在临时表上查询时无效的表或对象（普及型SQL）

Question

I have a SP that inserts records into a temp table, then selects the records and returns them. The SQL is this.

I troubleshot it by removing the INSERT INTO statement, and minimizing the SQL. The culprit is the SELECT * FROM #Worklist1. No idea why this does not work. I upgraded (just now) to latest version of Pervasive server ver 10 if that helps, but this issue was in 10.3 and its still there. Must be missing something.

CREATE PROCEDURE "Connect_Workflow"(
     :StartDate DATETIME, :EndDate DATETIME)
     RETURNS(Patient varchar(100) , 
        AccessionNo varchar(25)  
        );
BEGIN
    CREATE TABLE #WorkFlow1
        (Patient varchar(100) null, 
        AccessionNo varchar(25) null 
    );  
    INSERT INTO #Workflow1(
      SELECT 
        rtrim(p.LastName),--+ '^' + rtrim(p.FirstName) + isnull('^' + rtrim(p.Initial), ''),
        v.VisitID   -- equiv to EncounterID
    FROM visit v
    join patient p on v.patientnumber = p.patientnumber
    WHERE v.VisitYY = '99'
    );

    SELECT * FROM #WorkFlow1;
    DROP TABLE #Workflow1;


END

Update: After commenting out the SELECT * FROM #Worklist1; it still gives a invalid table error. If I remove the INSERT INTO and the SELECT * then finally the error is gone. Must be error in referencing the table.

Answer 1

Remove the DROP TABLE #Workflow1; from your query.
I believe it's dropping the table before the SP returns the data.

Answer 2

Okay i figured it out. Although the procedure should work fine, in fact Pervasive recommends something like this. use SELECT INTO

CREATE PROCEDURE "Connect_Workflow"(
     :StartDate DATETIME, :EndDate DATETIME)
     RETURNS(Patient varchar(100) , 
        AccessionNo varchar(25)  
        );
BEGIN
    SELECT 
        rtrim(p.LastName),--+ '^' + rtrim(p.FirstName) + isnull('^' + rtrim(p.Initial), ''),
        v.VisitID   -- equiv to EncounterID
    FROM visit v
    INTO #Workflow1
    join patient p on v.patientnumber = p.patientnumber
    WHERE v.VisitYY = '99'
    );
    SELECT * FROM #WorkFlow1;
END