MAPREDUCE服务 MRS-Impala开发规则:执行Impala SQL

时间：2024-06-29 14:11:32

MAPREDUCE服务 MRS Impala开发规范

执行Impala SQL

执行Impala SQL，注意Impala SQL不能以";"结尾。

正确示例：

String sql = "SELECT COUNT(*) FROM employees_info";
Connection connection = DriverManager.getConnection(url, "", "");
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();

错误示例：

String sql = "SELECT COUNT(*) FROM employees_info;";
Connection connection = DriverManager.getConnection(url, "", "");
PreparedStatement statement = connection.prepareStatement(sql);
resultSet = statement.executeQuery();

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