Select nzj.Auto_id,nzj.name,nzj.content,nzj.moment,C.City From VetanNew_nizaijian As nzj,VetanNew_City As C Where nzj.area = c.Number
nzj.moment的字段是1,2的类型,我想如果是1则输出a,是2则输出b,有可能实现么?
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能不能在存储过程中判断需要查询的字段??
Select nzj.Auto_id,nzj.name,nzj.content,nzj.moment,C.City From VetanNew_nizaijian As nzj,VetanNew_City As C Where nzj.area = c.Number nzj.moment的字段是1,2的类型,我想如果是1则输出a,是2则输出b,有可能实现么?
Select nzj.Auto_id,nzj.name,nzj.content,
case nzj.moment
when '1' then 'a'
when '2' then 'b' end as moment,
C.City From VetanNew_nizaijian As nzj,VetanNew_City As C
Where nzj.area = c.Number
Select nzj.Auto_id,nzj.name,nzj.content,case nzj.moment when 1 then 'a' when 2 then 'b' end as moment,C.City From VetanNew_nizaijian As nzj,VetanNew_City As C Where nzj.area = c.Number
Select nzj.Auto_id,nzj.name,nzj.content,case nzj.moment when 1 then 'a' when 2 then 'b' else '无' end ,C.City From VetanNew_nizaijian As nzj,VetanNew_City As C Where nzj.area = c.Number