触发从活动表中删除旧记录并插入到历史表中

Question

sql server 2008

May anyone share their expertise how to achieve the below scenario

I have two table. active and history both have same structure.

What I am trying to achieve, whenever new record insert to active table, whatever records existing in active table move to history.

I am trying to hold only current active records

I have a column called fetch date and if any record have fetch date not same as getdate must be moved to history table. those record should not present in Active table.

Thanks

Answer 1

you have several syntax error there.

I am merely correcting the syntax

CREATE PROCEDURE BACKUP_TB 
    @tbname varchar(MAX) 
AS 
 BEGIN 
    SET nocount ON; 
    DECLARE @query varchar(MAX) 
    SET @query = 'select * into '+ @tbname + '_backup from ' + @tbname + ''; 
    EXEC (@query) 
    SET nocount OFF; 
END 

few issues you should take note

1. SELECT INTO <table name> will create new table and insert the result. It will only works once. Then second time you run it, it will give error as the target table already existed. You should use pre-create all necessary tables and use insert into backup_table ( <column list> ) select <column list> from original_table

2. Avoid using SELECT * , it is best practice to specify the column name explicitly

3. If you have to use Dynamic SQL, do read up more about it. Example : The Curse and Blessings of Dynamic SQL . And take note of possible SQL Injection attack.