SELECT t1.id, STUFF( ( SELECT ',' + CONVERT ( VARCHAR, CASE WHEN ISNUMERIC( REPLACE( t2.hsdj, ',', '' ) ) = 1 THEN CAST ( REPLACE( t2.hsdj, ',', '' ) AS FLOAT ) END ) FROM formtable_main_43_dt1 t2 WHERE t1.id = t2.mainid FOR XML PATH ( '' ) ), 1, 1, '' ) AS MergedValues FROM formtable_main_43 t1 INNER JOIN formtable_main_43_dt1 t2 ON t1.id = t2.mainid GROUP BY t1.id需要展示更多T1中字段，该怎么该

如果您需要在结果中展示更多的 t1 中的字段，您可以在 SELECT 语句中添加这些字段，同时在 GROUP BY 语句中也需要包含这些字段。例如，如果您想要展示 t1 中的字段 t1.field1 和 t1.field2，您可以将 SELECT 语句修改为：

SELECT t1.id, t1.field1, t1.field2, 
    STUFF(
        (
            SELECT ',' + CONVERT (VARCHAR,
                CASE 
                    WHEN ISNUMERIC(REPLACE(t2.hsdj, ',', '')) = 1 THEN 
                        CAST(REPLACE(t2.hsdj, ',', '') AS FLOAT)
                END
            )
            FROM formtable_main_43_dt1 t2
            WHERE t1.id = t2.mainid 
            FOR XML PATH('')
        ), 1, 1, ''
    ) AS MergedValues
FROM formtable_main_43 t1 
INNER JOIN formtable_main_43_dt1 t2 ON t1.id = t2.mainid 
GROUP BY t1.id, t1.field1, t1.field2

请注意，根据您的需求，您可能还需要添加其他的 t1 字段。