จะเลือกข้อมูลจากคอลัมน์ตามข้อมูลในคอลัมน์อื่นและย้ายข้อมูลได้อย่างไร

นี่เป็นเพียงแบบสอบถามสาระสำคัญ:

SELECT
    COALESCE(MAX(CASE WHEN MEDIUM = 'EML' AND MEDIUM_DETAIL = 'PRIMARY'
                      THEN VALUE END),
             MAX(CASE WHEN MEDIUM = 'EML' AND MEDIUM_DETAIL = 'ALTERNATE'
                      THEN VALUE END)) AS EML,
    COALESCE(MAX(CASE WHEN MEDIUM = 'PHN' AND MEDIUM_DETAIL = 'HOME'
                      THEN VALUE END),
             MAX(CASE WHEN MEDIUM = 'PHN' AND MEDIUM_DETAIL = 'WORK'
                      THEN VALUE END),
             MAX(CASE WHEN MEDIUM = 'PHN' AND MEDIUM_DETAIL = 'MOBILE'
                      THEN VALUE END)) AS PHN
FROM yourTable;

อีกวิธีในการรับ:

select MEDIUM, MEDIUM_DETAIL, VALUE ,FIRST_VALUE(value) IGNORE NULLS OVER(partition by MEDIUM order by (case when medium_detail = 'PRIMARY' then 1
                                                                    when medium_detail = 'HOME' then 1 
                                                                    when medium_detail = 'WORK' then 2
                                                                    when medium_detail = 'MOBILE' THEN 3
                                                                    else 4 end) asc) from ttt;