select assay_item, item_name from sys_assay_item
insert into sys_assay_item
assay_item,item_name,#{assayItem},#{itemName},
update sys_assay_item
item_name = #{itemName},
where assay_item = #{assayItem}
delete from sys_assay_item where assay_item = #{assayItem}
delete from sys_assay_item where assay_item in
#{assayItem}