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WL3527: 5.1

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renamed "--old-mode" to "--old" to prevent
 ambiguity.
 "old" now appears in SHOW VARIABLES as a
 read-only option.
This commit is contained in:
gkodinov/kgeorge@magare.gmz 2007-03-26 19:15:30 +03:00
parent 8f0e9c51c4
commit 101857299a
6 changed files with 25 additions and 4 deletions
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5
mysql-test/r/group_by.result
View file

@ -1141,4 +1141,9 @@ EXPLAIN SELECT 1 FROM t2 WHERE a IN
id select_type table type possible_keys key key_len ref rows Extra
1 PRIMARY t2 index NULL a 5 NULL 4 Using where; Using index
2 DEPENDENT SUBQUERY t1 ALL NULL NULL NULL NULL 256 Using where
SHOW VARIABLES LIKE 'old';
Variable_name Value
old OFF
SET @@old = off;
ERROR HY000: Variable 'old' is a read only variable
DROP TABLE t1, t2;

7
mysql-test/t/group_by.test
View file

@ -755,7 +755,8 @@ SET SQL_MODE = '';
#
# Bug #21174: Index degrades sort performance and
# optimizer does not honor IGNORE INDEX
# optimizer does not honor IGNORE INDEX.
# a.k.a WL3527.
#
CREATE TABLE t1 (a INT, b INT,
PRIMARY KEY (a),
@ -819,4 +820,8 @@ EXPLAIN SELECT a, SUM(b) FROM t2 IGNORE INDEX (a) GROUP BY a LIMIT 2;
EXPLAIN SELECT 1 FROM t2 WHERE a IN
(SELECT a FROM t1 USE INDEX (i2) IGNORE INDEX (i2));
SHOW VARIABLES LIKE 'old';
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@old = off;
DROP TABLE t1, t2;

2
sql/mysqld.cc
View file

@ -6268,7 +6268,7 @@ The minimum value for this variable is 4096.",
(gptr*) &global_system_variables.net_write_timeout,
(gptr*) &max_system_variables.net_write_timeout, 0, GET_ULONG,
REQUIRED_ARG, NET_WRITE_TIMEOUT, 1, LONG_TIMEOUT, 0, 1, 0},
{ "old_mode", OPT_OLD_MODE, "Use compatible behaviour.",
{ "old", OPT_OLD_MODE, "Use compatible behavior.",
(gptr*) &global_system_variables.old_mode,
(gptr*) &max_system_variables.old_mode, 0, GET_BOOL, NO_ARG,
0, 0, 0, 0, 0, 0},

3
sql/set_var.cc
View file

@ -356,6 +356,8 @@ sys_var_thd_ulong sys_net_retry_count("net_retry_count",
&SV::net_retry_count,
0, fix_net_retry_count);
sys_var_thd_bool sys_new_mode("new", &SV::new_mode);
sys_var_bool_ptr_readonly sys_old_mode("old",
&global_system_variables.old_mode);
sys_var_thd_bool sys_old_alter_table("old_alter_table",
&SV::old_alter_table);
sys_var_thd_bool sys_old_passwords("old_passwords", &SV::old_passwords);
@ -942,6 +944,7 @@ SHOW_VAR init_vars[]= {
{sys_net_retry_count.name, (char*) &sys_net_retry_count, SHOW_SYS},
{sys_net_write_timeout.name,(char*) &sys_net_write_timeout, SHOW_SYS},
{sys_new_mode.name, (char*) &sys_new_mode, SHOW_SYS},
{sys_old_mode.name, (char*) &sys_old_mode, SHOW_SYS},
{sys_old_alter_table.name, (char*) &sys_old_alter_table, SHOW_SYS},
{sys_old_passwords.name, (char*) &sys_old_passwords, SHOW_SYS},
{"open_files_limit", (char*) &open_files_limit, SHOW_LONG},

10
sql/set_var.h
View file

@ -169,6 +169,16 @@ public:
};
class sys_var_bool_ptr_readonly :public sys_var_bool_ptr
{
public:
sys_var_bool_ptr_readonly(const char *name_arg, my_bool *value_arg)
:sys_var_bool_ptr(name_arg, value_arg)
{}
bool is_readonly() const { return 1; }
};
class sys_var_str :public sys_var
{
public:

2
sql/sql_base.cc
View file

@ -5772,7 +5772,6 @@ bool setup_tables_and_check_access(THD *thd,
TABLE_LIST *leaves_tmp= NULL;
bool first_table= true;
thd->leaf_count= 0;
if (setup_tables(thd, context, from_clause, tables,
&leaves_tmp, select_insert))
return TRUE;
@ -5790,7 +5789,6 @@ bool setup_tables_and_check_access(THD *thd,
return TRUE;
}
first_table= 0;
thd->leaf_count++;
}
return FALSE;
}