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Merge with 4.0.4

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monty@mashka.mysql.fi
2002-10-02 17:55:12 +03:00
parent 7377f54631 4d705988d5
commit 0f39457613
370 changed files with 74781 additions and 5578 deletions
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222
sql/sql_lex.h
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@@ -46,10 +46,12 @@ enum enum_sql_command {
SQLCOM_SHOW_KEYS, SQLCOM_SHOW_VARIABLES, SQLCOM_SHOW_LOGS, SQLCOM_SHOW_STATUS,
SQLCOM_SHOW_INNODB_STATUS,
SQLCOM_SHOW_PROCESSLIST, SQLCOM_SHOW_MASTER_STAT, SQLCOM_SHOW_SLAVE_STAT,
SQLCOM_SHOW_GRANTS, SQLCOM_SHOW_CREATE,
SQLCOM_SHOW_GRANTS, SQLCOM_SHOW_CREATE, SQLCOM_SHOW_CHARSETS,
SQLCOM_SHOW_CREATE_DB,
SQLCOM_LOAD,SQLCOM_SET_OPTION,SQLCOM_LOCK_TABLES,SQLCOM_UNLOCK_TABLES,
SQLCOM_GRANT, SQLCOM_CHANGE_DB, SQLCOM_CREATE_DB, SQLCOM_DROP_DB,
SQLCOM_GRANT,
SQLCOM_CHANGE_DB, SQLCOM_CREATE_DB, SQLCOM_DROP_DB, SQLCOM_ALTER_DB,
SQLCOM_REPAIR, SQLCOM_REPLACE, SQLCOM_REPLACE_SELECT,
SQLCOM_CREATE_FUNCTION, SQLCOM_DROP_FUNCTION,
SQLCOM_REVOKE,SQLCOM_OPTIMIZE, SQLCOM_CHECK,
@@ -62,7 +64,8 @@ enum enum_sql_command {
SQLCOM_HA_OPEN, SQLCOM_HA_CLOSE, SQLCOM_HA_READ,
SQLCOM_SHOW_SLAVE_HOSTS, SQLCOM_DELETE_MULTI, SQLCOM_MULTI_UPDATE,
SQLCOM_SHOW_BINLOG_EVENTS, SQLCOM_SHOW_NEW_MASTER, SQLCOM_DO,
SQLCOM_EMPTY_QUERY,
SQLCOM_SHOW_WARNS, SQLCOM_EMPTY_QUERY, SQLCOM_SHOW_ERRORS,
SQLCOM_SHOW_COLUMN_TYPES, SQLCOM_SHOW_TABLE_TYPES, SQLCOM_SHOW_PRIVILEGES,
SQLCOM_END
};
@@ -78,6 +81,7 @@ enum lex_states
STATE_IDENT_OR_KEYWORD
};
typedef List<Item> List_item;
typedef struct st_lex_master_info
@@ -93,7 +97,8 @@ typedef struct st_lex_master_info
enum sub_select_type
{
UNSPECIFIED_TYPE, UNION_TYPE, INTERSECT_TYPE, EXCEPT_TYPE, OLAP_TYPE, NOT_A_SELECT
UNSPECIFIED_TYPE,UNION_TYPE, INTERSECT_TYPE,
EXCEPT_TYPE, GLOBAL_OPTIONS_TYPE, DERIVED_TABLE_TYPE, OLAP_TYPE
};
enum olap_type
@@ -101,27 +106,183 @@ enum olap_type
UNSPECIFIED_OLAP_TYPE, CUBE_TYPE, ROLLUP_TYPE
};
/* The state of the lex parsing for selects */
/*
The state of the lex parsing for selects
All select describing structures linked with following pointers:
- list of neighbors (next/prev) (prev of first element point to slave
pointer of upper structure)
- one level units for unit (union) structure
- member of one union(unit) for ordinary select_lex
- pointer to master
- outer select_lex for unit (union)
- unit structure for ordinary select_lex
- pointer to slave
- first list element of select_lex belonged to this unit for unit
- first unit in list of units that belong to this select_lex (as
subselects or derived tables) for ordinary select_lex
- list of all select_lex (for group operation like correcting list of opened
tables)
for example for following query:
typedef struct st_select_lex
{
enum sub_select_type linkage;
enum olap_type olap;
char *db,*db1,*table1,*db2,*table2; /* For outer join using .. */
Item *where,*having;
ha_rows select_limit,offset_limit;
select *
from table1
where table1.field IN (select * from table1_1_1 union
select * from table1_1_2)
union
select *
from table2
where table2.field=(select (select f1 from table2_1_1_1_1
where table2_1_1_1_1.f2=table2_1_1.f3)
from table2_1_1
where table2_1_1.f1=table2.f2)
union
select * from table3;
we will have following structure:
main unit
select1 select2 select3
|^^ |^
s||| ||master
l||| |+---------------------------------+
a||| +---------------------------------+|
v|||master slave ||
e||+-------------------------+ ||
V| neighbor | V|
unit 1.1<==================>unit1.2 unit2.1
select1.1.1 select 1.1.2 select1.2.1 select2.1.1 select2.1.2
|^
||
V|
unit2.1.1.1
select2.1.1.1.1
relation in main unit will be following:
main unit
|^^^
||||
|||+------------------------------+
||+--------------+ |
slave||master | |
V| neighbor | neighbor |
select1<========>select2<========>select3
list of all select_lex will be following (as it will be constructed by
parser):
select1->select2->select3->select2.1.1->select 2.1.2->select2.1.1.1.1-+
|
+---------------------------------------------------------------------+
|
+->select1.1.1->select1.1.2
*/
/*
Base class for st_select_lex (SELECT_LEX) &
st_select_lex_unit (SELECT_LEX_UNIT)
*/
class st_select_lex_node {
protected:
st_select_lex_node *next, **prev, /* neighbor list */
*master, *slave, /* vertical links */
*link_next, **link_prev; /* list of whole SELECT_LEX */
public:
ulong options;
enum sub_select_type linkage;
SQL_LIST order_list; /* ORDER clause */
ha_rows select_limit, offset_limit; /* LIMIT clause parameters */
void init_query();
void init_select();
void include_down(st_select_lex_node *upper);
void include_neighbour(st_select_lex_node *before);
void include_global(st_select_lex_node **plink);
void exclude();
private:
void fast_exclude();
};
/*
SELECT_LEX_UNIT - unit of selects (UNION, INTERSECT, ...) group
SELECT_LEXs
*/
class st_lex;
class st_select_lex;
class st_select_lex_unit: public st_select_lex_node {
public:
/*
Pointer to 'last' select or pointer to unit where stored
global parameters for union
*/
st_select_lex_node *global_parameters;
/* LIMIT clause runtime counters */
ha_rows select_limit_cnt, offset_limit_cnt;
void init_query();
bool create_total_list(THD *thd, st_lex *lex, TABLE_LIST **result);
st_select_lex* outer_select() { return (st_select_lex*) master; }
st_select_lex* first_select() { return (st_select_lex*) slave; }
st_select_lex_unit* next_unit() { return (st_select_lex_unit*) next; }
friend void mysql_init_query(THD *thd);
private:
bool create_total_list_n_last_return(THD *thd, st_lex *lex,
TABLE_LIST ***result);
};
typedef class st_select_lex_unit SELECT_LEX_UNIT;
/*
SELECT_LEX - store information of parsed SELECT_LEX statment
*/
class JOIN;
class st_select_lex: public st_select_lex_node
{
public:
char *db, *db1, *table1, *db2, *table2; /* For outer join using .. */
Item *where, *having; /* WHERE & HAVING clauses */
enum olap_type olap;
List<List_item> expr_list;
List<List_item> when_list;
SQL_LIST order_list,table_list,group_list;
List<Item> item_list;
List<String> interval_list,use_index, *use_index_ptr,
List<List_item> when_list; /* WHEN clause */
SQL_LIST table_list, group_list; /* FROM & GROUP BY clauses */
List<Item> item_list; /* list of fields & expressions */
List<String> interval_list, use_index, *use_index_ptr,
ignore_index, *ignore_index_ptr;
List<Item_func_match> ftfunc_list;
uint in_sum_expr, sort_default;
bool create_refs, braces;
st_select_lex *next;
} SELECT_LEX;
JOIN *join; /* after JOIN::prepare it is pointer to corresponding JOIN */
uint in_sum_expr;
bool create_refs;
bool braces; /* SELECT ... UNION (SELECT ... ) <- this braces */
bool depended; /* depended from outer select subselect */
/* TRUE when having fix field called in processing of this SELECT */
bool having_fix_field;
void init_query();
void init_select();
st_select_lex_unit* master_unit() { return (st_select_lex_unit*) master; }
st_select_lex_unit* first_inner_unit()
{
return (st_select_lex_unit*) slave;
}
st_select_lex* outer_select()
{
return (st_select_lex*) master_unit()->outer_select();
}
st_select_lex* next_select() { return (st_select_lex*) next; }
st_select_lex* next_select_in_list()
{
return (st_select_lex*) link_next;
}
st_select_lex_node** next_select_in_list_addr()
{
return &link_next;
}
friend void mysql_init_query(THD *thd);
};
typedef class st_select_lex SELECT_LEX;
/* The state of the lex parsing. This is saved in the THD struct */
@@ -130,7 +291,10 @@ typedef struct st_lex
{
uint yylineno,yytoklen; /* Simulate lex */
LEX_YYSTYPE yylval;
SELECT_LEX select_lex, *select, *last_selects;
SELECT_LEX_UNIT unit; /* most upper unit */
SELECT_LEX select_lex, /* first SELECT_LEX */
/* current SELECT_LEX in parsing */
*select;
uchar *ptr,*tok_start,*tok_end,*end_of_query;
char *length,*dec,*change,*name;
char *backup_dir; /* For RESTORE/BACKUP */
@@ -141,6 +305,7 @@ typedef struct st_lex
sql_exchange *exchange;
List<key_part_spec> col_list;
List<key_part_spec> ref_list;
List<Alter_drop> drop_list;
List<Alter_column> alter_list;
List<String> interval_list;
@@ -151,10 +316,11 @@ typedef struct st_lex
List<Item> *insert_list,field_list,value_list;
List<List_item> many_values;
List<set_var_base> var_list;
List<Item> param_list;
SQL_LIST proc_list, auxilliary_table_list;
TYPELIB *interval;
create_field *last_field;
Item *default_value;
Item *default_value, *comment;
CONVERT *convert_set;
CONVERT *thd_convert_set; // Set with SET CHAR SET
LEX_USER *grant_user;
@@ -167,6 +333,7 @@ typedef struct st_lex
USER_RESOURCES mqh;
ulong thread_id,type;
enum_sql_command sql_command;
thr_lock_type lock_option;
enum lex_states next_state;
enum enum_duplicates duplicates;
enum enum_tx_isolation tx_isolation;
@@ -174,11 +341,14 @@ typedef struct st_lex
enum ha_rkey_function ha_rkey_mode;
enum enum_enable_or_disable alter_keys_onoff;
enum enum_var_type option_type;
uint grant,grant_tot_col,which_columns, union_option;
thr_lock_type lock_option;
bool drop_primary,drop_if_exists,local_file, olap;
bool in_comment,ignore_space,verbose,simple_alter;
uint grant, grant_tot_col, which_columns, union_option;
uint fk_delete_opt, fk_update_opt, fk_match_option;
uint param_count;
bool drop_primary, drop_if_exists, local_file, olap;
bool in_comment, ignore_space, verbose, simple_alter;
bool derived_tables;
uint slave_thd_opt;
CHARSET_INFO *charset;
} LEX;