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11 lines
316 B
C
11 lines
316 B
C
#ifndef OPT_GROUP_BY_CARDINALITY
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#define OPT_GROUP_BY_CARDINALITY
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double estimate_post_group_cardinality(JOIN *join, double join_output_card);
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void infer_derived_key_statistics(st_select_lex_unit* derived,
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KEY *keyinfo,
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uint key_parts);
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#endif
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