給的資料如下圖：

需要實現的結果(需要對label去重)：

mysql：

建表和準備資料

CREATE TABLE `comp_label`  (
  `compName` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL,
  `label` varchar(255) CHARACTER SET utf8 COLLATE utf8_general_ci DEFAULT NULL
) ENGINE = InnoDB CHARACTER SET = latin1 COLLATE = latin1_swedish_ci ROW_FORMAT =
 
 Compact;
INSERT INTO `comp_label` VALUES ('視野數科', 'FourthCompany');
INSERT INTO `comp_label` VALUES ('視野數科', 'PrepareThirdCompany');
INSERT INTO `comp_label` VALUES ('視野數科', 'PrepareThirdCompany');
INSERT INTO `comp_label` VALUES ('視野數科', 'SYBI10000');
INSERT INTO `comp_label` VALUES ('天眼查', 'SYBB10000');

實現：

SELECT compName,GROUP_CONCAT(DISTINCT label) label FROM comp_label GROUP BY compName

hive:

建表和準備資料

CREATE TABLE `default.comp_label`(
  `compName` string,
  `label` string)
ROW FORMAT SERDE 
  'org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe' 
WITH SERDEPROPERTIES ( 
  'field.delim'='\u0001
 
', 
  'line.delim'='\n', 
  'serialization.format'='r') 
STORED AS INPUTFORMAT 
  'org.apache.hadoop.mapred.TextInputFormat' 
OUTPUTFORMAT 
  'org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat';
INSERT INTO `default.comp_label` VALUES ('視野數科', 'FourthCompany'),('視野數科', 'PrepareThirdCompany'),
('視野數科', 'PrepareThirdCompany'), ('視野數科', 'SYBI10000'),('天眼查', 'SYBB10000');

實現：

SELECT compName,concat_ws(',',collect_set(label)) AS label FROM default.comp_label GROUP BY compName

hive如果不去重

SELECT compName,concat_ws(',',collect_list(label)) AS label FROM default.comp_label GROUP BY compName