sql - 如何从临时表中检索多个值并将它们插入另一个表？

Question

我有一个包含以下值的临时表

@TempTable
ID
1
2

对于临时表中的每个 ID，我要执行以下操作：

insert into ItemOrganisationSources
    select ByLineID, <TempTable.ID>, SourceTypeID
    from ItemOrganisationSources
    where ItemOrganisationID in (
        select ID from @TempTable)

Answer 1

从您的代码中不清楚您是否有临时表（以“#”为前缀）或表变量（以“@”为前缀，如您的示例）。不过，无论哪种方式，您都可以像引用任何其他表一样引用临时表/变量。

表变量：

insert into ItemOrganisationSources
    select i.ByLineID, t.ID, i.SourceTypeID
    from ItemOrganisationSources AS i
    inner join @TempTable AS t
      on i.ID = t.ID --Plug in the appropriate field to join on here
    where i.ItemOrganisationID in (
        select ID from @itemOrganisationIDsToBeDuplicated)

温度表：

insert into ItemOrganisationSources
    select i.ByLineID, t.ID, i.SourceTypeID
    from ItemOrganisationSources AS i
    inner join #TempTable AS t
      on i.ID = t.ID --Plug in the appropriate field to join on here
    where i.ItemOrganisationID in (
        select ID from @itemOrganisationIDsToBeDuplicated)

再次阅读您的问题后，我不确定您是要尝试将临时表连接到其他数据，还是只为临时表中的每个 ID 插入一次。如果是后者，这可能很少用于CROSS JOIN：

insert into ItemOrganisationSources
    select i.ByLineID, t.ID, i.SourceTypeID
    from ItemOrganisationSources AS i
    cross join #TempTable AS t --cross join instead of inner join
    where i.ItemOrganisationID in (
        select ID from @itemOrganisationIDsToBeDuplicated)

Answer 2

    insert into ItemOrganisationSources
    select ByLineID, TT.ID, SourceTypeID
    from ItemOrganisationSources IO JOIN
        @TempTable TT ON TT.ID = IO.ItemOrganisationID