bk commit into 5.0 tree (konstantin:1.1979) BUG#14845

[konstantin]

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ChangeSet
  1.1979 05/11/19 19:00:02 konstantin@stripped +1 -0
  A fix for Bug#14845 "mysql_stmt_fetch returns MYSQL_NO_DATA when 
  COUNT(*) is 0" (the test case has been pushed already)

  sql/sql_cursor.cc
    1.4 05/11/19 18:59:56 konstantin@stripped +1 -2
    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 is a BitKeeper patch.  What follows are the unified diffs for the
# set of deltas contained in the patch.  The rest of the patch, the part
# that BitKeeper cares about, is below these diffs.
# User:	konstantin
# Host:	dragonfly.local
# Root:	/opt/local/work/mysql-5.0-8568

--- 1.3/sql/sql_cursor.cc	2005-11-10 17:05:11 +03:00
+++ 1.4/sql/sql_cursor.cc	2005-11-19 18:59:56 +03:00
@@ -661,11 +661,10 @@
 
 bool Select_materialize::send_fields(List<Item> &list, uint flags)
 {
-  bool rc;
   DBUG_ASSERT(table == 0);
   if (create_result_table(unit->thd, unit->get_unit_column_types(),
                           FALSE, thd->options | TMP_TABLE_ALL_COLUMNS, ""))
     return TRUE;
-  return rc;
+  return FALSE;
 }