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Kettle在控件中拥有行列转换功能,但是行列转换貌似是弄反了。
一.行转列
1.数据库脚本
create TABLE StudentInfo ( studentno int, subject varchar(10), grade int );
insert into StudentInfo values(201105545,‘语文‘,80); insert into StudentInfo values(201105545,‘数学‘,82); insert into StudentInfo values(201105545,‘英语‘,84); insert into StudentInfo values(201105543,‘语文‘,70); insert into StudentInfo values(201105543,‘数学‘,74); insert into StudentInfo values(201105543,‘英语‘,76); insert into StudentInfo values(201105548,‘语文‘,90); insert into StudentInfo values(201105548,‘数学‘,93); insert into StudentInfo values(201105548,‘英语‘,94); commit;
2.总体行转列示意图
2.1表输入配置
2.2列转行配置
2.3字段选择配置
2.4文本文件输出配置
输出到文件后查看内容
二.列转行
1.数据库脚本
CREATE TABLE StudentInfo_TMP(studentno INT,Chinese INT,Math INT,English int); INSERT INTO StudentInfo_TMP VALUES(201105543,70,74,76); INSERT INTO StudentInfo_TMP VALUES(201105545,80,82,84); INSERT INTO StudentInfo_TMP VALUES(201105548,90,93,94);
2.整体示意图
2.1表输入
2.2行转列
2.3字段选择
2.4文本文件输出
3.执行后查看输出文本文件
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原文地址:http://www.cnblogs.com/OliverQin/p/5871330.html