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Sql 如何对一系列值对运行查询并将结果存储在临时表中?_Sql_Tsql_Parameters_Parameter Passing - Fatal编程技术网

Sql 如何对一系列值对运行查询并将结果存储在临时表中?

Sql 如何对一系列值对运行查询并将结果存储在临时表中?,sql,tsql,parameters,parameter-passing,Sql,Tsql,Parameters,Parameter Passing,假设我有一个值数组: A1,A1,A2,A2,A3,A3,A4,A4….,An,An 我应该如何对A1、A1…..自动执行和运行下面的TSQL查询,一对,一对 SELECT COUNT (1) FROM food WHERE calories = Ai AND ingredient = ai --i = {1..n} 因此,Ai获得的每个计数,Ai{i=1..n}将存储在一个临时表中 谢谢您可以使用Dynamicx SQL完成此操作,如下所示: declare @count int, @lim

假设我有一个值数组:

A1,A1,A2,A2,A3,A3,A4,A4….,An,An

我应该如何对A1、A1…..自动执行和运行下面的TSQL查询,一对,一对

SELECT COUNT (1)
FROM food
WHERE calories = Ai AND ingredient = ai --i = {1..n}
因此,Ai获得的每个计数,Ai{i=1..n}将存储在一个临时表中


谢谢

您可以使用Dynamicx SQL完成此操作,如下所示:

declare @count int, @limit int
select @count = 0, @limit = 5 -- limit is n

declare @sqlcmd varchar(300)

-- table
create table #result (
combination varchar(10),
total int
)

while @count < @limit
begin
  select @sqlcmd = 'insert into #results select distinct "(" + ingredient + "," + calories + ")", count(*) from food where calories = A' + convert(varchar, @count) + ' and ingredient = a' + convert(varchar, @count)

  exec(@sqlcmd)

  select @count = @count + 1
end

将数组中的值插入临时表中,我稍后将使用相同的值进行计算:

create table #pairs (
    calories    varchar(50),
    ingredient  varchar(50),
    count       int
)
然后,我们可以通过一个步骤得到结果:

UPDATE p
SET count = x.count
FROM #pairs p inner join
    (   SELECT f.calories, f.ingredient, COUNT(*) as count
        FROM food f inner join
            #pairs p ON f.calories = p.calories and f.ingredient = p.ingredient
        GROUP BY f.calories, f.ingredient
    ) x ON p.calories = x.calories and p.ingredient = x.ingredient


select * from #pairs

在sql数据库中的临时表中?以哪种形式有A1、A1、A2、A2、A3、A3、A4、A4….、An、An?我假设数组为A1、A2、A3。。A和a1、a2、a3。。卡路里,但如果不是我可以改变的话,就在这里说: