while em using str in my query its showing error, like

select slno,entrydate,goals,kpi,weightage,goals_review_date,reviewcomments,reviewedby,reviewdate

from GOALSDTL

union

select str((slno,entrydate,goals,kpi,weightage,goals_review_date,reviewcomments,reviewedby,reviewdate),5,2)

from GOALSDTL_History

error:

doest convert date into int