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Fixed multi-table-delete

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Optimize fixed length MyISAM rows to use pread/pwrite.
This commit is contained in:
monty@hundin.mysql.fi
2001-06-15 05:03:15 +03:00
parent 595d087e05
commit a06f391e7a
16 changed files with 728 additions and 487 deletions
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9
sql/sql_select.cc
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@@ -484,8 +484,11 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
(group && order) ||
test(select_options & OPTION_BUFFER_RESULT)));
make_join_readinfo(&join, (select_options & SELECT_DESCRIBE) |
(ftfuncs.elements ? 0 : SELECT_USE_CACHE)); // No cache for MATCH
// No cache for MATCH
make_join_readinfo(&join,
(select_options & (SELECT_DESCRIBE |
SELECT_NO_JOIN_CACHE)) |
(ftfuncs.elements ? SELECT_NO_JOIN_CACHE : 0));
/* Need to tell Innobase that to play it safe, it should fetch all
columns of the tables: this is because MySQL
@@ -2465,7 +2468,7 @@ make_join_readinfo(JOIN *join,uint options)
** if previous table use cache
*/
table->status=STATUS_NO_RECORD;
if (i != join->const_tables && (options & SELECT_USE_CACHE) &&
if (i != join->const_tables && !(options & SELECT_NO_JOIN_CACHE) &&
tab->use_quick != 2 && !tab->on_expr)
{
if ((options & SELECT_DESCRIBE) ||