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WL#1629: SHOW with WHERE(partially) &

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WL#173:  Create Data Dictionary Tables for SHOW Commands
This commit is contained in:
gluh@gluh.mysql.r18.ru
2004-11-13 13:56:39 +03:00
parent 7df412160a
commit 321f803784
19 changed files with 2932 additions and 700 deletions
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29
sql/sql_select.cc
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@ -1221,6 +1221,12 @@ JOIN::exec()
List<Item> *curr_fields_list= &fields_list;
TABLE *curr_tmp_table= 0;
if ((curr_join->select_lex->options & OPTION_SCHEMA_TABLE) &&
get_schema_tables_result(curr_join))
{
DBUG_VOID_RETURN;
}
/* Create a tmp table if distinct or if the sort is too complicated */
if (need_tmp)
{
@ -2129,6 +2135,8 @@ make_join_statistics(JOIN *join,TABLE_LIST *tables,COND *conds,
s->dependent= tables->dep_tables;
s->key_dependent= 0;
if (tables->schema_table)
table->file->records= 2;
s->on_expr_ref= &tables->on_expr;
if (*s->on_expr_ref)
@ -7724,7 +7732,7 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
blob_count,group_null_items;
bool using_unique_constraint=0;
bool not_all_columns= !(select_options & TMP_TABLE_ALL_COLUMNS);
char *tmpname,path[FN_REFLEN];
char *tmpname,path[FN_REFLEN], filename[FN_REFLEN];
byte *pos,*group_buff;
uchar *null_flags;
Field **reg_field, **from_field, **blob_field;
@ -7746,14 +7754,15 @@ create_tmp_table(THD *thd,TMP_TABLE_PARAM *param,List<Item> &fields,
temp_pool_slot = bitmap_set_next(&temp_pool);
if (temp_pool_slot != MY_BIT_NONE) // we got a slot
sprintf(path, "%s%s_%lx_%i", mysql_tmpdir, tmp_file_prefix,
current_pid, temp_pool_slot);
sprintf(filename, "%s_%lx_%i", tmp_file_prefix,
current_pid, temp_pool_slot);
else // if we run out of slots or we are not using tempool
sprintf(path,"%s%s%lx_%lx_%x",mysql_tmpdir,tmp_file_prefix,current_pid,
sprintf(filename,"%s%lx_%lx_%x",tmp_file_prefix,current_pid,
thd->thread_id, thd->tmp_table++);
if (lower_case_table_names)
my_casedn_str(files_charset_info, path);
sprintf(path, "%s%s", mysql_tmpdir, filename);
if (group)
{
@ -12879,8 +12888,16 @@ void st_table_list::print(THD *thd, String *str)
{
append_identifier(thd, str, db, db_length);
str->append('.');
append_identifier(thd, str, real_name, real_name_length);
cmp_name= real_name;
if (schema_table)
{
append_identifier(thd, str, alias, strlen(alias));
cmp_name= alias;
}
else
{
append_identifier(thd, str, real_name, real_name_length);
cmp_name= real_name;
}
}
if (my_strcasecmp(table_alias_charset, cmp_name, alias))
{