SQL/DB2 将行连接成一个字段 (DB2)
SQL/DB2 concatenate rows into one field (DB2)
尝试将 table 中的值与内部联接连接起来，这可能吗，示例代码已附上。
如果我删除 CM.CMCSNM 列，代码将正常工作
SELECT trim(CM.CMCSNM), CALLLOGP.CHSTKY,
SUBSTR(xmlserialize(xmlagg(xmltext(CONCAT( ', ',CALLLOGP.CHORD#))) as
VARCHAR(1024)), 3) AS Batches
FROM LS3DTA100A.CALLLOGP CALLLOGP inner join LS3DTA100A.CM CM on
CM.CMSTKY=CALLLOGP.CHSTKY
WHERE (CALLLOGP.CHOPENBY<>'')
AND (CALLLOGP.CHCLOSDT=0)
AND (CALLLOGP.CHACKNDT=0)
AND (CALLLOGP.CHUPDATE=0)
AND (CALLLOGP.CHCOMMENTS Like '%FRAME OOS%')
AND (CALLLOGP.CHSTKY Like '00%')
GROUP BY CALLLOGP.CHSTKY
错误消息是 SQL 错误 [42803]：[SQL0122] 列 CMCSNM 或 SELECT 列表中的表达式无效。
SQL0122N A SELECT statement with no GROUP BY clause contains a column
name or expression and a column function in the SELECT clause, or
a column name or expression is contained in the SELECT clause but
not in the GROUP BY clause.
您需要将 trim(CM.CMCSNM) 作为 GROUP BY 的一部分。例如：
GROUP BY trim(CM.CMCSNM), CALLLOGP.CHSTKY
尝试将 table 中的值与内部联接连接起来，这可能吗，示例代码已附上。
如果我删除 CM.CMCSNM 列，代码将正常工作
SELECT trim(CM.CMCSNM), CALLLOGP.CHSTKY,
SUBSTR(xmlserialize(xmlagg(xmltext(CONCAT( ', ',CALLLOGP.CHORD#))) as
VARCHAR(1024)), 3) AS Batches
FROM LS3DTA100A.CALLLOGP CALLLOGP inner join LS3DTA100A.CM CM on
CM.CMSTKY=CALLLOGP.CHSTKY
WHERE (CALLLOGP.CHOPENBY<>'')
AND (CALLLOGP.CHCLOSDT=0)
AND (CALLLOGP.CHACKNDT=0)
AND (CALLLOGP.CHUPDATE=0)
AND (CALLLOGP.CHCOMMENTS Like '%FRAME OOS%')
AND (CALLLOGP.CHSTKY Like '00%')
GROUP BY CALLLOGP.CHSTKY
错误消息是 SQL 错误 [42803]：[SQL0122] 列 CMCSNM 或 SELECT 列表中的表达式无效。
SQL0122N A SELECT statement with no GROUP BY clause contains a column
name or expression and a column function in the SELECT clause, or
a column name or expression is contained in the SELECT clause but
not in the GROUP BY clause.
您需要将 trim(CM.CMCSNM) 作为 GROUP BY 的一部分。例如：
GROUP BY trim(CM.CMCSNM), CALLLOGP.CHSTKY