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ALTER TABLE ... DISABLE KEYS / ALTER TABLE ... ENABLE KEYS

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unknown
2001-05-11 22:26:12 +02:00
parent 9afb49f53c
commit 5e52875b8f
9 changed files with 119 additions and 53 deletions
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70
sql/sql_table.cc
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@@ -1080,7 +1080,9 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
List<Alter_column> &alter_list,
ORDER *order,
bool drop_primary,
enum enum_duplicates handle_duplicates)
enum enum_duplicates handle_duplicates,
enum enum_enable_or_disable keys_onoff,
bool simple_alter)
{
TABLE *table,*new_table;
int error;
@@ -1145,39 +1147,50 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
if (create_info->row_type == ROW_TYPE_DEFAULT)
create_info->row_type=table->row_type;
/* Check if the user only wants to do a simple RENAME */
/* In some simple cases we need not to recreate the table */
thd->proc_info="setup";
if (new_name != table_name &&
!fields.elements && !keys.elements && ! drop_list.elements &&
!alter_list.elements && !drop_primary &&
new_db_type == old_db_type && create_info->max_rows == 0 &&
create_info->auto_increment_value == 0 && !table->tmp_table)
if (simple_alter)
{
thd->proc_info="rename";
VOID(pthread_mutex_lock(&LOCK_open));
/* Then do a 'simple' rename of the table */
error=0;
if (!access(new_name_buff,F_OK))
if (new_name != table_name)
{
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),new_name);
error= -1;
}
else
{
*fn_ext(new_name)=0;
close_cached_table(thd,table);
if (mysql_rename_table(old_db_type,db,table_name,new_db,new_name))
error= -1;
}
if (!error && (error=ha_commit_rename(thd)))
{
my_error(ER_GET_ERRNO,MYF(0),error);
error=1;
}
thd->proc_info="rename";
VOID(pthread_mutex_lock(&LOCK_open));
/* Then do a 'simple' rename of the table */
error=0;
if (!access(new_name_buff,F_OK))
{
my_error(ER_TABLE_EXISTS_ERROR,MYF(0),new_name);
error= -1;
}
else
{
*fn_ext(new_name)=0;
close_cached_table(thd,table);
if (mysql_rename_table(old_db_type,db,table_name,new_db,new_name))
error= -1;
}
if (!error && (error=ha_commit_rename(thd)))
{
my_error(ER_GET_ERRNO,MYF(0),error);
error=1;
}
VOID(pthread_cond_broadcast(&COND_refresh));
VOID(pthread_mutex_unlock(&LOCK_open));
VOID(pthread_cond_broadcast(&COND_refresh));
VOID(pthread_mutex_unlock(&LOCK_open));
}
if (!error)
{
switch (keys_onoff)
{
case LEAVE_AS_IS: break;
case ENABLE: error=table->file->activate_all_index(thd); break;
case DISABLE:
table->file->deactivate_non_unique_index(table->file->records);
break;
}
}
if (!error)
{
mysql_update_log.write(thd, thd->query, thd->query_length);
@@ -1188,7 +1201,6 @@ int mysql_alter_table(THD *thd,char *new_db, char *new_name,
}
send_ok(&thd->net);
}
DBUG_RETURN(error);
}