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Merge ../10.1-explain-json-r4 into 10.1

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This commit is contained in:
Sergei Petrunia
2014-11-27 00:51:54 +03:00
parent 55e99b2933 3c5ce8a0a3
commit 3d5f97fd70
21 changed files with 1335 additions and 155 deletions
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79
sql/sql_explain.h
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@@ -14,6 +14,15 @@
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
class String_list: public List<char>
{
public:
bool append_str(MEM_ROOT *mem_root, const char *str);
};
/* Data structures for ANALYZE */
class Table_access_tracker
{
@@ -67,6 +76,7 @@ const int FAKE_SELECT_LEX_ID= (int)UINT_MAX;
class Explain_query;
class Json_writer;
/*
A node can be either a SELECT, or a UNION.
*/
@@ -97,7 +107,9 @@ public:
virtual int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze)=0;
virtual void print_explain_json(Explain_query *query, Json_writer *writer,
bool is_analyze)= 0;
int print_explain_for_children(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
virtual ~Explain_node(){}
@@ -177,6 +189,8 @@ public:
int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
void print_explain_json(Explain_query *query, Json_writer *writer,
bool is_analyze);
Table_access_tracker *get_using_temporary_read_tracker()
{
@@ -222,6 +236,8 @@ public:
}
int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
void print_explain_json(Explain_query *query, Json_writer *writer,
bool is_analyze);
const char *fake_select_type;
bool using_filesort;
@@ -236,6 +252,8 @@ public:
return &tmptable_read_tracker;
}
private:
uint make_union_table_name(char *buf);
Table_access_tracker fake_select_lex_tracker;
/* This one is for reading after ORDER BY */
Table_access_tracker tmptable_read_tracker;
@@ -311,6 +329,8 @@ public:
/* Return tabular EXPLAIN output as a text string */
bool print_explain_str(THD *thd, String *out_str, bool is_analyze);
void print_explain_json(select_result_sink *output, bool is_analyze);
/* If true, at least part of EXPLAIN can be printed */
bool have_query_plan() { return insert_plan || upd_del_plan|| get_node(1) != NULL; }
@@ -407,21 +427,16 @@ class Explain_index_use : public Sql_alloc
{
char *key_name;
uint key_len;
/* will add #keyparts here if we implement EXPLAIN FORMAT=JSON */
public:
void set(MEM_ROOT *root, const char *key_name_arg, uint key_len_arg)
String_list key_parts_list;
void clear()
{
if (key_name_arg)
{
size_t name_len= strlen(key_name_arg);
if ((key_name= (char*)alloc_root(root, name_len+1)))
memcpy(key_name, key_name_arg, name_len+1);
}
else
key_name= NULL;
key_len= key_len_arg;
key_name= NULL;
key_len= (uint)-1;
}
void set(MEM_ROOT *root, KEY *key_name, uint key_len_arg);
void set_pseudo_key(MEM_ROOT *root, const char *key_name);
inline const char *get_key_name() { return key_name; }
inline uint get_key_len() { return key_len; }
@@ -438,6 +453,13 @@ public:
{}
const int quick_type;
bool is_basic()
{
return (quick_type == QUICK_SELECT_I::QS_TYPE_RANGE ||
quick_type == QUICK_SELECT_I::QS_TYPE_RANGE_DESC ||
quick_type == QUICK_SELECT_I::QS_TYPE_GROUP_MIN_MAX);
}
/* This is used when quick_type == QUICK_SELECT_I::QS_TYPE_RANGE */
Explain_index_use range;
@@ -448,8 +470,11 @@ public:
void print_extra(String *str);
void print_key(String *str);
void print_key_len(String *str);
private:
void print_json(Json_writer *writer);
void print_extra_recursive(String *str);
private:
const char *get_name_by_type();
};
@@ -479,8 +504,8 @@ public:
StringBuffer<32> used_partitions;
bool used_partitions_set;
/* Empty string means "NULL" will be printed */
StringBuffer<32> possible_keys_str;
/* Empty means "NULL" will be printed */
String_list possible_keys;
/*
Index use: key name and length.
@@ -498,8 +523,7 @@ public:
*/
Explain_index_use hash_next_key;
bool ref_set; /* not set means 'NULL' should be printed */
StringBuffer<32> ref;
String_list ref_list;
bool rows_set; /* not set means 'NULL' should be printed */
ha_rows rows;
@@ -529,11 +553,19 @@ public:
EXPLAIN_BKA_TYPE bka_type;
StringBuffer<32> firstmatch_table_name;
/*
Note: lifespan of WHERE condition is less than lifespan of this object.
THe below is valid if tags include "ET_USING_WHERE".
*/
Item *where_cond;
Item *pushed_index_cond;
int print_explain(select_result_sink *output, uint8 explain_flags,
bool is_analyze,
uint select_id, const char *select_type,
bool using_temporary, bool using_filesort);
void print_explain_json(Json_writer *writer, bool is_analyze);
/* ANALYZE members*/
Table_access_tracker tracker;
@@ -541,6 +573,10 @@ public:
private:
void append_tag_name(String *str, enum explain_extra_tag tag);
void fill_key_str(String *key_str, bool is_json);
void fill_key_len_str(String *key_len_str);
double get_r_filtered();
void tag_to_json(Json_writer *writer, enum explain_extra_tag tag);
};
@@ -585,6 +621,8 @@ public:
virtual int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
virtual void print_explain_json(Explain_query *query, Json_writer *writer, bool is_analyze)
{ /* EXPLAIN_JSON_NOT_IMPL */}
};
@@ -605,6 +643,9 @@ public:
int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
void print_explain_json(Explain_query *query, Json_writer *writer,
bool is_analyze)
{ /* EXPLAIN_JSON_NOT_IMPL */}
};
@@ -626,6 +667,8 @@ public:
virtual int print_explain(Explain_query *query, select_result_sink *output,
uint8 explain_flags, bool is_analyze);
virtual void print_explain_json(Explain_query *query, Json_writer *writer, bool is_analyze)
{ /* EXPLAIN_JSON_NOT_IMPL */}
};