Optimizer debugging with GDB
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Some useful things for debugging optimizer code with gdb.
h2. best_access_path
This is a function which adds another table to the join prefix.
A macro to print the join prefix already constructed:
<<code>>
define bap_print_prefix
set $i=0
while ($i < idx)
p join->positions[$i++].table->table->alias.Ptr
end
end
<<code>>
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