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Commit a0cb7551 authored by Varun's avatar Varun
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MDEV-18880: Optimizer trace prints date in hexadecimal 

Introduced a print_key_value function to makes sure that the trace prints data in readable format
for readable characters and the rest of the characters are printed as hexadecimal.
parent 40ff8019
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Inline Side-by-side
Showing with 501 additions and 31 deletions
mysql-test/main/opt_trace.result
View file @ a0cb7551
......@@ -1446,7 +1446,7 @@ EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id {
{
"index": "id",
"covering": true,
"ranges": ["(0x24a20f) <= (a)"],
"ranges": ["(2001-01-04) <= (a)"],
"rows": 9,
"cost": 2.35
}
......@@ -1462,7 +1462,7 @@ EXPLAIN SELECT id,MIN(a),MAX(a) FROM t1 WHERE a>=20010104e0 GROUP BY id {
"rows": 9,
"cost": 2.35,
"key_parts_used_for_access": ["id"],
"ranges": ["(0x24a20f) <= (a)"],
"ranges": ["(2001-01-04) <= (a)"],
"chosen": false,
"cause": "cost"
},
......@@ -1624,7 +1624,7 @@ EXPLAIN SELECT * FROM t1 WHERE a = 20010104e0 GROUP BY id {
{
"index": "id",
"covering": true,
"ranges": ["(0x24a20f) <= (a) <= (0x24a20f)"],
"ranges": ["(2001-01-04) <= (a) <= (2001-01-04)"],
"rows": 9,
"cost": 2.35
}
......@@ -1640,7 +1640,7 @@ EXPLAIN SELECT * FROM t1 WHERE a = 20010104e0 GROUP BY id {
"rows": 9,
"cost": 2.35,
"key_parts_used_for_access": ["id", "a"],
"ranges": ["(0x24a20f) <= (a) <= (0x24a20f)"],
"ranges": ["(2001-01-04) <= (a) <= (2001-01-04)"],
"chosen": false,
"cause": "cost"
},
......@@ -6130,7 +6130,7 @@ JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
"index": "start_date",
"ranges":
[
"(0x4ac60f,NULL) < (start_date,end_date)"
"(2019-02-10,NULL) < (start_date,end_date)"
],
"rowid_ordered": false,
"using_mrr": false,
......@@ -6214,7 +6214,7 @@ JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
"index": "i_b",
"ranges":
[
"(0xd95b94336a9946a39cf5b58cfe772d8c) <= (b) <= (0xd95b94336a9946a39cf5b58cfe772d8c)"
"(\xD9[\x943j\x99F\xA3\x9C\xF5\xB5\x8C\xFEw-\x8C) <= (b) <= (\xD9[\x943j\x99F\xA3\x9C\xF5\xB5\x8C\xFEw-\x8C)"
],
"rowid_ordered": true,
"using_mrr": false,
......@@ -6268,4 +6268,290 @@ JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
}
]
drop table t1;
#
# MDEV-18880: Optimizer trace prints date in hexadecimal
#
CREATE TABLE t1(i INT PRIMARY KEY, b VARCHAR(10) CHARSET BINARY , INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 13 const 1 Using index condition
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\x0A) <= (b) <= (ab\x0A)"
],
"rowid_ordered": true,
"using_mrr": false,
"index_only": false,
"rows": 1,
"cost": 2.3787,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
ALTER TABLE t1 modify column b BINARY(10) AFTER i;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 11 const 1 Using index condition
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\x0A\x00\x00\x00\x00\x00\x00\x00) <= (b) <= (ab\x0A\x00\x00\x00\x00\x00\x00\x00)"
],
"rowid_ordered": true,
"using_mrr": false,
"index_only": false,
"rows": 1,
"cost": 2.3785,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
ALTER TABLE t1 modify column b VARBINARY(10) AFTER i;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 13 const 1 Using index condition
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\x0A) <= (b) <= (ab\x0A)"
],
"rowid_ordered": true,
"using_mrr": false,
"index_only": false,
"rows": 1,
"cost": 2.3787,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b CHAR(10), INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 11 const 1 Using index condition
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\n) <= (b) <= (ab\n)"
],
"rowid_ordered": true,
"using_mrr": false,
"index_only": false,
"rows": 1,
"cost": 2.3785,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b blob , INDEX i_b(b));
Warnings:
Note 1071 Specified key was too long; max key length is 1000 bytes
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b= 'ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 1003 const 1 Using where
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\x0A) <= (b) <= (ab\x0A)"
],
"rowid_ordered": false,
"using_mrr": false,
"index_only": false,
"rows": 1,
"cost": 3.5719,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b VARCHAR(10), INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, 'ab\n');
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
id select_type table type possible_keys key key_len ref rows Extra
1 SIMPLE t1 ref i_b i_b 13 const 2 Using index condition
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "i_b",
"ranges":
[
"(ab\n) <= (b) <= (ab\n)"
],
"rowid_ordered": true,
"using_mrr": false,
"index_only": false,
"rows": 2,
"cost": 3.6324,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1;
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k (a int);
insert into one_k select A.a + B.a*10 + C.a*100 from t0 A, t0 B, t0 C;
create table t1 (start_date date, end_date date, filler char(100), key(start_date, end_date)) ;
insert into t1 select date_add(now(), interval a day), date_add(now(), interval (a+7) day), 'data' from one_k;
explain format=json select * from t1 force index(start_date) where start_date >= '2019-02-10' and end_date <'2019-04-01';
EXPLAIN
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t1",
"access_type": "range",
"possible_keys": ["start_date"],
"key": "start_date",
"key_length": "8",
"used_key_parts": ["start_date", "end_date"],
"rows": 1000,
"filtered": 100,
"index_condition": "t1.start_date >= '2019-02-10' and t1.end_date < '2019-04-01'"
}
}
}
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "start_date",
"ranges":
[
"(2019-02-10,NULL) < (start_date,end_date)"
],
"rowid_ordered": false,
"using_mrr": false,
"index_only": false,
"rows": 1000,
"cost": 1282.2,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1, t0, one_k;
set optimizer_trace='enabled=off';
mysql-test/main/opt_trace.test
View file @ a0cb7551
......@@ -444,4 +444,58 @@ select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) fr
drop table t1;
--echo #
--echo # MDEV-18880: Optimizer trace prints date in hexadecimal
--echo #
CREATE TABLE t1(i INT PRIMARY KEY, b VARCHAR(10) CHARSET BINARY , INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
ALTER TABLE t1 modify column b BINARY(10) AFTER i;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
ALTER TABLE t1 modify column b VARBINARY(10) AFTER i;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b CHAR(10), INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b blob , INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, NULL);
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b= 'ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;
CREATE TABLE t1(i INT PRIMARY KEY, b VARCHAR(10), INDEX i_b(b));
INSERT INTO t1 VALUES (1, 'ab\n');
INSERT INTO t1 VALUES (2, 'ab\n');
set optimizer_trace=1;
EXPLAIN SELECT * FROM t1 WHERE b='ab\n';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;
create table t0(a int);
insert into t0 values (0),(1),(2),(3),(4),(5),(6),(7),(8),(9);
create table one_k (a int);
insert into one_k select A.a + B.a*10 + C.a*100 from t0 A, t0 B, t0 C;
create table t1 (start_date date, end_date date, filler char(100), key(start_date, end_date)) ;
--disable_warnings
insert into t1 select date_add(now(), interval a day), date_add(now(), interval (a+7) day), 'data' from one_k;
--enable_warnings
explain format=json select * from t1 force index(start_date) where start_date >= '2019-02-10' and end_date <'2019-04-01';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1, t0, one_k;
set optimizer_trace='enabled=off';
mysql-test/main/opt_trace_ucs2.result 0 → 100644
View file @ a0cb7551
create or replace table t1 (col1 char(10) character set ucs2, filler char(100), key(col1)) ;
insert into t1 values ('a', 'a');
insert into t1 values ('a', 'a');
set optimizer_trace=1;
explain format=json select * from t1 force index(col1) where col1 >='a';
EXPLAIN
{
"query_block": {
"select_id": 1,
"table": {
"table_name": "t1",
"access_type": "range",
"possible_keys": ["col1"],
"key": "col1",
"key_length": "21",
"used_key_parts": ["col1"],
"rows": 2,
"filtered": 100,
"index_condition": "t1.col1 >= 'a'"
}
}
}
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives'))
[
{
"range_scan_alternatives":
[
{
"index": "col1",
"ranges":
[
"(a) <= (col1)"
],
"rowid_ordered": false,
"using_mrr": false,
"index_only": false,
"rows": 2,
"cost": 3.7609,
"chosen": true
}
],
"analyzing_roworder_intersect":
{
"cause": "too few roworder scans"
},
"analyzing_index_merge_union":
[
]
}
]
drop table t1;
mysql-test/main/opt_trace_ucs2.test 0 → 100644
View file @ a0cb7551
--source include/not_embedded.inc
--source include/have_ucs2.inc
create or replace table t1 (col1 char(10) character set ucs2, filler char(100), key(col1)) ;
insert into t1 values ('a', 'a');
insert into t1 values ('a', 'a');
set optimizer_trace=1;
explain format=json select * from t1 force index(col1) where col1 >='a';
select JSON_DETAILED(JSON_EXTRACT(trace, '$**.analyzing_range_alternatives')) from INFORMATION_SCHEMA.OPTIMIZER_TRACE;
drop table t1;
sql/field.cc
View file @ a0cb7551
......@@ -11242,3 +11242,58 @@ bool Field::val_str_nopad(MEM_ROOT *mem_root, LEX_CSTRING *to)
thd->variables.sql_mode= sql_mode_backup;
return rc;
}
void Field::print_key_value(String *out, uint32 length)
{
if (charset() == &my_charset_bin)
print_key_value_binary(out, ptr, length);
else
val_str(out);
}
void Field_string::print_key_value(String *out, uint32 length)
{
if (charset() == &my_charset_bin)
{
size_t len= field_charset->cset->lengthsp(field_charset, (const char*) ptr, length);
print_key_value_binary(out, ptr, static_cast<uint32>(len));
}
else
{
THD *thd= get_thd();
sql_mode_t sql_mode_backup= thd->variables.sql_mode;
thd->variables.sql_mode&= ~MODE_PAD_CHAR_TO_FULL_LENGTH;
val_str(out,out);
thd->variables.sql_mode= sql_mode_backup;
}
}
void Field_varstring::print_key_value(String *out, uint32 length)
{
if (charset() == &my_charset_bin)
print_key_value_binary(out, get_data(), get_length());
else
val_str(out,out);
}
void Field_blob::print_key_value(String *out, uint32 length)
{
if (charset() == &my_charset_bin)
{
uchar *blob;
memcpy(&blob, ptr+packlength, sizeof(uchar*));
print_key_value_binary(out, blob, get_length());
}
else
val_str(out, out);
}
void Field::print_key_value_binary(String *out, const uchar* key, uint32 length)
{
out->append_semi_hex((const char*)key, length, charset());
}
\ No newline at end of file
sql/field.h
View file @ a0cb7551
......@@ -1383,6 +1383,8 @@ class Field: public Value_source
virtual int set_time() { return 1; }
bool set_warning(Sql_condition::enum_warning_level, unsigned int code,
int cuted_increment, ulong current_row=0) const;
virtual void print_key_value(String *out, uint32 length);
void print_key_value_binary(String *out, const uchar* key, uint32 length);
protected:
bool set_warning(unsigned int code, int cuted_increment) const
{
......@@ -3592,6 +3594,7 @@ class Field_string :public Field_longstr {
{ return charset() == &my_charset_bin ? FALSE : TRUE; }
Field *make_new_field(MEM_ROOT *root, TABLE *new_table, bool keep_type);
virtual uint get_key_image(uchar *buff,uint length, imagetype type);
void print_key_value(String *out, uint32 length);
private:
int save_field_metadata(uchar *first_byte);
};
......@@ -3697,6 +3700,7 @@ class Field_varstring :public Field_longstr {
uint is_equal(Create_field *new_field);
void hash(ulong *nr, ulong *nr2);
uint length_size() { return length_bytes; }
void print_key_value(String *out, uint32 length);
private:
int save_field_metadata(uchar *first_byte);
};
......@@ -4035,6 +4039,7 @@ class Field_blob :public Field_longstr {
uint32 char_length() const;
uint32 character_octet_length() const;
uint is_equal(Create_field *new_field);
void print_key_value(String *out, uint32 length);
friend void TABLE::remember_blob_values(String *blob_storage);
friend void TABLE::restore_blob_values(String *blob_storage);
......@@ -4159,6 +4164,10 @@ class Field_geom :public Field_blob {
geometry_type get_geometry_type() { return geom_type; };
static geometry_type geometry_type_merge(geometry_type, geometry_type);
uint get_srid() { return srid; }
void print_key_value(String *out, uint32 length)
{
out->append(STRING_WITH_LEN("unprintable_geometry_value"));
}
};
uint gis_field_options_image(uchar *buff, List<Create_field> &create_fields);
......@@ -4466,6 +4475,11 @@ class Field_bit :public Field {
{
return get_mm_leaf_int(param, key_part, cond, op, value, true);
}
void print_key_value(String *out, uint32 length)
{
val_int_as_str(out, 1);
}
private:
virtual size_t do_last_null_byte() const;
int save_field_metadata(uchar *first_byte);
......
sql/opt_range.cc
View file @ a0cb7551
......@@ -15835,12 +15835,10 @@ static void print_key_value(String *out, const KEY_PART_INFO *key_part,
{
// Byte 0 of a nullable key is the null-byte. If set, key is NULL.
if (field->real_maybe_null() && *key)
{
out->append(STRING_WITH_LEN("NULL"));
else
(field->type() == MYSQL_TYPE_GEOMETRY)
? out->append(STRING_WITH_LEN("unprintable_geometry_value"))
: out->append(STRING_WITH_LEN("unprintable_blob_value"));
goto next;
goto next;
}
}
if (field->real_maybe_null())
......@@ -15859,28 +15857,12 @@ static void print_key_value(String *out, const KEY_PART_INFO *key_part,
store_length--;
}
/*
Binary data cannot be converted to UTF8 which is what the
optimizer trace expects. If the column is binary, the hex
representation is printed to the trace instead.
*/
if (field->flags & BINARY_FLAG)
{
out->append("0x");
for (uint i = 0; i < store_length; i++)
{
out->append(_dig_vec_lower[*(key + i) >> 4]);
out->append(_dig_vec_lower[*(key + i) & 0x0F]);
}
goto next;
}
field->set_key_image(key, key_part->length);
if (field->type() == MYSQL_TYPE_BIT)
(void)field->val_int_as_str(&tmp, 1); // may change tmp's charset
field->print_key_value(&tmp, key_part->length);
if (field->charset() == &my_charset_bin)
out->append(tmp.ptr(), tmp.length(), tmp.charset());
else
field->val_str(&tmp); // may change tmp's charset
out->append(tmp.ptr(), tmp.length(), tmp.charset());
tmp.print(out, system_charset_info);
next:
if (key + store_length < key_end)
......
sql/sql_string.cc
View file @ a0cb7551
......@@ -1196,3 +1196,15 @@ uint convert_to_printable(char *to, size_t to_len,
*t= '\0';
return (uint) (t - to);
}
bool String::append_semi_hex(const char *s, uint len, CHARSET_INFO *cs)
{
size_t dst_len= len * 4 + 1; //extra length for the '\0' character
if (reserve(dst_len))
return true;
uint nbytes= convert_to_printable(Ptr + str_length, dst_len, s, len, cs);
DBUG_ASSERT((ulonglong) str_length + nbytes < UINT_MAX32);
str_length+= nbytes;
return false;
}
sql/sql_string.h
View file @ a0cb7551
......@@ -674,6 +674,7 @@ class Binary_string: public Static_binary_string
int reserve(size_t space_needed)
{
DBUG_ASSERT((ulonglong) str_length + space_needed < UINT_MAX32);
return realloc(str_length + space_needed);
}
int reserve(size_t space_needed, size_t grow_by);
......@@ -959,6 +960,8 @@ class String: public Charset, public Binary_string
{
return !sortcmp(this, other, cs);
}
private:
bool append_semi_hex(const char *s, uint len, CHARSET_INFO *cs);
};
......
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