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Fix UNION

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New faster list iterators
Change list code to be simpler and faster
Optimize count(distinct)
New error messages for UNION
Make create_tmp_table more general to be usable by UNION
This commit is contained in:
monty@tik.mysql.fi
2001-08-02 06:29:50 +03:00
parent 423f2851c5
commit b13d453d50
57 changed files with 798 additions and 472 deletions
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8
sql/sql_load.cc
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@@ -91,7 +91,7 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
else
{ // Part field list
thd->dupp_field=0;
if (setup_tables(table_list) || setup_fields(thd,table_list,fields,1,0))
if (setup_tables(table_list) || setup_fields(thd,table_list,fields,1,0,0))
DBUG_RETURN(-1);
if (thd->dupp_field)
{
@@ -102,7 +102,7 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
uint tot_length=0;
bool use_blobs=0,use_timestamp=0;
List_iterator<Item> it(fields);
List_iterator_fast<Item> it(fields);
Item_field *field;
while ((field=(Item_field*) it++))
@@ -269,7 +269,7 @@ static int
read_fixed_length(THD *thd,COPY_INFO &info,TABLE *table,List<Item> &fields,
READ_INFO &read_info)
{
List_iterator<Item> it(fields);
List_iterator_fast<Item> it(fields);
Item_field *sql_field;
DBUG_ENTER("read_fixed_length");
@@ -332,7 +332,7 @@ read_sep_field(THD *thd,COPY_INFO &info,TABLE *table,
List<Item> &fields, READ_INFO &read_info,
String &enclosed)
{
List_iterator<Item> it(fields);
List_iterator_fast<Item> it(fields);
Item_field *sql_field;
uint enclosed_length;
DBUG_ENTER("read_sep_field");