My asp (and js) code works good but i don't know the exact command to INSERT a record into a DB. I'm able to "read", "update" and "delete" from db, but not insert!
(db server values are example)
var Cn = new ActiveXObject("ADODB.Connection");
Cn.Open("server=1.1.1.1;db=dbserver; DRIVER={MySQL ODBC 3.51 Driver};uid=login;pwd=password");
var value1 = new String(Request.Form("value1"));
var value1 = new String(Request.Form("value1"));
var value1 = new String(Request.Form("value1"));
Cn.Execte("INSERT INTO table (col1,col2,col3) VALUES (value1,value2,value3)");
Cn.Close();
Response.Redirect("home.asp");
Can someone help me?
thanks!
You will have concatenate the values into the sql string like :
Cn.Execute("INSERT INTO table (col1,col2,col3) VALUES ('" + value1 + "','" + value2 + "','" + value3 + "')");
The ' are used assuming the columns in the db are strings, otherwise you don't need it.
If value paramaters are string - nvarchar, text etc.
You must enclose them into quotes. Your statement must look like this.
Cn.Execute("INSERT INTO table (col1,col2,col3) VALUES (value1,'" + value2 + "','" + value3 + "')");
I assumed col2 and col3 are string types and col1 isn't.
Related
We are working on an ubuntu server, where we have installed node-red. What we want is to take data from one table on our MySQL Database, and then move it to another table.
Our flow looks like this:
Our 'Select Tolerance' node contains:
msg.topic = "SELECT * FROM Tolerance";
return msg;
Simple code, which selects data from our database. If we connect a debug node like this:
We then see an output looking like this:
We want to pick all data, so we need to go through all objects in the array and make sure to take all values and send them over to our new database table. We're using the 'New Tolerance' node to do so, and 'New Tolerance' contains:
var i;
var secured = 1;
for (i = 0; i < msg.payload.length; i++) {
var time_start = msg.payload[i].time_start
var time_end = msg.payload[i].time_end
var temperatur_lpn = msg.payload[i].temperatur_lpn
var temperatur_rising = msg.payload[i].temperatur_rising
var temperatur_weather = msg.payload[i].temperatur_weather
var temp_compare_WL = msg.payload[i].temp_compare_WL
var temp_compare_WR = msg.payload[i].temp_compare_WR
var out = "INSERT INTO Sunrise_Tolerance (time_start, time_end, temperatur_lpn, temperatur_rising, temperatur_weather, temp_compare_WL, temp_compare_WR, secured)"
out = out + " VALUES ('" + time_start + "','" + time_end + "','" + temperatur_lpn + "','" + temperatur_rising + "','" + temperatur_weather + "','" + temp_compare_WL + "','" + temp_compare_WR + "','" + secured + "');"
msg.topic = out;
return msg;
}
The problem is that we only receive the first row of data (first object in the array) and not the rest. Can anyone figure out why we dont receive all data, but only the first?
The problem comes the fact you have a return statement inside the for loop.
That will exit the function the first time it reaches that point - so your loop never loops.
If you want to send multiple messages you should use node.send(msg); in your for loop. The only thing to watch out for is if you call node.send with the same object multiple times, as the message is passed by reference, you would get some odd side-effects. As you only care about msg.topic in this instance, you can afford to create a new message object each time.
So, instead of the return msg statement, you could do:
for (i ... ) {
var out = "INSERT ...";
...
node.send({topic: out});
}
// Return without any arguments so no further messages are sent.
return;
I am trying to do nested queries in order to insert into a table based apon an earlier select statement. However I am running into trouble because my first select statement selects and AVG() of a row. I have not been able to find a way to get the result row object that I have to select the property 'AVG(row)' instead of the trying to call .AVG() on something. The code is below and any help would be appreciated.
var sql1 = 'SELECT tropename, AVG(criticScore) FROM tropesWithScore where tropeName = '+ '\'' + trope + '\'';
//console.log(sql1)
con.query(sql1, function (err1, result1) {
if (err1) throw err1;
Object.keys(result1).forEach(function(key) {
var row2 = result1[key];
var trope2 = row.tropeName;
console.log(trope2)
var avgScore = row.AVG(criticScore)
console.log(avgScore)
sql = 'INSERT INTO TropesWithAverageScores (tropeName, criticScore) VALUES (' + trope2 + ',' + '\'' + avgScore + ')';
///console.log(sql)
con.query(sql, function (err, result) {
if (err) {}
});
});
});
Fixed it myself,
first, I was getting the attribute on row, not row2 object.
Secondly I simplified it by aliasing my first select state, so it now reads
SELECT tropename, AVG(criticScore) as avgCS FROM tropesWithScore where tropeName = '+ '\'' + trope + '\'';
Hope this helps someone else!
This is my sql query
"select * from applicant where email =ABC.Com"
I want table name, colum name and value after where clause dynamic in form of variables there. Can you tell me the right syntax? I have tried this so far
"select * from " tableNameVariable+"where "columnNameVariable+"= "inputedEmailVariable
now this query is giving an error near =inputedEmailVariable.
Note : I want to use this string in nodejs function. Please tell me right syntax?
Try:
"select * from " + tableNameVariable + " where " + columnNameVariable + " = '" + inputedEmailVariable + "'"
You're missing some + operators, and also missing a space before where.
var sql = "select * from " + tableNameVariable + " where " + columnNameVariable + " = " + inputedEmailVariable
You should be very careful if the variables are coming from user input, since this can result in SQL injection. Make sure the variables contain table and column values that they're allowed to access.
And if you're compareing the column with a string, you'll need quotes around the string. But it would be better to use a placeholder at that point, rather than concatenating the variable.
I have a function that I need to use for filtering table rows:
setFilterString("Filter");
But I have a problem. I can set it to
setFilterString("OrderID = 5");
and it will filter out row where OrderID is equal to 5 but if i try using a variable that has a value taken before like this
setFilterString("OrderID = vOrderID");
I get error "Invalid column name 'vOrderID'." (as vOrderID is variable and not a column, I guess)
I have seen somewhere in filter section inputting something like this ("OrderID = '" & vOrderID & "'") but it doesn't have any result at all for me. Doesn't even throw any error in the console.
JavaScript assumes you are just passing a string to the function. If you want to use the variable, you should try this:
setFilterString("OrderID = '" + vOrderID + "'"); // Results in OrderID = '5'
or
setFilterString("OrderID = " + vOrderID); // Results in OrderID = 5
depending on the body of your function.
Use + instead of &: setFilterString("OrderID = " + vOrderID) should work.
Use "+" for merge strings:
setFilterString("OrderID = " + vOrderID)
You can also try to use ${idvOrderID} inside string:
setFilterString("OrderID = ${vOrderID}")
Or:
setFilterString(sprintf("OrderID = %s", vOrderID))
Remember about difference between ' and "
I'm saving string that represents the URL in a session variable from my code behind like this:
String mois = Request.QueryString["mois"].ToString();
String m = mois;
String moisnom = Request.QueryString["moisnom"].ToString();
String annee = Request.QueryString["annee"].ToString();
String dt = Request.QueryString["date"].ToString();
String user = Request.QueryString["user"].ToString();
String where = "jour.aspx?mois=" + mois + "&moisnom=" + moisnom + "&annee=" + annee + "&date=" + dt + "&user=" + user + "&cp=all" + "&usl=" + Request.QueryString["usl"].ToString();
Session["togo"] = where;
And then I try to get it like this in JavaScript like this:
var togo = '<%=Session["togo"]%>';
// i also tried this var togo ='#Session["togo"]';
var newPage = togo; // this should contain a string with the url to go to
But when I use it it uses it as a string here is what my URL looks like:
http://localhost:50311/<%=Session["togo"]%>
or
http://localhost:50311/#Session["togo"]
How else can I access the session variable or what am I doing wrong please?
EDIT:
like you suggested i already tried using the hidden field like this
yes i tried that but then i had this problem here is the definition of the hidden field
<input type="hidden" value="aa" id="myHiddenVar" runat="server"/>
then i tried giving it the value i need on click
String where = "jour.aspx?mois=" + mois + "&moisnom=" + moisnom + "&annee=" + annee + "&date=" + dt + "&user=" + user + "&cp=all" + "&usl=" + Request.QueryString["usl"].ToString();
myHiddenVar.Value= where;
and this is how i tried getting it from the js file
var togo = $('#myHiddenVar').val();
var newPage = togo;
but it takes the default value meaning "aa" as in value="aa" i gues cause the script is executed before the assignment of the variable any way how to reverse that order ?
After Session["togo"] = where;
save this Session["togo"] in hidden variable
hiddenVariable= Session["togo"];
Now in JS access that hiddenvariable:
suppose ID of hiddenvariable is "hdnxyz"
var togo = $('#hdnxyz').val();
var newPage = togo;
first of all session resides on server!!!!!!
If it is in different js file than you cant access it <%xyz%> i.e scriplet tags only work on aspx page...
so there is no way to access the session variable on client side..
instead assign your sessio9n value to a hidden variable and then access it using javascript
Write Session element in a asp:HiddenField and then read from it with your js code.