我需要帮助将update语句组合成1个语句

Question

我需要在SQL（Oracle）中使用相同的set值但不同where值更新大约500条记录。我想作为一个语句而不是500个不同的语句执行。任何帮助表示赞赏。以下是我的更新声明示例。

update proddta.f564211 
  set sd$prdcflg = '' 
where sd$prcflg = 'Y' 
AND sddoco = 86615 
and sddcto = 'S1' 
and sdlnid = 1.000

update proddta.f564211 
  set sd$prdcflg = '' 
where sd$prcflg = 'Y' 
AND sddoco = 86615 
and sddcto = 'S1' 
and sdlnid = 2.100

update proddta.f564211 
  set sd$prdcflg = '' 
where sd$prcflg = 'Y' 
AND sddoco = 86618 
and sddcto = 'S1' 
and sdlnid = 1.000

update proddta.f564211 
  set sd$prdcflg = '' 
where sd$prcflg = 'Y' 
AND sddoco = 86618 
and sddcto = 'S1' 
and sdlnid = 2.100

Answer 1

这个怎么样：

update proddta.f564211
set    sd$prdcflg = null
where  sd$prcflg = 'Y'
and    sddcto = 'S1'
and    ( sddoco, sdlnid ) in 
       ( (86615, 1.000)
       , (86615, 2.100)
       , (86618, 1.000)
       , (86618, 2.100) );