ÇëÎÊ,ÈçºÎ½«100ÍòÌõ¼Ç¼һ´Îµ½µ½excelÖÐ,3Q~~
×ö¸öÅжÏÓï¾ä£¬³¬¹ý65535¼´Ð½¨Ò»¸öеÄexcel~~
ÒýÓà ×ö¸öÅжÏÓï¾ä£¬³¬¹ý65535¼´Ð½¨Ò»¸öеÄexcel~~ ¿ÉÒÔÏêϸµãÂð?
excel×î¶àÖ»Ö§³Ö64kÐУ¿Õâ¸ö»¹ÕæÃ»×¢Òâ¡£¡£¡£¡£¡£¡£¡£¡£¡£
Delphi(Pascal) code:
c:=0;
q.first;
while not q.eof do
begin
inc(c);
if c>65535 then
begin
c:=1;
¹Ø±Õµ±Ç°excelÎļþ;
н¨Ò»¸öexcelÎļþ;
end;
µ¼È뵱ǰexcelÎļþ;
q.next;
end;
¹Ø±Õµ±Ç°excelÎļþ;
ÒýÓà excel×î¶àÖ»Ö§³Ö64kÐУ¿Õâ¸ö»¹ÕæÃ»×¢Òâ¡£¡£¡£¡£¡£¡£¡£¡£¡£ Delphi(Pascal) codec:=0; q.first;whilenot q.eofdobegin inc(c);if c>65535thenbegin c:=1; ¹Ø±Õµ±Ç°excelÎļþ; н¨Ò»¸öexcelÎļþ;end; µ¼È뵱ǰexcelÎļþ; q.next;end; ¹Ø±Õµ±Ç°excelÎļþ; ºÃÏñ2007²»»áÁË. ûÓÐ֤ʵ. ²»¹ý2000µÄÈ·Ö»Ö§³Ö65535 .
ÿ65KÐе¼³öµ½Ò»¸öExcel¿Õ°×Ò³ÖУ¬Ò»¸öExcelÎļþ¿ÉÒÔ½¨Á¢N¸ö¿Õ°×Ò³£¬Ö®ºó»¹¿ÉÒÔ½¨Á¢N¸öExcelÎļþ
¶àл,ÏÖÔÚ²éѯ¼¸°ÙÍòÌõÊý¾Ý,·¢ÏÖ "temporary table resource limit" ÕâÑùµÄ´íÎó,ÎÒÃÇÓõÄÊǵ¥·þÎñÆ÷,¾ÀíÈÃÎÒÓÃolapÀ´´¦Àí,,ѧϰÖУ¬´ó¼ÒÄܲ»ÄÜÌṩһµãÕâ·½ÃæµÄÊý¾Ý°¡?
65536Ìõ¼Ç¼²»ÊÇDelphiµÄÏÞÖÆ,¶øÊÇExcelµÄÏÞÖÆ.
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VC ¿ØÖÆÌ¨³ÌÐò: #include <iostream> using namespace std; int main() { const int def_buffer = 1024 * 4; DWORD t; BYTE b[def_buffer]; memset(b, 0, sizeof(b)); PBYTE p; t = GetTickC ......