Question

在过程中，我需要生成两个或多个查询，从而生成相同的列，并将结果行合并到一个返回表中。实施例

CREATE PROC tmpProc
AS
BEGIN

  -- Making first query
  SELECT * INTO #resultTable FROM tableOne;

  -- Making second query, resulting columns are totally the same
  SELECT * INTO #resultTable FROM tableTwo;

  -- Return rowset from temporary table
  SELECT * From #resultTable;

END

但是这种类型的过程失败了，因为There is already an object named #resultTable in the database

Answer 1

如果两个表中的列相同，这将有效。

CREATE PROC tmpProc
AS
BEGIN

  -- Making first query
  SELECT *  FROM tableOne;

  UNION ALL
  SELECT *  FROM tableTwo;

END

Answer 2

CREATE PROC tmpProc
AS
BEGIN

  -- Making first query
  SELECT * INTO #resultTable FROM tableOne;

  -- Making second query, resulting columns are totally the same
    INSERT INTO #resultTable SELECT * FROM tableTwo;

  -- Return rowset from temporary table
  SELECT * From #resultTable;

END

Answer 3

以下是两个样本：

    IF OBJECT_ID('tempdb..#resultTable') IS NOT NULL DROP TABLE #resultTable
    ------   1  use insert into select---------------------
    SELECT * INTO #resultTable FROM tableOne;
    INSERT INTO  #resultTable  SELECT * FROM tableTwo
    ------   1  use union ---------------------
    SELECT * INTO #resultTable FROM (
        SELECT * FROM  tableOne 
        UNION ALL
        SELECT * FROM tableTwo
   ) AS t

Answer 4

试试这个

CREATE PROC tmpProc
AS
BEGIN

  select * into #resultTable from (

  SELECT col1,col2,col3...coln FROM tableOne;

  union all

  SELECT col1,col2,col3...coln FROM tableTwo;
  ) as a

  SELECT * From #resultTable;

 END

将select的结果插入到程序中的临时表中

4 个答案: