一条MySQL语句统计多个字段

测试数据表demo

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for test_order
-- ----------------------------
DROP TABLE IF EXISTS `test_order`;
CREATE TABLE `test_order` (
  `id` int(11) NOT NULL,
  `order_no` varchar(32) DEFAULT NULL COMMENT '订单号',
  `user_id` int(11) DEFAULT NULL COMMENT '用户id',
  `shop_id` int(11) DEFAULT NULL COMMENT '商家id',
  `status` tinyint(1) DEFAULT NULL COMMENT '订单状态 0待发货 1已发货 2已收货 3已评论 4申请退款',
  `create_time` int(10) DEFAULT NULL COMMENT '创建时间',
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

-- ----------------------------
-- Records of test_order
-- ----------------------------
INSERT INTO `test_order` VALUES ('1', 'aaaaaaaaa', '11', '111', '1', '1573041313');
INSERT INTO `test_order` VALUES ('2', 'bbbbbbbbb', '11', '222', '1', '1573041313');
INSERT INTO `test_order` VALUES ('3', 'ccccccccc', '11', '333', '2', '1573041313');
INSERT INTO `test_order` VALUES ('4', 'ddddddddd', '11', '222', '3', '1573041313');
INSERT INTO `test_order` VALUES ('5', 'eeeeeeeee', '11', '111', '4', '1573041313');
INSERT INTO `test_order` VALUES ('6', 'fffffffff', '11', '111', '3', '1573041313');
INSERT INTO `test_order` VALUES ('7', 'ggggggggg', '11', '222', '4', '1573041313');
INSERT INTO `test_order` VALUES ('8', 'hhhhhhhhh', '11', '111', '0', '1573041313');
INSERT INTO `test_order` VALUES ('9', 'iiiiiiiii', '11', '333', '0', '1573041313');
INSERT INTO `test_order` VALUES ('10', 'jjjjjjjjj', '11', '222', '1', '1573041313');

表截图

查询语句

SELECT
    count( CASE WHEN STATUS = 0 THEN 1 END ) AS '待发货',
    count( CASE WHEN STATUS = 1 THEN 1 END ) AS '已发货',
    COUNT( CASE WHEN STATUS = 2 THEN 1 END ) AS '已收货',
    count( CASE WHEN STATUS = 3 THEN 1 END ) AS '已评论',
    count( CASE WHEN STATUS = 4 THEN 1 END ) AS '申请退款' 
FROM
    test_order;

运行截图