''SET NAMES utf8mb4;
SET FOREIGN_KEY_CHECKS = 0;

-- ----------------------------
-- Table structure for u
-- ----------------------------
DROP TABLE IF EXISTS `u`;
CREATE TABLE `u` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`teacher` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL,
`stu` varchar(255) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL,
`stu_age` int(11) NULL DEFAULT NULL,
PRIMARY KEY (`id`) USING BTREE
) ENGINE = InnoDB CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci ROW_FORMAT = Dynamic;

-- ----------------------------
-- Records of u
-- ----------------------------
INSERT INTO `u` VALUES (1, '王老师', '张三', 3);
INSERT INTO `u` VALUES (2, '王老师', '李四', 21);
INSERT INTO `u` VALUES (3, '王老师', '王五', 25);
INSERT INTO `u` VALUES (4, '李老师', '马六', 12);
INSERT INTO `u` VALUES (5, '李老师', 'aaa', 13);
INSERT INTO `u` VALUES (6, '李老师', 'bbb', 15);
INSERT INTO `u` VALUES (7, '马老师', 'ccc', 22);
INSERT INTO `u` VALUES (8, '马老师', 'ddd', 30);
INSERT INTO `u` VALUES (9, '马老师', 'eee', 31);

SET FOREIGN_KEY_CHECKS = 1;
''