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Fix for a bug which results in "Unknown Error".

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Query should actually return empty result set, but currently can't, as
it attempts to store NULL in NOT NULL field, because that is a match
made by self join conditions.
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unknown
2003-06-25 18:36:52 +03:00
parent bcfdc99d58
commit 2cc81ba3d3
1 changed files with 8 additions and 1 deletions
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9
sql/sql_select.cc
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@@ -969,7 +969,14 @@ mysql_select(THD *thd,TABLE_LIST *tables,List<Item> &fields,COND *conds,
group ? group : order, group ? group : order,
select_limit, select_limit,
thd->select_limit)) thd->select_limit))
goto err; /* purecov: inspected */ {
if (!join.join_tab[join.const_tables].select->quick)
error= return_zero_rows(&join, result, tables, fields,
0, select_options,
"Impossible WHERE noticed after reading const tables",
having,procedure);
goto err;
}
} }
join.having=having; // Actually a parameter join.having=having; // Actually a parameter
thd->proc_info="Sending data"; thd->proc_info="Sending data";