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sql_select.cc:

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if many plans have identical cost, which one will be used depends on how compiler optimizes floating-point calculations
  this fix adds repeatability to the optimizer


sql/sql_select.cc:
  if many plans have identical cost, which one will be used depends on how compiler optimizes floating-point calculations
  this fix adds repeatability to the optimizer
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unknown 2004-07-17 16:15:32 +02:00
parent df94015604
commit 851154ee30
1 changed files with 1 additions and 1 deletions
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sql/sql_select.cc
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@ -3614,7 +3614,7 @@ best_extension_by_limited_search(JOIN *join,
{ {
memcpy((gptr) join->best_positions, (gptr) join->positions, memcpy((gptr) join->best_positions, (gptr) join->positions,
sizeof(POSITION) * (idx + 1)); sizeof(POSITION) * (idx + 1));
join->best_read= current_read_time; join->best_read= current_read_time - 0.001;
} }
DBUG_EXECUTE("opt", DBUG_EXECUTE("opt",
print_plan(join, current_read_time, current_record_count, idx, "full_plan");); print_plan(join, current_read_time, current_record_count, idx, "full_plan"););