My previous patch was not good at all.

This one is better, but should not be final.

Better fix is to make some changes in ha_myisammrg::index_read

This patch also reverts my previous one ...
parent b44b4854
No related merge requests found
......@@ -25,6 +25,9 @@ int myrg_rprev(MYRG_INFO *info, byte *buf, int inx)
int err;
MI_INFO *mi;
if (!info || !info->current_table)
return HA_ERR_UNSUPPORTED;
/* at first, do rprev for the table found before */
if ((err=mi_rprev(info->current_table->table,NULL,inx)))
{
......
......@@ -152,12 +152,11 @@ int opt_sum_query(TABLE_LIST *tables, List<Item> &all_fields,COND *conds)
error=table->file->index_last(table->record[0]) !=0;
else
{
error= table->file->index_read(table->record[0], key_buff,
ref.key_length,
HA_READ_AFTER_KEY);
if (!error)
error=table->file->index_prev(table->record[0]) ||
key_cmp(table,key_buff,ref.key,ref.key_length);
(void)table->file->index_read(table->record[0], key_buff,
ref.key_length,
HA_READ_AFTER_KEY);
error=table->file->index_prev(table->record[0]) ||
key_cmp(table,key_buff,ref.key,ref.key_length);
}
if (table->key_read)
{
......
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