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练习题

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追风少年

#1 Created at ... [Delete] [Delete and Lock User]
    static String buildSelectSql(String table, String[] fields) {
        // TODO:
        StringJoiner parameter = new StringJoiner(", ");
       
        for (String field : fields) {
            parameter.add(field);
        }

        StringBuilder sb = new StringBuilder();
        sb.append("SELECT ")
        .append(parameter)
        .append(" FROM ")
        .append(table);

        return sb.toString();
    }

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