INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (30, '老大', '男', '111111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (31, '老二', '男', '11111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (32, '老三', '男', '1111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (33, '老四', '男', '12222222222');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (34, '老吴', '女', '11111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (35, '老六', '女', '22222233333');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (36, '老七', '女', '1111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (37, '老八', '女', '1111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (38, '老九', '女', '1111111111');
INSERT INTO mydata.customers (T_id, T_name, T_rsex, T_phone) VALUES (39, '老十', '女', '11111111111');
