Teradata 奇淫技巧

        INSERT INTO stgICBatchUpload 
        SELECT     MAX(CASE WHEN attr_no = 1 THEN CAST(token AS VARCHAR(20)) END) AS EffectiveDtae, 
                MAX(CASE WHEN attr_no = 2 THEN CAST(token AS VARCHAR(20)) END) AS RIC, 
                MAX(CASE WHEN attr_no = 3 THEN CAST(token AS VARCHAR(5))  END) AS ClassificationType, 
                MAX(CASE WHEN attr_no = 4 THEN CAST(token AS VARCHAR(20)) END) AS SubsectorCode, 
                CURRENT_TIMESTAMP,USER,CURRENT_TIMESTAMP,USER    
        FROM ( 
                SELECT tokennum, 4 AS NumCols,
                    CASE WHEN token ='' THEN NULL ELSE token END AS token, 
                    (tokennum-1)/NumCols AS recno, 
                    tokennum-(recno*NumCols) AS attr_no 
                FROM TABLE (
                    STRTOK_SPLIT_TO_TABLE(1,'2021-09-06|6878.HK|BUS|601020#2021-09-06|2099.HK|BUS|051010#2021-09-06|3313.HK|BUS|602010#2021-09-06|3623.HK|BUS|503040#','|#')
                    RETURNS (outkey INTEGER, tokennum INTEGER, token VARCHAR(32)CHARACTER SET UNICODE) 
                ) AS d
        ) AS T 
        GROUP BY recno