Sql 如何在枢轴中应用条件聚合函数?
我有以下疑问:Sql 如何在枢轴中应用条件聚合函数?,sql,oracle,oracle11g,Sql,Oracle,Oracle11g,我有以下疑问: SELECT "CASE_RECORD_ID", "OPEN_DT", "PENDING_DT", "CLOSED_DT" FROM (SELECT case_record_id, workflow_status_cd, workflow_status_dt FROM case_workflow_status ) PIVOT ( MIN(workflow_status_dt) FOR workflow_status_cd IN ('O' A
SELECT "CASE_RECORD_ID",
"OPEN_DT",
"PENDING_DT",
"CLOSED_DT"
FROM
(SELECT case_record_id,
workflow_status_cd,
workflow_status_dt
FROM case_workflow_status
) PIVOT ( MIN(workflow_status_dt) FOR workflow_status_cd IN ('O' AS open_dt, 'P' AS pending_dt, 'C' AS closed_dt) );
如何根据工作流状态应用不同的聚合函数?我的非工作尝试如下:
SELECT "CASE_RECORD_ID",
"OPEN_DT",
"PENDING_DT",
"CLOSED_DT"
FROM
(SELECT case_record_id,
workflow_status_cd,
workflow_status_dt
FROM case_workflow_status
)
PIVOT (
(
CASE workflow_status_cd
WHEN 'O' THEN MIN(workflow_status_dt)
WHEN 'P' THEN MAX(workflow_status_dt)
WHEN 'C' THEN MAX(workflow_status_dt)
END
)
FOR workflow_status_cd IN ('O' AS open_dt, 'P' AS pending_dt, 'C' AS closed_dt)
);
只需使用适当的聚合函数,并在每个函数中使用
CASE
语句,以匹配适当的状态:
SELECT CASE_RECORD_ID,
MIN( CASE WHEN workflow_status_cd = 'O' THEN workflow_status_dt END ) AS OPEN_DT,
MAX( CASE WHEN workflow_status_cd = 'P' THEN workflow_status_dt END ) AS PENDING_DT,
MAX( CASE WHEN workflow_status_cd = 'C' THEN workflow_status_dt END ) AS CLOSED_DT
FROM case_workflow_status
GROUP BY CASE_RECORD_ID;
只需使用适当的聚合函数,并在每个函数中使用
CASE
语句,以匹配适当的状态:
SELECT CASE_RECORD_ID,
MIN( CASE WHEN workflow_status_cd = 'O' THEN workflow_status_dt END ) AS OPEN_DT,
MAX( CASE WHEN workflow_status_cd = 'P' THEN workflow_status_dt END ) AS PENDING_DT,
MAX( CASE WHEN workflow_status_cd = 'C' THEN workflow_status_dt END ) AS CLOSED_DT
FROM case_workflow_status
GROUP BY CASE_RECORD_ID;