|
# should not crash
CALL test_proc();
DROP PROCEDURE test_proc;
#
# Bug #48370 Absolutely wrong calculations with GROUP BY and
# decimal fields when using IF
#
CREATE TABLE currencies (id int, rate decimal(16,4),
PRIMARY KEY (id), KEY (rate));
INSERT INTO currencies VALUES (11,0.7028);
INSERT INTO currencies VALUES (1,1);
CREATE TABLE payments (
id int,
supplier_id int,
status int,
currency_id int,
vat decimal(7,4),
PRIMARY KEY (id),
KEY currency_id (currency_id),
KEY supplier_id (supplier_id)
);
INSERT INTO payments (id,status,vat,supplier_id,currency_id) VALUES
(3001,2,0.0000,344,11), (1,2,0.0000,1,1);
CREATE TABLE sub_tasks (
id int,
currency_id int,
price decimal(16,4),
discount decimal(10,4),
payment_id int,
PRIMARY KEY (id),
KEY currency_id (currency_id),
KEY payment_id (payment_id)
) ;
INSERT INTO sub_tasks (id, price, discount, payment_id, currency_id) VALUES
(52, 12.60, 0, 3001, 11), (56, 14.58, 0, 3001, 11);
# should return 1 and the same values in col 2 and 3
select STRAIGHT_JOIN
(1 + PAY.vat) AS mult,
SUM(ROUND((SUB.price - ROUND(ROUND(SUB.price, 2) * SUB.discount, 2)) *
CUR.rate / CUR.rate, 2)
) v_net_with_discount,
SUM(ROUND((SUB.price - ROUND(ROUND(SUB.price, 2) * SUB.discount, 1)) *
CUR.rate / CUR.rate , 2)
* (1 + PAY.vat)
) v_total
from
currencies CUR, payments PAY, sub_tasks SUB
where
SUB.payment_id = PAY.id and
PAY.currency_id = CUR.id and
PAY.id > 2
group by PAY.id + 1;
mult v_net_with_discount v_total
1.0000 27.18 27.180000
DROP TABLE currencies, payments, sub_tasks;
End of 5.1 tests
mysql-test/t/type_newdecimal.test
View file @ a21cd97c
......@@ -1286,3 +1286,229 @@ CREATE TABLE t1 SELECT 1 % .1234567891234567891234567891234567891234567891234567
DESCRIBE t1;
SELECT my_col FROM t1;
DROP TABLE t1;
--echo #
--echo # Bug#45261: Crash, stored procedure + decimal
--echo #
--disable_warnings
DROP TABLE IF EXISTS t1;
--enable_warnings
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001.
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 81 */ 100000000000000000000000000000000000000000000000000000000000000000000000000000001.1 /* 1 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 82 */ 1000000000000000000000000000000000000000000000000000000000000000000000000000000001
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 40 */ 1000000000000000000000000000000000000001.1000000000000000000000000000000000000001 /* 40 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 1 */ 1.10000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 80 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 1 */ 1.100000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 81 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
.100000000000000000000000000000000000000000000000000000000000000000000000000000001 /* 81 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 45 */ 123456789012345678901234567890123456789012345.123456789012345678901234567890123456789012345 /* 45 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 65 */ 12345678901234567890123456789012345678901234567890123456789012345.1 /* 1 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
/* 66 */ 123456789012345678901234567890123456789012345678901234567890123456.1 /* 1 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT
.123456789012345678901234567890123456789012345678901234567890123456 /* 66 */
AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 AS SELECT 123.1234567890123456789012345678901 /* 31 */ AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
CREATE TABLE t1 SELECT 1.1 + CAST(1 AS DECIMAL(65,30)) AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # Test that the integer and decimal parts are properly calculated.
--echo #
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT MIN(a + 0.0000000000000000000000000000001) AS c1 FROM t1;
DESC t2;
DROP TABLE t1,t2;
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT IFNULL(a + 0.0000000000000000000000000000001, NULL) AS c1 FROM t1;
DESC t2;
DROP TABLE t1,t2;
CREATE TABLE t1 (a DECIMAL(30,30));
INSERT INTO t1 VALUES (0.1),(0.2),(0.3);
CREATE TABLE t2 SELECT CASE a WHEN 0.1 THEN 0.0000000000000000000000000000000000000000000000000000000000000000001 END AS c1 FROM t1;
DESC t2;
DROP TABLE t1,t2;
--echo #
--echo # Test that variables get maximum precision.
--echo #
SET @decimal= 1.1;
CREATE TABLE t1 SELECT @decimal AS c1;
DESC t1;
SELECT * FROM t1;
DROP TABLE t1;
--echo #
--echo # Bug #45261 : Crash, stored procedure + decimal
--echo # Original test by the reporter.
--echo #
--echo # should not crash
CREATE TABLE t1
SELECT .123456789012345678901234567890123456789012345678901234567890123456 AS a;
DROP TABLE t1;
delimiter |;
CREATE PROCEDURE test_proc()
BEGIN
# The las non critical CUSER definition is:
# DECLARE mycursor CURSOR FOR SELECT 1 %
# .12345678912345678912345678912345678912345678912345678912345678912 AS my_col;
DECLARE mycursor CURSOR FOR
SELECT 1 %
.123456789123456789123456789123456789123456789123456789123456789123456789123456789
AS my_col;
OPEN mycursor;
CLOSE mycursor;
END|
delimiter ;|
--echo # should not crash
CALL test_proc();
DROP PROCEDURE test_proc;
--echo #
--echo # Bug #48370 Absolutely wrong calculations with GROUP BY and
--echo # decimal fields when using IF
--echo #
CREATE TABLE currencies (id int, rate decimal(16,4),
PRIMARY KEY (id), KEY (rate));
INSERT INTO currencies VALUES (11,0.7028);
INSERT INTO currencies VALUES (1,1);
CREATE TABLE payments (
id int,
supplier_id int,
status int,
currency_id int,
vat decimal(7,4),
PRIMARY KEY (id),
KEY currency_id (currency_id),
KEY supplier_id (supplier_id)
);
INSERT INTO payments (id,status,vat,supplier_id,currency_id) VALUES
(3001,2,0.0000,344,11), (1,2,0.0000,1,1);
CREATE TABLE sub_tasks (
id int,
currency_id int,
price decimal(16,4),
discount decimal(10,4),
payment_id int,
PRIMARY KEY (id),
KEY currency_id (currency_id),
KEY payment_id (payment_id)
) ;
INSERT INTO sub_tasks (id, price, discount, payment_id, currency_id) VALUES
(52, 12.60, 0, 3001, 11), (56, 14.58, 0, 3001, 11);
--echo # should return 1 and the same values in col 2 and 3
select STRAIGHT_JOIN
(1 + PAY.vat) AS mult,
SUM(ROUND((SUB.price - ROUND(ROUND(SUB.price, 2) * SUB.discount, 2)) *
CUR.rate / CUR.rate, 2)
) v_net_with_discount,
SUM(ROUND((SUB.price - ROUND(ROUND(SUB.price, 2) * SUB.discount, 1)) *
CUR.rate / CUR.rate , 2)
* (1 + PAY.vat)
) v_total
from
currencies CUR, payments PAY, sub_tasks SUB
where
SUB.payment_id = PAY.id and
PAY.currency_id = CUR.id and
PAY.id > 2
group by PAY.id + 1;
DROP TABLE currencies, payments, sub_tasks;
--echo End of 5.1 tests
sql/field.cc
View file @ a21cd97c
......@@ -2486,6 +2486,50 @@ Field_new_decimal::Field_new_decimal(uint32 len_arg,
}
Field *Field_new_decimal::create_from_item (Item *item)
{
uint8 dec= item->decimals;
uint8 intg= item->decimal_precision() - dec;
uint32 len= item->max_length;
DBUG_ASSERT (item->result_type() == DECIMAL_RESULT);
/*
Trying to put too many digits overall in a DECIMAL(prec,dec)
will always throw a warning. We must limit dec to
DECIMAL_MAX_SCALE however to prevent an assert() later.
*/
if (dec > 0)
{
signed int overflow;
dec= min(dec, DECIMAL_MAX_SCALE);
/*
If the value still overflows the field with the corrected dec,
we'll throw out decimals rather than integers. This is still
bad and of course throws a truncation warning.
+1: for decimal point
*/
const int required_length=
my_decimal_precision_to_length(intg + dec, dec,
item->unsigned_flag);
overflow= required_length - len;
if (overflow > 0)
dec= max(0, dec - overflow); // too long, discard fract
else
/* Corrected value fits. */
len= required_length;
}
return new Field_new_decimal(len, item->maybe_null, item->name,
dec, item->unsigned_flag);
}
int Field_new_decimal::reset(void)
{
store_value(&decimal_zero);
......
sql/field.h
View file @ a21cd97c
......@@ -807,6 +807,7 @@ class Field_new_decimal :public Field_num {
uint is_equal(Create_field *new_field);
virtual const uchar *unpack(uchar* to, const uchar *from,
uint param_data, bool low_byte_first);
static Field *create_from_item (Item *);
};
......
sql/item.cc
View file @ a21cd97c
......@@ -4899,9 +4899,7 @@ Field *Item::tmp_table_field_from_field_type(TABLE *table, bool fixed_length)
switch (field_type()) {
case MYSQL_TYPE_DECIMAL:
case MYSQL_TYPE_NEWDECIMAL:
field= new Field_new_decimal((uchar*) 0, max_length, null_ptr, 0,
Field::NONE, name, decimals, 0,
unsigned_flag);
field= Field_new_decimal::create_from_item(this);
break;
case MYSQL_TYPE_TINY:
field= new Field_tiny((uchar*) 0, max_length, null_ptr, 0, Field::NONE,
......
sql/item_func.cc
View file @ a21cd97c
......@@ -451,45 +451,8 @@ Field *Item_func::tmp_table_field(TABLE *table)
return make_string_field(table);
break;
case DECIMAL_RESULT:
{
uint8 dec= decimals;
uint8 intg= decimal_precision() - dec;
uint32 len= max_length;
/*
Trying to put too many digits overall in a DECIMAL(prec,dec)
will always throw a warning. We must limit dec to
DECIMAL_MAX_SCALE however to prevent an assert() later.
*/
if (dec > 0)
{
int overflow;
dec= min(dec, DECIMAL_MAX_SCALE);
/*
If the value still overflows the field with the corrected dec,
we'll throw out decimals rather than integers. This is still
bad and of course throws a truncation warning.
*/
const int required_length=
my_decimal_precision_to_length(intg + dec, dec,
unsigned_flag);
overflow= required_length - len;
if (overflow > 0)
dec= max(0, dec - overflow); // too long, discard fract
else
/* Corrected value fits. */
len= required_length;
}
field= new Field_new_decimal(len, maybe_null, name, dec, unsigned_flag);
field= Field_new_decimal::create_from_item(this);
break;
}
case ROW_RESULT:
default:
// This case should never be chosen
......
sql/item_sum.cc
View file @ a21cd97c
......@@ -517,8 +517,7 @@ Field *Item_sum::create_tmp_field(bool group, TABLE *table,
name, table->s, collation.collation);
break;
case DECIMAL_RESULT:
field= new Field_new_decimal(max_length, maybe_null, name,
decimals, unsigned_flag);
field= Field_new_decimal::create_from_item(this);
break;
case ROW_RESULT:
default:
......@@ -1270,8 +1269,7 @@ Field *Item_sum_avg::create_tmp_field(bool group, TABLE *table,
0, name, &my_charset_bin);
}
else if (hybrid_type == DECIMAL_RESULT)
field= new Field_new_decimal(max_length, maybe_null, name,
decimals, unsigned_flag);
field= Field_new_decimal::create_from_item(this);
else
field= new Field_double(max_length, maybe_null, name, decimals, TRUE);
if (field)
......
sql/sql_select.cc
View file @ a21cd97c
......@@ -9466,47 +9466,8 @@ static Field *create_tmp_field_from_item(THD *thd, Item *item, TABLE *table,
new_field->set_derivation(item->collation.derivation);
break;
case DECIMAL_RESULT:
{
uint8 dec= item->decimals;
uint8 intg= ((Item_decimal *) item)->decimal_precision() - dec;
uint32 len= item->max_length;
/*
Trying to put too many digits overall in a DECIMAL(prec,dec)
will always throw a warning. We must limit dec to
DECIMAL_MAX_SCALE however to prevent an assert() later.
*/
if (dec > 0)
{
signed int overflow;
dec= min(dec, DECIMAL_MAX_SCALE);
/*
If the value still overflows the field with the corrected dec,
we'll throw out decimals rather than integers. This is still
bad and of course throws a truncation warning.
+1: for decimal point
*/
const int required_length=
my_decimal_precision_to_length(intg + dec, dec,
item->unsigned_flag);
overflow= required_length - len;
if (overflow > 0)
dec= max(0, dec - overflow); // too long, discard fract
else
/* Corrected value fits. */
len= required_length;
}
new_field= new Field_new_decimal(len, maybe_null, item->name,
dec, item->unsigned_flag);
new_field= Field_new_decimal::create_from_item(item);
break;
}
case ROW_RESULT:
default:
// This case should never be choosen
......
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