oracle行转列实现

2.插入测试数据

insert into test_table (T1, T2, T3)
values (‘张三‘, ‘语文‘, ‘88‘);

insert into test_table (T1, T2, T3)
values (‘张三‘, ‘数学‘, ‘99‘);

insert into test_table (T1, T2, T3)
values (‘张三‘, ‘英语‘, ‘100‘);

insert into test_table (T1, T2, T3)
values (‘李四‘, ‘语文‘, ‘79‘);

insert into test_table (T1, T2, T3)
values (‘李四‘, ‘数学‘, ‘100‘);

insert into test_table (T1, T2, T3)
values (‘李四‘, ‘英语‘, ‘99‘);

insert into test_table (T1, T2, T3)
values (‘王五‘, ‘语文‘, ‘99‘);

insert into test_table (T1, T2, T3)
values (‘王五‘, ‘数学‘, ‘100‘);

insert into test_table (T1, T2, T3)
values (‘王五‘, ‘英语‘, ‘98‘);

insert into test_table (T1, T2, T3)
values (‘李六‘, ‘语文‘, ‘88‘);

insert into test_table (T1, T2, T3)
values (‘李六‘, ‘英语‘, ‘99‘);

insert into test_table (T1, T2, T3)
values (‘李六‘, ‘数学‘, ‘100‘);

3.行转列之前效果

我们先查询一下现在的效果

 4.下面是行转列写法

 select *  from test_table  pivot (max(T3) for T2 in(
 ‘语文‘ as 语文，
 ‘数学‘ as 数学,
 ‘英语‘ as 英语
 ))

效果如下：

 这样就非常简单的实现了。

oracle行转列实现

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