res,err:=db.Query("SELECT GROUP_CONCAT(COLUMN_NAME) from information_schema.COLUMNS where TABLE_SCHEMA='mysql' and TABLE_NAME='user' and COLUMN_NAME like '%_priv'")
res,err:=db.Query("SELECT GROUP_CONCAT(COLUMN_NAME) from information_schema.COLUMNS where TABLE_SCHEMA='mysql' and TABLE_NAME='user' and COLUMN_NAME like '%%_priv'")