SpringBoot查询PGSQL分表后的数据的代码示例

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

public class Main {
    public static void main(String[] args) {
        String baseTableName = "card_device_trajectory_info"; // 基础表名

        String url = "jdbc:postgresql://localhost:5432/your_database";
        String user = "your_username";
        String password = "your_password";

        try (Connection conn = DriverManager.getConnection(url, user, password);
             Statement stmt = conn.createStatement()) {
            String sql = "SELECT table_name FROM information_schema.tables WHERE table_name LIKE '" + baseTableName + "%'";
            ResultSet rs = stmt.executeQuery(sql);

            // 处理查询结果，获取所有分表名称
            while (rs.next()) {
                String tableName = rs.getString("table_name");
                // 根据业务逻辑处理分表名称，比如存入集合或者数组中
            }

            // 根据业务逻辑构建查询语句来查询特定的分表
            for (String tableName : yourTableCollection) { // 替换yourTableCollection为你保存分表名称的集合或数组
                String querySql = "SELECT * FROM " + tableName + " WHERE your_condition_here";
                // 执行查询操作并处理结果
            }
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}