orcale sql中 这段代码什么意思
UPDATE T_APPLY_INFO
SET APPLY_STATUS = CASE WHEN :applyStatus IS NULL THEN APPLY_STATUS ELSE :applyStatus END
, APPLY_STATUS_DISPLAY = CASE WHEN :applyStatusDisplay IS NULL THEN APPLY_STATUS_DISPLAY ELSE :applyStatusDisplay END
, UPD_USER = :updUser
, UPD_DATE = SYSDATE
WHERE APPLY_NO = :applyNo