tsql - SQL Server 2008 Column to Row Data -

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i have budget table in sql server database looks following:

create table #cols (    acctid int,     yr int,     pd01 numeric(15,2),     pd02 numeric(15,2),     pd03 numeric(15,2),            .           .           .    pd13 numeric(15,2),    primary key(acctid, yr));

i need take data in various columns , switch row based format table following:

create table #rows (   acctid int,    yr int,    pd int,    amt numeric(15,2),    primary key(acctid, yr, pd));

now run 13 sql statements this:

insert #rows select acctid, yr, 1, pd01 #cols;     .     .     . insert #rows select acctid, yr, 13, pd13 #cols;

but wondering if there more efficient/elegant way this?

another option unpivot

select acctid,yr,cast(right(pd,2) int) pd, amt #cols unpivot (amt pd in ([pd01],[pd02],[pd03],..., [pd13])) unp

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