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ÎÒ×Ô¼ºÐ´µÄsqlÓï¾äÆ´½ÓÈçÏÂ:
C# code:

string strsql = "select * from stu where ";
if (stuNum != "")
{
strsql += "stuNum like '%" + stuNum + "%' and ";
}
else
{
strsql += "stuNum like '%%' and ";
}
if (stuName != "")
{
strsql += "stuName ='" + stuName + "' and ";
}
if (beginDate != "")
{
strsql += "createdate>=to_date('" + beginDate + " 00:00:00 " + "','yyyy-mm-dd hh24:mi:ss')" + " and ";
}
if (endDate != "")
{
strsql += "createdate<=to_date('" + endDate + " 23:59:59 " + "','yyyy-mm-dd hh24:mi:ss')" + " and ";
}
if (type != "")
{
strsql += "type ='" + type + "' and ";
}
if (consumer != "")
{
strsql += &qu


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