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A fix for Bug#14845 "mysql_stmt_fetch returns MYSQL_NO_DATA when

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COUNT(*) is 0" (the test case has been pushed already)


sql/sql_cursor.cc:
  Fix a return of an unitialized variable: return_zero_rows
  checks the return value of send_fields and in case it's 1
  doesn't call send_data. This caused creation of an empty result 
  set for the case when there is a cursor against a select with a 
  group function and no matching rows.
This commit is contained in:
unknown 2005-11-19 19:00:02 +03:00
parent 6ba79a2516
commit 4ca413e940
1 changed files with 1 additions and 2 deletions
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sql/sql_cursor.cc
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@ -661,11 +661,10 @@ Materialized_cursor::~Materialized_cursor()
bool Select_materialize::send_fields(List<Item> &list, uint flags) bool Select_materialize::send_fields(List<Item> &list, uint flags)
{ {
bool rc;
DBUG_ASSERT(table == 0); DBUG_ASSERT(table == 0);
if (create_result_table(unit->thd, unit->get_unit_column_types(), if (create_result_table(unit->thd, unit->get_unit_column_types(),
FALSE, thd->options | TMP_TABLE_ALL_COLUMNS, "")) FALSE, thd->options | TMP_TABLE_ALL_COLUMNS, ""))
return TRUE; return TRUE;
return rc; return FALSE;
} }