INSERT statement cannot contain a SELECT statement -sql server2012

问题

    declare @us table(name nvarchar(100),lastname nvarchar(100),UID bigint,available bit);
        declare
        @Name nvarchar(100),
        @lastname nvarchar(100),
        @UID bigint,
        @Avail bit

        insert into @us
        select @name=name,@lastname=lastname,@UID=UID,@Avail=available from Users where available='1'
 select * from @us

I got this error

An INSERT statement cannot contain a SELECT statement that assigns values to a variable.

I searched for this problem but many people used queries like this and they said there is no problem! i'm using sql server 2012, is it a deference between MSSQL2012 and MSSQL2008? and what is the best solution if I want to return a table from my Stored Procedures? what is wrong in my query?

回答1:

Based on the information provided in the question, the variables seem to be unnecessary. You can directly do INSERT...SELECT like so:

declare @us table(name nvarchar(100),lastname nvarchar(100),UID bigint,available bit);

insert into @us
select name,lastname,UID,available 
from Users 
where available='1'

select * from @us

回答2:

Alternate and complex way of doing the same task is the below one. Hope nobody likes this. Just I am showing we have one more alternative way.

declare @us table(name nvarchar(100),lastname nvarchar(100),UID bigint,available bit);
declare @Name nvarchar(100), @lastname nvarchar(100), @UID bigint,@Avail bit

DECLARE ALLRECORDS CURSOR FOR 
    SELECT name,lastname,UID,available from Users where available='1'

     OPEN ALLRECORDS
     FETCH NEXT FROM ALLRECORDS INTO @Name,@lastname,@UID,@Avail

        WHILE @@FETCH_STATUS = 0
        BEGIN
        INSERT INTO @us    
        SELECT @Name,@lastname,@UID,@Avail 

        FETCH NEXT FROM ALLRECORDS INTO @Name,@lastname,@UID,@Avail
        END
CLOSE ALLRECORDS
DEALLOCATE ALLRECORDS
SELECT * FROM @us

来源：https://stackoverflow.com/questions/25132481/insert-statement-cannot-contain-a-select-statement-sql-server2012