sql - How to search multiple columns with one variable -

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i want search 1 table, , multiple columns using 1 variable. code looks this:

select        lcustomerid, slastname, sfirstname, saddress1, saddress2,    scity, sstate, szipcode , @search expr1            customers (slastname = n'includes @search')  or    (sfirstname = n'includes @search')  ,   (sbarcode = n'includes @search')

i want include string not =

assuming meant have ors, , "i want include string" means want partial match (e.g. search "john" yields "johnson" , "rojohn"), looking keyword:

where slastname  n'%' + @search + '%'    or sfirstname n'%' + @search + '%'    or sbarcode   n'%' + @search + '%';

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