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SELECT
(select sum( kcb.kucongyuliang )as ky from kcb) AS 列名1,
(select sum( sum( chajia)as cj )as ky from gxb)AS 列名2SELECT
别名1=(select sum( kcb.kucongyuliang )as ky from kcb),
别名2=(select sum( sum( chajia)as cj )as ky from gxb)SELECT
(select sum( kcb.kucongyuliang )as ky from kcb) AS COL,
(select sum( sum( chajia)as cj )as ky from gxb)AS COL1