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Also update join->all_fields whenever substitution happens, and append ref_pointer_array when needed. If at least one item in ORDER BY or GROUP BY has been substituted by a vcol this way, recount field types and recompute table index covering. Added tests for GROUP BY subst and table index covering. WIP TODOs: - code documentation incl. the function subst_vcols_in_order - do we need to deduplicate - see the TODO in subst_vcols_in_order |
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