[Plsql] pivot_clause and unpivot_clause can have own alias

[jiefei30]

SELECT s2.id, name, subject, score
FROM scores2 s1
    UNPIVOT (
    score FOR subject IN (
        chinese_score AS 'Chinese',
        math_score AS 'Math',
        english_score AS 'English'
    )
) s2;

Here it is, pivot_clause and unpivot_clause can have own alias.
Previous query and its pivot_clause can both have an alias, but pivot_clause's alias will replace previous query alias.
which meas

SELECT s1.id, name, subject, score
FROM scores2 s1
    UNPIVOT (
    score FOR subject IN (
        chinese_score AS 'Chinese',
        math_score AS 'Math',
        english_score AS 'English'
    )
) s2;

if you use s1 to be the identifier will be wrong.
i tried these sql on livesql.oracle.com

[teverett]

@jiefei30 could you add a test case for this please?

[jiefei30]

@teverett I added two cases in /example folder : pivot14.sql, pivot15.sql

[teverett]

@jiefei30 thanks!