duckdb::ColumnIndexHashFunction Struct Reference

Public Member Functions
uint64_t	operator() (const ColumnIndex &index) const

Member Function Documentation

operator()()

uint64_t duckdb::ColumnIndexHashFunction::operator() ( const ColumnIndex &  index ) const

inline

                                                        {
        auto index_hasher = std::hash<idx_t>();
        auto field_hasher = std::hash<string>();
        queue<reference<const ColumnIndex>> to_hash;
 
        hash_t result = 0;
        to_hash.push(std::ref(index));
        while (!to_hash.empty()) {
            auto &current = to_hash.front();
            auto &children = current.get().GetChildIndexes();
            for (auto &child : children) {
                to_hash.push(child);
            }
 
            if (current.get().HasPrimaryIndex()) {
                result ^= index_hasher(current.get().GetPrimaryIndex());
            } else {
                result ^= field_hasher(current.get().GetFieldName());
            }
            to_hash.pop();
        }
        return result;
    }

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The documentation for this struct was generated from the following file:

• external/duckdb/duckdb.cpp