我有一个查询MS Access数据库的前端HTML页面。
HTML:
<input class="textbox" id="searchValue" maxlength="100" name="KeywordSearch" onclick="this.value='';" size="50" type="text" value="Enter Your Keyword Here" />
<input class="textbox" id="ForCLNo" name="CLNum" type="text" onclick="this.value='';" size="25" type="text" value="CL Number"/>
<input class="button" name="Search" onclick="searchEngineSearch();" type="button" value="Search" /></p>
想要执行此查询:
SELECT * FROM MasterTable where CLNo = test1 AND Query = test2;
对于查询SELECT * FROM MasterTable where Query LIKE test2
,我创建了ADODB对象,如下所示:
var adVarWChar = 202;
var adParamInput = 1;
var pad = "C:\\Users\\Rik\\Desktop\\Project\\MyTable.accdb";
var cn = new ActiveXObject("ADODB.Connection");
var strConn = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" + pad;
cn.Open(strConn);
var cm = new ActiveXObject("ADODB.Command");
cm.ActiveConnection = cn;
cm.CommandText = "SELECT * FROM MasterTable where Query LIKE test2";
cm.Parameters.Append(cm.CreateParameter(
"test2",
adVarWChar,
adParamInput,
255,
"%" + document.getElementById("searchValue").value + "%"));
var rs = cm.Execute();
并获得正确的结果。
不确定如何重写cm.Parameters.Append(cm.CreateParameter())函数以在SQL查询[SELECT * FROM MasterTable where CLNo = test1 AND Query = test2;
]中合并多个WHERE条件。
请帮助:)
答案 0 :(得分:0)
您已经在Parameters集合中创建了一个参数......您只需再创建一个参数:
cm.CommandText = "SELECT * FROM MasterTable where Query LIKE test1 OR Query LIKE Test2";
cm.Parameters.Append(cm.CreateParameter(
"test1",
adVarWChar,
adParamInput,
255,
"%" + document.getElementById("searchValue").value + "%"));
cm.Parameters.Append(cm.CreateParameter(
"test2",
adVarWChar,
adParamInput,
255,
"%" + document.getElementById("searchValue").value + "%"));
var rs = cm.Execute();
cm.Parameters
是一个集合,这意味着它能够保存任何合理数量的项目类型。对于上面的每个参数代码,您将新创建的参数附加到集合中。然后使用整个集合来解析SQL语句。