import java.sql.*; public class CheckDup { static final String U = "root"; static final String P = "Ylrz_1q2w3e4r5t6y"; public static void main(String[] a) throws Exception { Class.forName("com.mysql.cj.jdbc.Driver"); String[] dbs = {"fs_tenant_cs1","fs_tenant_t202606046007","fs_tenant_t202606119691","fs_tenant_t202606124273","fs_tenant_t202606154320","fs_tenant_t202606167389","fs_tenant_t202606174488","fs_tenant_t202606179328","fs_tenant_t202606179893"}; for (String db : dbs) { String url = "jdbc:mysql://cq-cdb-8fjmemkb.sql.tencentcdb.com:27220/" + db + "?serverTimezone=Asia/Shanghai"; try (Connection c = DriverManager.getConnection(url, U, P); Statement s = c.createStatement()) { // Find duplicate menu_ids in company_menu ResultSet rs = s.executeQuery( "SELECT menu_id, menu_name, COUNT(*) AS cnt, " + "GROUP_CONCAT(CONCAT('cid=',IFNULL(company_id,'NULL'),' vis=',visible)) AS versions " + "FROM company_menu WHERE menu_id BETWEEN 29900 AND 29999 " + "GROUP BY menu_id HAVING cnt > 1 ORDER BY menu_id"); int dup = 0; while (rs.next()) { if (dup == 0) System.out.println("\n" + db + " DUPLICATES:"); System.out.printf(" %s %-20s x%d [%s]\n", rs.getString(1), rs.getString(2), rs.getInt(3), rs.getString(4)); dup++; } if (dup == 0) { ResultSet r2 = s.executeQuery("SELECT COUNT(1) FROM company_menu WHERE menu_id BETWEEN 29900 AND 29999"); r2.next(); System.out.printf("%s: %d entries, 0 duplicates\n", db, r2.getInt(1)); } } } } }