编辑“︁C++ 字符串连接”︁（章节）

=== SQL查询构造 ===

构建动态SQL查询时（注意：实际应用应使用参数化查询防止SQL注入）：

<syntaxhighlight lang="cpp">
std::string buildQuery(const std::string& table, const std::vector<std::string>& columns) {
    std::string query = "SELECT ";
    
    for (size_t i = 0; i < columns.size(); ++i) {
        query += columns[i];
        if (i != columns.size() - 1) {
            query += ", ";
        }
    }
    
    query += " FROM " + table + ";";
    return query;
}
</syntaxhighlight>