pivot的格式

select from

( inner_query)

pivot(aggreate_function for pivot_column in ( list of values))

order by ...;

用法举例:

select from (select month,prd_type_id,amountfrom all_sales)pivot (sum(amount) for month in (1 as JAN,2 as FEB,3 as MAR,4 as APR)) order by prd_type_id

转换多个列

select * from(select month,prd_type_id,amountfrom all_sales)pivot(sum(amount) for (month,prd_type_id) in ((1,2) as JAN_P2,(2,3) as FEB_P3));

在转换中使用多个聚合函数

select * from (select cust_no,mag_man_cert_type,t.mag_man_cert_no,mag_man_type from L_CIF_ENT_CUST_MAG_MAN_INFO tpivot (max(mag_man_cert_NO) as no ,max(mag_man_cert_type) as type for mag_man_type In ('01' as GLR01,'02' as GLR02,'03' as GLR03));

unpivot可以实现列转行,所转的列的字段类型必须一致

unpivot 的用法举例：select * from PIVOT_SALES_DATE unpivot (amount for month in (JAN,FEB,MAR,APR));