我们构建了一段动态 sql，它可以从长格式的数据中生成广泛的视图。在这里看到：
CREATE PROCEDURE `selectPivotedTermpoints`(studyid varchar(300))
BEGIN
SET SESSION group_concat_max_len = 10000000;
SET @psql = NULL;
SET @finalSQL = NULL;
SET @StudyID = studyid;
SELECT
GROUP_CONCAT(DISTINCT
CONCAT('SUM(CASE WHEN terminate = ''', REPLACE(Terminate,'''', ''''''), ''' THEN 1 ELSE 0 END) AS `', REPLACE(Terminate,'''', ''), '`')
) INTO @psql
FROM Dashboard
WHERE studyid = @StudyID
AND completion_status = 'terminate';
SET @finalSQL = CONCAT('
SELECT Sample_provider as Provider,
completion_status as `Status`,',
@psql,'
FROM Dashboard
WHERE studyid = ''', @StudyID, '''
AND completion_status = …