Optimizer Debugging With GDB

Some useful things for debugging optimizer code with gdb.

best_access_path

This is a function which adds another table to the join prefix.

A macro to print the join prefix already constructed:

define bap_print_prefix
  set $i=0
  while ($i < idx)
    p join->positions[$i++].table->table->alias.Ptr
  end
end

advance_sj_state

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