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MDEV-5744
instead of remove query cache of OQ_GRAPH, use dependant table functions from query cache (like partition engine)
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points to check, from sql/ha_partition.cc
my_bool ha_partition::reg_query_cache_dependant_table(THD *thd,
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char *engine_key, uint engine_key_len,
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char *cache_key, uint cache_key_len,
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uint8 type,
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Query_cache *cache,
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Query_cache_block_table **block_table,
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handler *file,
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uint *n)
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uint ha_partition::count_query_cache_dependant_tables(uint8 *tables_type)
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my_bool ha_partition::register_query_cache_dependant_tables(THD *thd,
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Query_cache *cache,
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Query_cache_block_table **block_table,
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uint *n)
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