最近有些闲,看完了concept突然有种空虚的感觉。闲话不多说。用PLSQL写了一个打印日历的功能。create or replace package display_date is
procedure display_spec_mon (year number , month number) ;
end ; create or replace package body display_date is
type t_conv_mon is table of varchar2(10) ;
conv_mon t_conv_mon := t_conv_mon() ;
procedure display_title (year number , month number)
is
begin
dbms_output.put_line(year||"."||conv_mon(month)) ;
dbms_output.put_line(lpad(" ",21,"-")) ;
dbms_output.put_line("Su Mo Tu We Th Fr Sa");
end ;
procedure display_spec_mon (year number , month number)
is
current_mon date ;
current_line varchar2(21) ;
begin
-- dbms_output.put_line (year||lpad(month||"",2,"0")||"01") ;
display_title (year,month) ;
current_mon := to_date(year||lpad(month||"",2,"0")||"01","yyyymmdd") ;
for i in 1 .. (add_months(current_mon,1)-current_mon) loop
if i = 1 then
current_line := current_line || (lpad(" ",(to_char(current_mon+i-1,"D")-1)*3,"-- "));
end if ;
current_line := current_line || rpad(i||"",3," ");
if length(current_line)>=21 then
dbms_output.put_line(current_line) ;
current_line := "" ;
end if ;
end loop ;
dbms_output.put_line(current_line) ;
end ;
begin
conv_mon.extend(12);
conv_mon(1) := "January" ;
conv_mon(2) := "February" ;
conv_mon(3) := "Marcy" ;
conv_mon(4) := "April" ;
conv_mon(5) := "May" ;
conv_mon(6) := "June" ;
conv_mon(7) := "July" ;
conv_mon(8) := "August" ;
conv_mon(9) := "September" ;
conv_mon(10) := "October" ;
conv_mon(11) := "November" ;
conv_mon(12) := "December" ;
end ; 执行结果:_sys@DAVID> exec display_date.display_spec_mon(2013,10) ;
2013.October
--------------------
Su Mo Tu We Th Fr Sa
-- -- 1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
27 28 29 30 31PL/SQL procedure successfully completed._sys@DAVID> exec display_date.display_spec_mon(2012,12) ;
2012.December
--------------------
Su Mo Tu We Th Fr Sa
-- -- -- -- -- -- 1
2 3 4 5 6 7 8
9 10 11 12 13 14 15
16 17 18 19 20 21 22
23 24 25 26 27 28 29
30 31PL/SQL procedure successfully completed.Oracle Database 中 B*Tree 索引内部维护Oracle Text 全文索引 几种典型应用场景相关资讯 plsql PLSQL使用
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