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Commit 89f031b3 authored by unknown's avatar unknown
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Merge dellis@bk-internal.mysql.com:/home/bk/mysql-4.1 

into mysql.com:/home/dellis/bkl/bug-4.1
parents d8b01136 96f9c9d9
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Showing with 343 additions and 69 deletions
include/config-win.h
View file @ 89f031b3
......@@ -31,18 +31,25 @@ functions */
#define HAVE_SMEM 1
#if defined(__NT__)
#define SYSTEM_TYPE "NT"
#elif defined(__WIN2000__)
#define SYSTEM_TYPE "WIN2000"
#if defined(_WIN64) || defined(WIN64)
#define SYSTEM_TYPE "Win64"
#elif defined(_WIN32) || defined(WIN32)
#define SYSTEM_TYPE "Win32"
#else
#define SYSTEM_TYPE "Win95/Win98"
#define SYSTEM_TYPE "Windows"
#endif
#if defined(_WIN64) || defined(WIN64)
#define MACHINE_TYPE "ia64" /* Define to machine type name */
#if defined(_M_IA64)
#define MACHINE_TYPE "ia64"
#elif defined(_M_IX86)
#define MACHINE_TYPE "ia32"
#elif defined(_M_ALPHA)
#define MACHINE_TYPE "axp"
#else
#define MACHINE_TYPE "i32" /* Define to machine type name */
#define MACHINE_TYPE "unknown" /* Define to machine type name */
#endif
#if !(defined(_WIN64) || defined(WIN64))
#ifndef _WIN32
#define _WIN32 /* Compatible with old source */
#endif
......
mysql-test/r/delete.result
View file @ 89f031b3
......@@ -163,3 +163,12 @@ select * from t1;
a b
7 7
drop table t1;
CREATE TABLE t1 ( a int PRIMARY KEY );
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
INSERT INTO t1 VALUES (0),(1),(2);
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
SELECT * FROM t1;
a
0
2
DROP TABLE t1;
mysql-test/r/ndb_index_ordered.result
View file @ 89f031b3
......@@ -445,6 +445,89 @@ select count(*)-9 from t1 use index (ts) where ts <= '2001-01-01 23:59:59';
count(*)-9
0
drop table t1;
create table t1 (
a int primary key,
s decimal(12),
t decimal(12, 5),
u decimal(12) unsigned,
v decimal(12, 5) unsigned,
key (s),
key (t),
key (u),
key (v)
) engine=ndb;
insert into t1 values
( 0, -000000000007, -0000061.00003, 000000000061, 0000965.00042),
( 1, -000000000007, -0000061.00042, 000000000061, 0000965.00003),
( 2, -071006035767, 4210253.00024, 000000000001, 0000001.84488),
( 3, 000000007115, 0000000.77607, 000077350625, 0000018.00013),
( 4, -000000068391, -0346486.00000, 000000005071, 0005334.00002),
( 5, -521579890459, -1936874.00001, 000000000154, 0000003.00018),
( 6, -521579890459, -1936874.00018, 000000000154, 0000003.00001),
( 7, 000000000333, 0000051.39140, 000000907958, 0788643.08374),
( 8, 000042731229, 0000009.00000, 000000000009, 6428667.00000),
( 9, -000008159769, 0000918.00004, 000096951421, 7607730.00008);
select count(*)- 5 from t1 use index (s) where s < -000000000007;
count(*)- 5
0
select count(*)- 7 from t1 use index (s) where s <= -000000000007;
count(*)- 7
0
select count(*)- 2 from t1 use index (s) where s = -000000000007;
count(*)- 2
0
select count(*)- 5 from t1 use index (s) where s >= -000000000007;
count(*)- 5
0
select count(*)- 3 from t1 use index (s) where s > -000000000007;
count(*)- 3
0
select count(*)- 4 from t1 use index (t) where t < -0000061.00003;
count(*)- 4
0
select count(*)- 5 from t1 use index (t) where t <= -0000061.00003;
count(*)- 5
0
select count(*)- 1 from t1 use index (t) where t = -0000061.00003;
count(*)- 1
0
select count(*)- 6 from t1 use index (t) where t >= -0000061.00003;
count(*)- 6
0
select count(*)- 5 from t1 use index (t) where t > -0000061.00003;
count(*)- 5
0
select count(*)- 2 from t1 use index (u) where u < 000000000061;
count(*)- 2
0
select count(*)- 4 from t1 use index (u) where u <= 000000000061;
count(*)- 4
0
select count(*)- 2 from t1 use index (u) where u = 000000000061;
count(*)- 2
0
select count(*)- 8 from t1 use index (u) where u >= 000000000061;
count(*)- 8
0
select count(*)- 6 from t1 use index (u) where u > 000000000061;
count(*)- 6
0
select count(*)- 5 from t1 use index (v) where v < 0000965.00042;
count(*)- 5
0
select count(*)- 6 from t1 use index (v) where v <= 0000965.00042;
count(*)- 6
0
select count(*)- 1 from t1 use index (v) where v = 0000965.00042;
count(*)- 1
0
select count(*)- 5 from t1 use index (v) where v >= 0000965.00042;
count(*)- 5
0
select count(*)- 4 from t1 use index (v) where v > 0000965.00042;
count(*)- 4
0
drop table t1;
create table t1(a int primary key, b int not null, index(b));
insert into t1 values (1,1), (2,2);
set autocommit=0;
......
mysql-test/t/delete.test
View file @ 89f031b3
......@@ -141,3 +141,14 @@ delete t1 from t1 where a = 3;
check table t1;
select * from t1;
drop table t1;
#
# Bug #8392: delete with ORDER BY containing a direct reference to the table
#
CREATE TABLE t1 ( a int PRIMARY KEY );
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
INSERT INTO t1 VALUES (0),(1),(2);
DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
SELECT * FROM t1;
DROP TABLE t1;
mysql-test/t/ndb_index_ordered.test
View file @ 89f031b3
......@@ -249,6 +249,58 @@ select count(*)-9 from t1 use index (ts) where ts <= '2001-01-01 23:59:59';
drop table t1;
# decimal (not the new 5.0 thing)
create table t1 (
a int primary key,
s decimal(12),
t decimal(12, 5),
u decimal(12) unsigned,
v decimal(12, 5) unsigned,
key (s),
key (t),
key (u),
key (v)
) engine=ndb;
#
insert into t1 values
( 0, -000000000007, -0000061.00003, 000000000061, 0000965.00042),
( 1, -000000000007, -0000061.00042, 000000000061, 0000965.00003),
( 2, -071006035767, 4210253.00024, 000000000001, 0000001.84488),
( 3, 000000007115, 0000000.77607, 000077350625, 0000018.00013),
( 4, -000000068391, -0346486.00000, 000000005071, 0005334.00002),
( 5, -521579890459, -1936874.00001, 000000000154, 0000003.00018),
( 6, -521579890459, -1936874.00018, 000000000154, 0000003.00001),
( 7, 000000000333, 0000051.39140, 000000907958, 0788643.08374),
( 8, 000042731229, 0000009.00000, 000000000009, 6428667.00000),
( 9, -000008159769, 0000918.00004, 000096951421, 7607730.00008);
#
select count(*)- 5 from t1 use index (s) where s < -000000000007;
select count(*)- 7 from t1 use index (s) where s <= -000000000007;
select count(*)- 2 from t1 use index (s) where s = -000000000007;
select count(*)- 5 from t1 use index (s) where s >= -000000000007;
select count(*)- 3 from t1 use index (s) where s > -000000000007;
#
select count(*)- 4 from t1 use index (t) where t < -0000061.00003;
select count(*)- 5 from t1 use index (t) where t <= -0000061.00003;
select count(*)- 1 from t1 use index (t) where t = -0000061.00003;
select count(*)- 6 from t1 use index (t) where t >= -0000061.00003;
select count(*)- 5 from t1 use index (t) where t > -0000061.00003;
#
select count(*)- 2 from t1 use index (u) where u < 000000000061;
select count(*)- 4 from t1 use index (u) where u <= 000000000061;
select count(*)- 2 from t1 use index (u) where u = 000000000061;
select count(*)- 8 from t1 use index (u) where u >= 000000000061;
select count(*)- 6 from t1 use index (u) where u > 000000000061;
#
select count(*)- 5 from t1 use index (v) where v < 0000965.00042;
select count(*)- 6 from t1 use index (v) where v <= 0000965.00042;
select count(*)- 1 from t1 use index (v) where v = 0000965.00042;
select count(*)- 5 from t1 use index (v) where v >= 0000965.00042;
select count(*)- 4 from t1 use index (v) where v > 0000965.00042;
drop table t1;
# bug#7798
create table t1(a int primary key, b int not null, index(b));
insert into t1 values (1,1), (2,2);
......
mysql-test/t/rpl_multi_query.test
View file @ 89f031b3
......@@ -3,6 +3,9 @@
# CLIENT_MULTI_STATEMENTS) will be binlogged ONE-query-per-event (not
# one binlog event containing all queries)
# PS doesn't support multi-statements
--disable_ps_protocol
source include/master-slave.inc;
--disable_warnings
drop database if exists mysqltest;
......
ndb/include/kernel/signaldata/DictTabInfo.hpp
View file @ 89f031b3
......@@ -302,7 +302,8 @@ public:
ExtBigunsigned = NdbSqlUtil::Type::Bigunsigned,
ExtFloat = NdbSqlUtil::Type::Float,
ExtDouble = NdbSqlUtil::Type::Double,
ExtDecimal = NdbSqlUtil::Type::Decimal,
ExtOlddecimal = NdbSqlUtil::Type::Olddecimal,
ExtOlddecimalunsigned = NdbSqlUtil::Type::Olddecimalunsigned,
ExtChar = NdbSqlUtil::Type::Char,
ExtVarchar = NdbSqlUtil::Type::Varchar,
ExtBinary = NdbSqlUtil::Type::Binary,
......@@ -411,9 +412,20 @@ public:
AttributeSize = DictTabInfo::a64Bit;
AttributeArraySize = AttributeExtLength;
return true;
case DictTabInfo::ExtDecimal:
// not yet implemented anywhere
break;
case DictTabInfo::ExtOlddecimal:
AttributeType = DictTabInfo::StringType;
AttributeSize = DictTabInfo::an8Bit;
AttributeArraySize =
(1 + AttributeExtPrecision + (int(AttributeExtScale) > 0)) *
AttributeExtLength;
return true;
case DictTabInfo::ExtOlddecimalunsigned:
AttributeType = DictTabInfo::StringType;
AttributeSize = DictTabInfo::an8Bit;
AttributeArraySize =
(0 + AttributeExtPrecision + (int(AttributeExtScale) > 0)) *
AttributeExtLength;
return true;
case DictTabInfo::ExtChar:
case DictTabInfo::ExtBinary:
AttributeType = DictTabInfo::StringType;
......
ndb/include/ndbapi/NdbDictionary.hpp
View file @ 89f031b3
......@@ -179,7 +179,7 @@ public:
Bigunsigned, ///< 64 Bit. 8 byte signed integer, can be used in array
Float, ///< 32-bit float. 4 bytes float, can be used in array
Double, ///< 64-bit float. 8 byte float, can be used in array
Decimal, ///< Precision, Scale are applicable
Olddecimal, ///< MySQL < 5.0 signed decimal, Precision, Scale
Char, ///< Len. A fixed array of 1-byte chars
Varchar, ///< Max len
Binary, ///< Len
......@@ -190,7 +190,8 @@ public:
Text, ///< Text blob
Time = 25, ///< Time without date
Year = 26, ///< Year 1901-2155 (1 byte)
Timestamp = 27 ///< Unix time
Timestamp = 27, ///< Unix time
Olddecimalunsigned = 28
};
/**
......@@ -276,25 +277,25 @@ public:
/**
* Set precision of column.
* @note Only applicable for builtin type Decimal
* @note Only applicable for decimal types
*/
void setPrecision(int);
/**
* Get precision of column.
* @note Only applicable for builtin type Decimal
* @note Only applicable for decimal types
*/
int getPrecision() const;
/**
* Set scale of column.
* @note Only applicable for builtin type Decimal
* @note Only applicable for decimal types
*/
void setScale(int);
/**
* Get scale of column.
* @note Only applicable for builtin type Decimal
* @note Only applicable for decimal types
*/
int getScale() const;
......
ndb/include/util/NdbSqlUtil.hpp
View file @ 89f031b3
......@@ -75,7 +75,7 @@ public:
Bigunsigned, // 64 Bit
Float, // 32-bit float
Double, // 64-bit float
Decimal, // Precision, Scale
Olddecimal, // Precision, Scale
Char, // Len
Varchar, // Max len
Binary, // Len
......@@ -86,7 +86,8 @@ public:
Text, // Text blob
Time = 25, // Time without date
Year = 26, // Year (size 1 byte)
Timestamp = 27 // Unix seconds (uint32)
Timestamp = 27, // Unix seconds (uint32)
Olddecimalunsigned = 28
};
Enum m_typeId;
Cmp* m_cmp; // comparison method
......@@ -109,6 +110,11 @@ public:
static bool usable_in_hash_index(Uint32 typeId, const void* cs);
static bool usable_in_ordered_index(Uint32 typeId, const void* cs);
/**
* Compare decimal numbers.
*/
static int cmp_olddecimal(const uchar* s1, const uchar* s2, unsigned n);
private:
/**
* List of all types. Must match Type::Enum.
......@@ -129,7 +135,7 @@ private:
static Cmp cmpBigunsigned;
static Cmp cmpFloat;
static Cmp cmpDouble;
static Cmp cmpDecimal;
static Cmp cmpOlddecimal;
static Cmp cmpChar;
static Cmp cmpVarchar;
static Cmp cmpBinary;
......@@ -141,6 +147,7 @@ private:
static Cmp cmpTime;
static Cmp cmpYear;
static Cmp cmpTimestamp;
static Cmp cmpOlddecimalunsigned;
};
#endif
ndb/src/common/util/NdbSqlUtil.cpp
View file @ 89f031b3
......@@ -76,117 +76,121 @@ NdbSqlUtil::char_like(const char* s1, unsigned n1,
const NdbSqlUtil::Type
NdbSqlUtil::m_typeList[] = {
{
{ // 0
Type::Undefined,
NULL
},
{
{ // 1
Type::Tinyint,
cmpTinyint
},
{
{ // 2
Type::Tinyunsigned,
cmpTinyunsigned
},
{
{ // 3
Type::Smallint,
cmpSmallint
},
{
{ // 4
Type::Smallunsigned,
cmpSmallunsigned
},
{
{ // 5
Type::Mediumint,
cmpMediumint
},
{
{ // 6
Type::Mediumunsigned,
cmpMediumunsigned
},
{
{ // 7
Type::Int,
cmpInt
},
{
{ // 8
Type::Unsigned,
cmpUnsigned
},
{
{ // 9
Type::Bigint,
cmpBigint
},
{
{ // 10
Type::Bigunsigned,
cmpBigunsigned
},
{
{ // 11
Type::Float,
cmpFloat
},
{
{ // 12
Type::Double,
cmpDouble
},
{
Type::Decimal,
NULL // cmpDecimal
{ // 13
Type::Olddecimal,
cmpOlddecimal
},
{
{ // 14
Type::Char,
cmpChar
},
{
{ // 15
Type::Varchar,
cmpVarchar
},
{
{ // 16
Type::Binary,
cmpBinary
},
{
{ // 17
Type::Varbinary,
cmpVarbinary
},
{
{ // 18
Type::Datetime,
cmpDatetime
},
{
{ // 19
Type::Date,
cmpDate
},
{
{ // 20
Type::Blob,
cmpBlob
},
{
{ // 21
Type::Text,
cmpText
},
{
{ // 22
Type::Undefined, // 5.0 Bit
NULL
},
{
{ // 23
Type::Undefined, // 5.0 Longvarchar
NULL
},
{
{ // 24
Type::Undefined, // 5.0 Longvarbinary
NULL
},
{
{ // 25
Type::Time,
cmpTime
},
{
{ // 26
Type::Year,
cmpYear
},
{
{ // 27
Type::Timestamp,
cmpTimestamp
},
{ // 28
Type::Olddecimalunsigned,
cmpOlddecimalunsigned
}
};
......@@ -411,14 +415,56 @@ NdbSqlUtil::cmpDouble(const void* info, const Uint32* p1, const Uint32* p2, Uint
}
int
NdbSqlUtil::cmpDecimal(const void* info, const Uint32* p1, const Uint32* p2, Uint32 full, Uint32 size)
NdbSqlUtil::cmp_olddecimal(const uchar* s1, const uchar* s2, unsigned n)
{
assert(full >= size && size > 0);
// not used by MySQL or NDB
assert(false);
int sgn = +1;
unsigned i = 0;
while (i < n) {
int c1 = s1[i];
int c2 = s2[i];
if (c1 == c2) {
if (c1 == '-')
sgn = -1;
} else if (c1 == '-') {
return -1;
} else if (c2 == '-') {
return +1;
} else if (c1 < c2) {
return -1 * sgn;
} else {
return +1 * sgn;
}
i++;
}
return 0;
}
int
NdbSqlUtil::cmpOlddecimal(const void* info, const Uint32* p1, const Uint32* p2, Uint32 full, Uint32 size)
{
assert(full >= size && size > 0);
if (full == size) {
union { const Uint32* p; const uchar* v; } u1, u2;
u1.p = p1;
u2.p = p2;
return cmp_olddecimal(u1.v, u2.v, full << 2);
}
return CmpUnknown;
}
int
NdbSqlUtil::cmpOlddecimalunsigned(const void* info, const Uint32* p1, const Uint32* p2, Uint32 full, Uint32 size)
{
assert(full >= size && size > 0);
if (full == size) {
union { const Uint32* p; const uchar* v; } u1, u2;
u1.p = p1;
u2.p = p2;
return cmp_olddecimal(u1.v, u2.v, full << 2);
}
return CmpUnknown;
}
int
NdbSqlUtil::cmpChar(const void* info, const Uint32* p1, const Uint32* p2, Uint32 full, Uint32 size)
{
......
ndb/src/ndbapi/NdbDictionary.cpp
View file @ 89f031b3
......@@ -918,8 +918,11 @@ operator<<(NdbOut& out, const NdbDictionary::Column& col)
case NdbDictionary::Column::Double:
out << "Double";
break;
case NdbDictionary::Column::Decimal:
out << "Decimal(" << col.getScale() << "," << col.getPrecision() << ")";
case NdbDictionary::Column::Olddecimal:
out << "Olddecimal(" << col.getPrecision() << "," << col.getScale() << ")";
break;
case NdbDictionary::Column::Olddecimalunsigned:
out << "Olddecimalunsigned(" << col.getPrecision() << "," << col.getScale() << ")";
break;
case NdbDictionary::Column::Char:
out << "Char(" << col.getLength() << ";" << csname << ")";
......
ndb/src/ndbapi/NdbDictionaryImpl.cpp
View file @ 89f031b3
......@@ -114,7 +114,8 @@ NdbColumnImpl::init(Type t)
m_length = 1;
m_cs = NULL;
break;
case Decimal:
case Olddecimal:
case Olddecimalunsigned:
m_precision = 10;
m_scale = 0;
m_length = 1;
......@@ -1176,7 +1177,8 @@ columnTypeMapping[] = {
{ DictTabInfo::ExtBigunsigned, NdbDictionary::Column::Bigunsigned },
{ DictTabInfo::ExtFloat, NdbDictionary::Column::Float },
{ DictTabInfo::ExtDouble, NdbDictionary::Column::Double },
{ DictTabInfo::ExtDecimal, NdbDictionary::Column::Decimal },
{ DictTabInfo::ExtOlddecimal, NdbDictionary::Column::Olddecimal },
{ DictTabInfo::ExtOlddecimalunsigned, NdbDictionary::Column::Olddecimalunsigned },
{ DictTabInfo::ExtChar, NdbDictionary::Column::Char },
{ DictTabInfo::ExtVarchar, NdbDictionary::Column::Varchar },
{ DictTabInfo::ExtBinary, NdbDictionary::Column::Binary },
......
ndb/src/ndbapi/NdbRecAttr.cpp
View file @ 89f031b3
......@@ -156,7 +156,8 @@ NdbOut& operator<<(NdbOut& out, const NdbRecAttr &r)
return out;
}
uint length = r.getColumn()->getLength();
const NdbDictionary::Column* c = r.getColumn();
uint length = c->getLength();
if (length > 1)
out << "[";
......@@ -208,6 +209,18 @@ NdbOut& operator<<(NdbOut& out, const NdbRecAttr &r)
case NdbDictionary::Column::Double:
out << r.double_value();
break;
case NdbDictionary::Column::Olddecimal:
{
short len = 1 + c->getPrecision() + (c->getScale() > 0);
out.print("%.*s", len, r.aRef());
}
break;
case NdbDictionary::Column::Olddecimalunsigned:
{
short len = 0 + c->getPrecision() + (c->getScale() > 0);
out.print("%.*s", len, r.aRef());
}
break;
// for dates cut-and-paste from field.cc
case NdbDictionary::Column::Datetime:
{
......
ndb/test/include/NdbSchemaOp.hpp
View file @ 89f031b3
......@@ -567,7 +567,8 @@ convertColumnTypeToAttrType(NdbDictionary::Column::Type _type)
case NdbDictionary::Column::Unsigned:
return UnSigned;
case NdbDictionary::Column::Float:
case NdbDictionary::Column::Decimal:
case NdbDictionary::Column::Olddecimal:
case NdbDictionary::Column::Olddecimalunsigned:
case NdbDictionary::Column::Double:
return Float;
case NdbDictionary::Column::Char:
......
ndb/tools/restore/consumer.cpp
View file @ 89f031b3
......@@ -44,9 +44,12 @@ BackupConsumer::create_table_string(const TableS & table,
case NdbDictionary::Column::Float:
pos += sprintf(buf+pos, "%s", "float");
break;
case NdbDictionary::Column::Decimal:
case NdbDictionary::Column::Olddecimal:
pos += sprintf(buf+pos, "%s", "decimal");
break;
case NdbDictionary::Column::Olddecimalunsigned:
pos += sprintf(buf+pos, "%s", "decimal unsigned");
break;
case NdbDictionary::Column::Char:
pos += sprintf(buf+pos, "%s", "char");
break;
......
sql/ha_ndbcluster.cc
View file @ 89f031b3
......@@ -2276,10 +2276,14 @@ void ha_ndbcluster::print_results()
fprintf(DBUG_FILE, "Double\t%f", value);
break;
}
case NdbDictionary::Column::Decimal: {
case NdbDictionary::Column::Olddecimal: {
char *value= field->ptr;
fprintf(DBUG_FILE, "Decimal\t'%-*s'", field->pack_length(), value);
fprintf(DBUG_FILE, "Olddecimal\t'%-*s'", field->pack_length(), value);
break;
}
case NdbDictionary::Column::Olddecimalunsigned: {
char *value= field->ptr;
fprintf(DBUG_FILE, "Olddecimalunsigned\t'%-*s'", field->pack_length(), value);
break;
}
case NdbDictionary::Column::Char:{
......@@ -3312,10 +3316,6 @@ static int create_ndb_column(NDBCOL &col,
const enum enum_field_types mysql_type= field->real_type();
switch (mysql_type) {
// Numeric types
case MYSQL_TYPE_DECIMAL:
col.setType(NDBCOL::Char);
col.setLength(field->pack_length());
break;
case MYSQL_TYPE_TINY:
if (field->flags & UNSIGNED_FLAG)
col.setType(NDBCOL::Tinyunsigned);
......@@ -3359,6 +3359,26 @@ static int create_ndb_column(NDBCOL &col,
col.setType(NDBCOL::Double);
col.setLength(1);
break;
case MYSQL_TYPE_DECIMAL:
{
Field_decimal *f= (Field_decimal*)field;
uint precision= f->pack_length();
uint scale= f->decimals();
if (field->flags & UNSIGNED_FLAG)
{
col.setType(NDBCOL::Olddecimalunsigned);
precision-= (scale > 0);
}
else
{
col.setType(NDBCOL::Olddecimal);
precision-= 1 + (scale > 0);
}
col.setPrecision(precision);
col.setScale(scale);
col.setLength(1);
}
break;
// Date types
case MYSQL_TYPE_DATETIME:
col.setType(NDBCOL::Datetime);
......
sql/sql_delete.cc
View file @ 89f031b3
......@@ -117,6 +117,7 @@ int mysql_delete(THD *thd, TABLE_LIST *table_list, COND *conds, SQL_LIST *order,
bzero((char*) &tables,sizeof(tables));
tables.table = table;
tables.alias = table_list->alias;
table->sort.io_cache = (IO_CACHE *) my_malloc(sizeof(IO_CACHE),
MYF(MY_FAE | MY_ZEROFILL));
......
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