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-- create by zh
-- n ÊÇ×÷ÎïµÄʱ¼ä,x ÊÇÏ£ÍûÔÚ¼¸µã³ÉÊì,·µ»Ø²¥ÖÖµÄʱ¼ä
with t as
(
select 64 n,9 x from dual union all
select 64 n,13 x from dual union all
select 64 n,17 x from dual union all
select 64 n,20 x from dual
)
select '³ÉÊìʱ¼ä:' || lpad(to_char(n),4,' ' ......