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BUG#14056 Column prefix index on UTF-8 primary key column causes 'Can't find record..'

Browse Source 
Applying InnoDB patch from Jan Lindstrom
This commit is contained in:
elliot@mysql.com
2005-10-19 12:06:29 -04:00
parent 5db97a8d9a
commit 0955163bb1
6 changed files with 327 additions and 7 deletions
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9
innobase/include/rem0rec.h
View File

@@ -312,6 +312,15 @@ rec_offs_nth_extern(
const ulint* offsets,/* in: array returned by rec_get_offsets() */ const ulint* offsets,/* in: array returned by rec_get_offsets() */
ulint n); /* in: nth field */ ulint n); /* in: nth field */
/********************************************************** /**********************************************************
Returns nonzero if the SQL NULL bit is set in nth field of rec. */
UNIV_INLINE
ulint
rec_offs_nth_sql_null(
/*==================*/
/* out: nonzero if SQL NULL */
const ulint* offsets,/* in: array returned by rec_get_offsets() */
ulint n); /* in: nth field */
/**********************************************************
Gets the physical size of a field. */ Gets the physical size of a field. */
UNIV_INLINE UNIV_INLINE
ulint ulint

16
innobase/include/rem0rec.ic
View File

@@ -954,6 +954,22 @@ rec_offs_nth_extern(
& REC_OFFS_EXTERNAL)); & REC_OFFS_EXTERNAL));
} }
/**********************************************************
Returns nonzero if the SQL NULL bit is set in nth field of rec. */
UNIV_INLINE
ulint
rec_offs_nth_sql_null(
/*==================*/
/* out: nonzero if SQL NULL */
const ulint* offsets,/* in: array returned by rec_get_offsets() */
ulint n) /* in: nth field */
{
ut_ad(rec_offs_validate(NULL, NULL, offsets));
ut_ad(n < rec_offs_n_fields(offsets));
return(UNIV_UNLIKELY(rec_offs_base(offsets)[1 + n]
& REC_OFFS_SQL_NULL));
}
/********************************************************** /**********************************************************
Gets the physical size of a field. */ Gets the physical size of a field. */
UNIV_INLINE UNIV_INLINE

12
innobase/row/row0upd.c
View File

@@ -395,6 +395,18 @@ row_upd_changes_field_size_or_external(
old_len = rec_offs_nth_size(offsets, upd_field->field_no); old_len = rec_offs_nth_size(offsets, upd_field->field_no);
if (rec_offs_comp(offsets)
&& rec_offs_nth_sql_null(offsets, upd_field->field_no)) {
/* Note that in the compact table format, for a
variable length field, an SQL NULL will use zero
bytes in the offset array at the start of the physical
record, but a zero-length value (empty string) will
use one byte! Thus, we cannot use update-in-place
if we update an SQL NULL varchar to an empty string! */
old_len = UNIV_SQL_NULL;
}
if (old_len != new_len) { if (old_len != new_len) {
return(TRUE); return(TRUE);

109
mysql-test/r/innodb.result
View File

@@ -2663,3 +2663,112 @@ rollback;
rollback; rollback;
drop table t1; drop table t1;
drop function f1; drop function f1;
create table t1 (
a int, b char(10), c char(10), filler char(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b char(10), c char(10), filler char(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b varchar(10), c varchar(10), filler varchar(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b varchar(10), c varchar(10), filler varchar(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b text(10), c text(10), filler text(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b text(10), c text(10), filler text(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b blob(10), c blob(10), filler blob(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b blob(10), c blob(10), filler blob(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
commit;

116
mysql-test/t/innodb.test
View File

@@ -1635,3 +1635,119 @@ drop function f1;
disconnect a; disconnect a;
disconnect b; disconnect b;
#
# BUG 14056 Column prefix index on UTF-8 primary key column causes: Can't find record..
#
create table t1 (
a int, b char(10), c char(10), filler char(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b char(10), c char(10), filler char(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b varchar(10), c varchar(10), filler varchar(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b varchar(10), c varchar(10), filler varchar(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b text(10), c text(10), filler text(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b text(10), c text(10), filler text(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xe880bde880bd,_utf8 0xe880bde880bd,'six');
insert into t1 values (4,_utf8 0xe880bdD0B1e880bd,_utf8 0xe880bdD0B1e880bd,'seven');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05630563,_ucs2 0x05630563,'eleven');
insert into t2 values (4,_ucs2 0x0563001fc0563,_ucs2 0x0563001fc0563,'point');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
create table t1 (
a int, b blob(10), c blob(10), filler blob(10), primary key(a, b(2)), unique key (a, c(2))
) character set utf8 engine = innodb;
create table t2 (
a int, b blob(10), c blob(10), filler blob(10), primary key(a, b(2)), unique key (a, c(2))
) character set ucs2 engine = innodb;
insert into t1 values (1,'abcdefg','abcdefg','one');
insert into t1 values (2,'ijkilmn','ijkilmn','two');
insert into t1 values (3,'qrstuvw','qrstuvw','three');
insert into t1 values (4,_utf8 0xe880bd,_utf8 0xe880bd,'four');
insert into t1 values (4,_utf8 0x5b,_utf8 0x5b,'five');
insert into t1 values (4,_utf8 0xD0B1,_utf8 0xD0B1,'eight');
insert into t2 values (1,'abcdefg','abcdefg','one');
insert into t2 values (2,'ijkilmn','ijkilmn','two');
insert into t2 values (3,'qrstuvw','qrstuvw','three');
insert into t2 values (4,_ucs2 0x00e400,_ucs2 0x00e400,'four');
insert into t2 values (4,_ucs2 0x00640065,_ucs2 0x00640065,'five');
insert into t2 values (4,_ucs2 0x00e400e50068,_ucs2 0x00e400e50068,'six');
insert into t2 values (4,_ucs2 0x01fc,_ucs2 0x01fc,'seven');
insert into t2 values (4,_ucs2 0x0120,_ucs2 0x0120,'eight');
insert into t2 values (4,_ucs2 0x0563,_ucs2 0x0563,'ten');
insert into t2 values (4,_ucs2 0x05612020,_ucs2 0x05612020,'taken');
drop table t1;
drop table t2;
commit;

72
sql/ha_innodb.cc
View File

@@ -2872,6 +2872,9 @@ ha_innobase::store_key_val_for_row(
ulint lenlen; ulint lenlen;
ulint len; ulint len;
byte* data; byte* data;
ulint key_len;
CHARSET_INFO* cs;
int error=0;
if (is_null) { if (is_null) {
buff += key_part->length + 2; buff += key_part->length + 2;
@@ -2890,8 +2893,20 @@ ha_innobase::store_key_val_for_row(
/* In a column prefix index, we may need to truncate /* In a column prefix index, we may need to truncate
the stored value: */ the stored value: */
if (len > key_part->length) { cs = key_part->field->charset();
len = key_part->length;
if (cs->mbmaxlen > 1 && key_part->length > 0) {
key_len = (ulint) cs->cset->well_formed_len(cs,
(const char *) data,
(const char *) data + key_part->length,
key_part->length / cs->mbmaxlen,
&error);
} else {
key_len = key_part->length;
}
if (len > key_len) {
len = key_len;
} }
/* The length in a key value is always stored in 2 /* The length in a key value is always stored in 2
@@ -2915,6 +2930,11 @@ ha_innobase::store_key_val_for_row(
|| mysql_type == FIELD_TYPE_BLOB || mysql_type == FIELD_TYPE_BLOB
|| mysql_type == FIELD_TYPE_LONG_BLOB) { || mysql_type == FIELD_TYPE_LONG_BLOB) {
CHARSET_INFO* cs;
ulint key_len;
ulint len;
int error=0;
ut_a(key_part->key_part_flag & HA_PART_KEY_SEG); ut_a(key_part->key_part_flag & HA_PART_KEY_SEG);
if (is_null) { if (is_null) {
@@ -2935,8 +2955,21 @@ ha_innobase::store_key_val_for_row(
indexes, and we may need to truncate the data to be indexes, and we may need to truncate the data to be
stored in the key value: */ stored in the key value: */
if (blob_len > key_part->length) { cs = key_part->field->charset();
blob_len = key_part->length;
if (cs->mbmaxlen > 1 && key_part->length > 0) {
key_len = (ulint) cs->cset->well_formed_len(cs,
(const char *) blob_data,
(const char *) blob_data
+ key_part->length,
key_part->length / cs->mbmaxlen,
&error);
} else {
key_len = key_part->length;
}
if (blob_len > key_len) {
blob_len = key_len;
} }
/* MySQL reserves 2 bytes for the length and the /* MySQL reserves 2 bytes for the length and the
@@ -2958,15 +2991,40 @@ ha_innobase::store_key_val_for_row(
value we store may be also in a column prefix value we store may be also in a column prefix
index. */ index. */
CHARSET_INFO* cs;
ulint len;
const mysql_byte* src_start;
int error=0;
if (is_null) { if (is_null) {
buff += key_part->length; buff += key_part->length;
continue; continue;
} }
memcpy(buff, record + key_part->offset, cs = key_part->field->charset();
key_part->length); src_start = record + key_part->offset;
buff += key_part->length;
if (key_part->length > 0 && cs->mbmaxlen > 1) {
len = (ulint) cs->cset->well_formed_len(cs,
src_start,
src_start + key_part->length,
key_part->length / cs->mbmaxlen,
&error);
} else {
len = key_part->length;
}
memcpy(buff, src_start, len);
buff+=len;
/* Pad the unused space with spaces */
if (len < key_part->length) {
len = key_part->length - len;
memset(buff, ' ', len);
buff+=len;
}
} }
} }