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void unlock_table_names(TableList *last_table= NULL);
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table_map dep_tables; ///< tables the table depends on
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table_map on_expr_dep_tables; ///< tables on expression depends on
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TableList *embedding; ///< nested join containing the table
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List<TableList> *join_list; ///< join list the table belongs to
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plugin::StorageEngine *db_type; ///< table_type for handler
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/** true if an alias for this table was specified in the SQL. */