Sql server 如何在sql中添加多个sum语句如果值为零，则它将总金额返回为零如何添加多个sum语句

（金额（当国籍为“沙特”和“达曼中央”且状态为空时的情况）（当前工资）结束）（金额（当国籍为“沙特”和“达曼中央”时的情况，以及从in（“达曼中央”、“达曼东”、“吉达SMPT”、“朱拜勒”、“哈迪德MTO”、“哈迪德FPH”、“伊本拉什德”）进行的内部转账（当前工资）结束）+（（金额（当国籍为“沙特”时，从“Dammam Central”进行内部转账，然后（当前工资）结束））作为Dammam Central，

这是您要找的吗

isnull((sum (case when NATIONALITY != 'Saudi' and DIVISION='Dammam Central' and STATUS is null then (current_salary) end)),0)-
isnull((sum (case when NATIONALITY != 'Saudi' and DIVISION='Dammam Central' and internal_transfer_from in ('Dammam Central','Dammam East','Jeddah SMPT','Jubail','hadeed MTO','Hadeed FPH','IBN Rushd') then (current_salary) end)),0)+
isnull(((sum (case when NATIONALITY != 'Saudi' and internal_transfer_from='Dammam Central' then (current_salary) end))),0) as Dammam_Central,

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注意：供参考

使用合并（字段名，0）=casesum（字段名）=0，然后sum（）否则sum（）结束

上面的样本

COALESCE(sum (case when NATIONALITY != 'Saudi' and DIVISION='Dammam Central' and STATUS is null then (current_salary) end)),0)- COALESCE(sum (case when NATIONALITY != 'Saudi' and DIVISION='Dammam Central' and internal_transfer_from in ('Dammam Central','Dammam East','Jeddah SMPT','Jubail','hadeed MTO','Hadeed FPH','IBN Rushd') then (current_salary) end)),0)+(COALESCE(sum (case when NATIONALITY != 'Saudi' and internal_transfer_from='Dammam Central' then (current_salary) end)),0) as Dammam_Central

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这意味着如何使用上面的一个