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Fix for BUG#12082 (assert failure when the query fails to get a lock for record in 'const' table):

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Set table->key_read back to 0 regardless of whether join_read_const() succeeded or not.
This commit is contained in:
unknown
2005-07-31 02:47:54 +00:00
parent 8db171dfbe
commit 7a62b5928b
1 changed files with 7 additions and 6 deletions
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13
sql/sql_select.cc
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@ -9717,7 +9717,13 @@ join_read_const_table(JOIN_TAB *tab, POSITION *pos)
table->file->extra(HA_EXTRA_KEYREAD);
tab->index= tab->ref.key;
}
if ((error=join_read_const(tab)))
error=join_read_const(tab);
if (table->key_read)
{
table->key_read=0;
table->file->extra(HA_EXTRA_NO_KEYREAD);
}
if (error)
{
tab->info="unique row not found";
/* Mark for EXPLAIN that the row was not found */
@ -9725,11 +9731,6 @@ join_read_const_table(JOIN_TAB *tab, POSITION *pos)
if (!table->maybe_null || error > 0)
DBUG_RETURN(error);
}
if (table->key_read)
{
table->key_read=0;
table->file->extra(HA_EXTRA_NO_KEYREAD);
}
}
if (*tab->on_expr_ref && !table->null_row)
{