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71ce58a3b1
* multi-table updates
* new paid feature for limiting number of queries per hour for users
* optional syntax for multi-table deletes
* optimization for SQL_CALC_FOUND_ROWS
* a small addition for CREATE .. SELECT that will be of future use
I know that all this will require many additions to documentation,
which I have not done, but I am at Arjen's disposal to help him document
all this.
libmysqld/lib_sql.cc:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
mysql-test/r/multi_update.result:
Change of the result to accomodate multi-table updates
mysql-test/t/multi_update.test:
Change in multi-table tests to accomodate multi-table updates
BitKeeper/etc/ignore:
Added 50 sql/new.cc to the ignore list
scripts/mysql_install_db.sh:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/item_timefunc.h:
This is a small feature that will be of use later in the proper
creation of the tables out of CREATE ... SELECT...
Further changes will come after this resolve/push/test passes ..
sql/lex.h:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/mysql_priv.h:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/mysqld.cc:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/sql_acl.cc:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/sql_acl.h:
This is a small change required due to new paid feature of limiting
number of queries per hour for each user.
sql/sql_class.h:
These are changes required for multi-table updates.
sql/sql_lex.h:
Changes required for both multi-table updates and limiting number of
queries per hour (paid feature).
sql/sql_parse.cc:
Ha ! So many changes.
* multi-table updates
* limiting number of queries per hour for users
sql/sql_select.cc:
Optimisation for SQL_CALC_FOUND_ROWS, when a query involves a single
table, without WHERE or GROUP clause
sql/sql_update.cc:
multi-table updates
sql/sql_yacc.yy:
Many things :
* multi-table updates
* limiting number of queries per hour for users
* new optional syntax for multi-table deletes. This one is different
from the one demanded by user. USING clause MUST include ALL tables,
not just the ones that are used and not deleted from.
201 lines
6.2 KiB
C++
201 lines
6.2 KiB
C++
/* Copyright (C) 2000 MySQL AB & MySQL Finland AB & TCX DataKonsult AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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/* YACC and LEX Definitions */
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/* These may not be declared yet */
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class Table_ident;
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class sql_exchange;
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class LEX_COLUMN;
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// The following hack is needed because mysql_yacc.cc does not define
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// YYSTYPE before including this file
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#ifdef MYSQL_YACC
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#define LEX_YYSTYPE void *
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#else
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#include "lex_symbol.h"
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#include "sql_yacc.h"
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#define LEX_YYSTYPE YYSTYPE *
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#endif
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enum enum_sql_command {
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SQLCOM_SELECT, SQLCOM_CREATE_TABLE, SQLCOM_CREATE_INDEX, SQLCOM_ALTER_TABLE,
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SQLCOM_UPDATE, SQLCOM_INSERT, SQLCOM_INSERT_SELECT,
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SQLCOM_DELETE, SQLCOM_TRUNCATE, SQLCOM_DROP_TABLE, SQLCOM_DROP_INDEX,
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SQLCOM_SHOW_DATABASES, SQLCOM_SHOW_TABLES, SQLCOM_SHOW_FIELDS,
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SQLCOM_SHOW_KEYS, SQLCOM_SHOW_VARIABLES, SQLCOM_SHOW_LOGS, SQLCOM_SHOW_STATUS,
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SQLCOM_SHOW_PROCESSLIST, SQLCOM_SHOW_MASTER_STAT, SQLCOM_SHOW_SLAVE_STAT,
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SQLCOM_SHOW_GRANTS, SQLCOM_SHOW_CREATE,
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SQLCOM_LOAD,SQLCOM_SET_OPTION,SQLCOM_LOCK_TABLES,SQLCOM_UNLOCK_TABLES,
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SQLCOM_GRANT, SQLCOM_CHANGE_DB, SQLCOM_CREATE_DB, SQLCOM_DROP_DB,
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SQLCOM_REPAIR, SQLCOM_REPLACE, SQLCOM_REPLACE_SELECT,
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SQLCOM_CREATE_FUNCTION, SQLCOM_DROP_FUNCTION,
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SQLCOM_REVOKE,SQLCOM_OPTIMIZE, SQLCOM_CHECK,
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SQLCOM_FLUSH, SQLCOM_KILL, SQLCOM_ANALYZE,
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SQLCOM_ROLLBACK, SQLCOM_COMMIT, SQLCOM_SLAVE_START, SQLCOM_SLAVE_STOP,
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SQLCOM_BEGIN, SQLCOM_LOAD_MASTER_TABLE, SQLCOM_CHANGE_MASTER,
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SQLCOM_RENAME_TABLE, SQLCOM_BACKUP_TABLE, SQLCOM_RESTORE_TABLE,
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SQLCOM_RESET, SQLCOM_PURGE, SQLCOM_SHOW_BINLOGS,
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SQLCOM_SHOW_OPEN_TABLES, SQLCOM_LOAD_MASTER_DATA,
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SQLCOM_HA_OPEN, SQLCOM_HA_CLOSE, SQLCOM_HA_READ,
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SQLCOM_SHOW_SLAVE_HOSTS, SQLCOM_MULTI_DELETE, SQLCOM_MULTI_UPDATE,
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SQLCOM_SHOW_BINLOG_EVENTS, SQLCOM_SHOW_NEW_MASTER
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};
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enum lex_states { STATE_START, STATE_CHAR, STATE_IDENT,
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STATE_IDENT_SEP,
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STATE_IDENT_START,
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STATE_FOUND_IDENT,
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STATE_SIGNED_NUMBER,
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STATE_REAL,
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STATE_HEX_NUMBER,
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STATE_CMP_OP,
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STATE_LONG_CMP_OP,
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STATE_STRING,
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STATE_COMMENT,
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STATE_END,
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STATE_OPERATOR_OR_IDENT,
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STATE_NUMBER_IDENT,
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STATE_INT_OR_REAL,
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STATE_REAL_OR_POINT,
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STATE_BOOL,
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STATE_EOL,
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STATE_ESCAPE,
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STATE_LONG_COMMENT,
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STATE_END_LONG_COMMENT,
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STATE_COLON,
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STATE_SET_VAR,
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STATE_USER_END,
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STATE_HOSTNAME,
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STATE_SKIP,
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STATE_USER_VARIABLE_DELIMITER
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};
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typedef List<Item> List_item;
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typedef struct st_lex_master_info
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{
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char* host, *user, *password,*log_file_name;
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uint port, connect_retry;
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ulong last_log_seq;
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ulonglong pos;
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ulong server_id;
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} LEX_MASTER_INFO;
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enum sub_select_type {UNSPECIFIED_TYPE,UNION_TYPE, INTERSECT_TYPE, EXCEPT_TYPE, NOT_A_SELECT};
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/* The state of the lex parsing for selects */
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typedef struct st_select_lex {
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enum sub_select_type linkage;
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char *db,*db1,*table1,*db2,*table2; /* For outer join using .. */
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Item *where,*having;
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ha_rows select_limit,offset_limit;
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ulong options;
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List<List_item> expr_list;
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List<List_item> when_list;
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SQL_LIST order_list,table_list,group_list;
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List<Item> item_list;
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List<String> interval_list,use_index, *use_index_ptr,
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ignore_index, *ignore_index_ptr;
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List<Item_func_match> ftfunc_list;
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uint in_sum_expr, sort_default;
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bool create_refs, braces;
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st_select_lex *next;
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} SELECT_LEX;
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class Set_option :public Sql_alloc {
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public:
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const char *name;
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Item *item;
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uint name_length;
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bool type; /* 1 if global */
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Set_option(bool par_type, const char *par_name, uint length,
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Item *par_item)
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:name(par_name), item(par_item), name_length(length), type(par_type) {}
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};
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/* The state of the lex parsing. This is saved in the THD struct */
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typedef struct st_lex {
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uint yylineno,yytoklen; /* Simulate lex */
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LEX_YYSTYPE yylval;
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SELECT_LEX select_lex, *select;
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uchar *ptr,*tok_start,*tok_end,*end_of_query;
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char *length,*dec,*change,*name;
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char *backup_dir; /* For RESTORE/BACKUP */
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char* to_log; /* For PURGE MASTER LOGS TO */
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char* x509_subject,*x509_issuer,*ssl_cipher;
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enum SSL_type ssl_type; /* defined in violite.h */
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String *wild;
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sql_exchange *exchange;
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List<key_part_spec> col_list;
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List<Alter_drop> drop_list;
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List<Alter_column> alter_list;
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List<String> interval_list;
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List<st_lex_user> users_list;
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List<LEX_COLUMN> columns;
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List<Key> key_list;
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List<create_field> create_list;
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List<Item> *insert_list,field_list,value_list;
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List<List_item> many_values;
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List<Set_option> option_list;
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SQL_LIST proc_list, auxilliary_table_list;
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TYPELIB *interval;
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create_field *last_field;
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Item *default_value;
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CONVERT *convert_set;
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LEX_USER *grant_user;
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gptr yacc_yyss,yacc_yyvs;
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THD *thd;
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udf_func udf;
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HA_CHECK_OPT check_opt; // check/repair options
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HA_CREATE_INFO create_info;
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LEX_MASTER_INFO mi; // used by CHANGE MASTER
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ulong thread_id,type;
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enum_sql_command sql_command;
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enum lex_states next_state;
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enum enum_duplicates duplicates;
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enum enum_tx_isolation tx_isolation;
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enum enum_ha_read_modes ha_read_mode;
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enum ha_rkey_function ha_rkey_mode;
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enum enum_enable_or_disable alter_keys_onoff;
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uint grant,grant_tot_col,which_columns, union_option, mqh;
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thr_lock_type lock_option;
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bool drop_primary,drop_if_exists,local_file;
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bool in_comment,ignore_space,verbose,simple_alter, option_type;
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} LEX;
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void lex_init(void);
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void lex_free(void);
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LEX *lex_start(THD *thd, uchar *buf,uint length);
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void lex_end(LEX *lex);
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extern pthread_key(LEX*,THR_LEX);
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extern LEX_STRING tmp_table_alias;
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#define current_lex (¤t_thd->lex)
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