如何在使用光标的现有表中插入记录

Question

Declare Userrole_Cursor Cursor For 
Select (User_Role_id, 
    Pos_entity_Id, 
    User_role_code, 
    User_Role_description, 
    Print_Sequence, 
    Update_date, 
    Tx_id, 
    Add_date, 
    Add_Username, 
    Update_Username, 
    Active_Flag) from User_Role_Tb where pos_entity_id = (pos_entity_id) 

    Open Cursor 

    FETCH NEXT FROM UserRole_Cursor into 

以上是我编写的光标创建，现在需要在所有提到的列中插入一个User_role_tb。请帮忙。这是我第一次使用游标。

Answer 1

这个简单的例子可以帮助你

-- assume this is your table 
create table #tmp (MyDbName varchar(100), MyDbId int, MyStatus int) 

-- you need to have a variable for each field. 
DECLARE @MyDbName varchar(100) 
DECLARE @MyDbId int 
DECLARE @MyDbStatus int 

DECLARE db_cursor CURSOR FOR 
    SELECT name, [dbid], [status] 
    FROM master.dbo.sysdatabases 

OPEN db_cursor 
FETCH NEXT FROM db_cursor INTO @MyDbName, @MyDbId, @MyDbStatus  

WHILE @@FETCH_STATUS = 0 
BEGIN 
    -- insert data into your table using variables 
    insert into #tmp (MyDbName, MyDbId, MyStatus) 
    values (@MyDbName, @MyDbId, @MyDbStatus) 

    -- fetch next row from cursor 
    FETCH NEXT FROM db_cursor INTO @MyDbName, @MyDbId, @MyDbStatus  
END 

CLOSE db_cursor 
DEALLOCATE db_cursor 

-- select from your table to make sure data is there 
select * from #tmp