database/mariadb
1
0
Fork 0
mirror of https://github.com/MariaDB/server.git synced 2026-01-06 05:22:24 +03:00
Code Activity

MDEV-12291 Allow ROW variables as SELECT INTO targets

Browse Source
This commit is contained in:
Alexander Barkov
2017-03-18 17:39:17 +04:00
parent 9dfe7bf86d
commit e0451941cc
14 changed files with 762 additions and 21 deletions
Download Patch File Download Diff File Expand all files Collapse all files

19
sql/sql_class.h
View File

@@ -5509,21 +5509,25 @@ public:
my_var(const LEX_STRING& j, enum type s) : name(j), scope(s) { }
virtual ~my_var() {}
virtual bool set(THD *thd, Item *val) = 0;
virtual class my_var_sp *get_my_var_sp() { return NULL; }
};
class my_var_sp: public my_var {
const Type_handler *m_type_handler;
public:
uint offset;
enum_field_types type;
/*
Routine to which this Item_splocal belongs. Used for checking if correct
runtime context is used for variable handling.
*/
sp_head *sp;
my_var_sp(const LEX_STRING& j, uint o, enum_field_types t, sp_head *s)
: my_var(j, LOCAL_VAR), offset(o), type(t), sp(s) { }
my_var_sp(const LEX_STRING& j, uint o, const Type_handler *type_handler,
sp_head *s)
: my_var(j, LOCAL_VAR), m_type_handler(type_handler), offset(o), sp(s) { }
~my_var_sp() { }
bool set(THD *thd, Item *val);
my_var_sp *get_my_var_sp() { return this; }
const Type_handler *type_handler() const { return m_type_handler; }
};
/*
@@ -5536,7 +5540,7 @@ class my_var_sp_row_field: public my_var_sp
public:
my_var_sp_row_field(const LEX_STRING &varname, const LEX_STRING &fieldname,
uint var_idx, uint field_idx, sp_head *s)
:my_var_sp(varname, var_idx, MYSQL_TYPE_DOUBLE/*Not really used*/, s),
:my_var_sp(varname, var_idx, &type_handler_double/*Not really used*/, s),
m_field_offset(field_idx)
{ }
bool set(THD *thd, Item *val);
@@ -5552,10 +5556,13 @@ public:
class select_dumpvar :public select_result_interceptor {
ha_rows row_count;
my_var_sp *m_var_sp_row; // Not NULL if SELECT INTO row_type_sp_variable
bool send_data_to_var_list(List<Item> &items);
public:
List<my_var> var_list;
select_dumpvar(THD *thd_arg): select_result_interceptor(thd_arg)
{ var_list.empty(); row_count= 0; }
select_dumpvar(THD *thd_arg)
:select_result_interceptor(thd_arg), row_count(0), m_var_sp_row(NULL)
{ var_list.empty(); }
~select_dumpvar() {}
int prepare(List<Item> &list, SELECT_LEX_UNIT *u);
int send_data(List<Item> &items);