• anozdrin/alik@station.'s avatar
    Fix for BUG#31035: select from function, group by result crasher. · 707f0674
    anozdrin/alik@station. authored
    This actually, fix for the patch for bug-27354. The problem with
    the patch was that Item_func_sp::used_tables() was updated, but
    Item_func_sp::const_item() was not. So, for Item_func_sp, we had
    the following inconsistency:
      - used_tables() returned RAND_TABLE, which means that the item
        can produce "random" results;
      - but const_item() returned TRUE, which means that the item is
        a constant one.
    
    The fix is to change Item_func_sp::const_item() behaviour: it must
    return TRUE (an item is a constant one) only if a stored function
    is deterministic and each of its arguments (if any) is a constant
    item.
    707f0674
sp.result 151 KB