I tried "SELECT" MYSQL syntax below using MySQL Query Browser, work normally. When I used this syntax into dtTable.Select(), error is "Syntax error on expression".
Dim dtTable As DataTable = MyDataset.Tables("machine")
Dim sql As String = String.Format("SELECT product_name, operator_name, totalizer_name
FROM product, operator, totalizer_type, machine
[code].....
I got a SQL statement where am selecting from an access database in vb but I get this error; "syntax error in query expression select sum(brought_qtty)" when I run my program. I imagine am doing the right thing but seems am not. How can I adjust this select? The code is below:
"select distinct(brought_price) as [Price], select sum(brought_qtty) as [Ordinary] from brought_coffee where " & _"coffee_grade=O, select sum(brought_qtty) as [Premium] from brought_coffee where" & _"coffee_grade=P, sum(brought_qtty) as [Total Qtty]" & _", sum(brought_paid) as [paid], " & _"sum(brought_bal) as [Balance]" & _"from brought_coffee, farmer where brought_date=#" & dtc.Text.Trim & "# and farmer_centre='" & cc.Text.Trim & _"' and farmer.farmer_num=brought_coffee.farmer_num"
I am trying to select a row in a datatable using the datatable.select method as described in the help files. There are several examples and here is a typical one: Private Sub GetRowsByFilter() Dim t As DataTable t = DataSet1.Tables("Orders") ' Presuming the DataTable has a column named Date. Dim strExpr As String strExpr = "Date > '1/1/00'" Dim foundRows() As DataRow ' Use the Select method to find all rows matching the filter.foundRows = t.Select(strExpr) Dim i As Integer ' Print column 0 of each returned row. For i = 0 to foundRows.GetUpperBound(0) Console.WriteLine(foundRows(i)(0)) Next i End Sub The intellisense comes up with an error on the 'select' line: "value of type '1-dimensional array of system.data.datarow' cannot be converted to 'system.data.datarow'
View 5 RepliesI have a LINQ to sql statement that joins 2 tables. I would like to add a order by clause on one of the columns. However the order by clause does not seem to take effect at all. right syntax in VB.net to achieve order by in the following:
Dim query = From dtIt In dbsomecontext.mytable
Join dtIl In dbsomecontext.anothertable On dtIt.ItemID Equals dtIl.ItemID
Where dtIl.IsAvailable = True
Order By dtIt.manufacturer
[Code]...
It is possible to check two different MySQL tables from the same sub?
For instance:
Dim Connection As MySqlConnection
Connection = New MySqlConnection
Connection.ConnectionString = "server=server; user id=userid; password=password; database=database"
Try
Connection.Open()
[Code]...
What I'm trying to get is something like an "or" function. If TextBox1.Text isn't in the database, then check if TextBox2.Text or TextBox3.Text is in the database.
I'm using the following code to read values, from a parallel port. Can I check for multiple cases by using 'and'? [Code]
View 10 RepliesI keep getting an error saying "there is an error in your sql syntax." when i use this sql statement:SELECT * FROM gsm_oceanwide_integrationEDIT:To put this in context heres the code im using this query statement in (VB.net):
Dim con As MySqlConnection = New MySqlConnection("Data Source=" & frmLogin.txtserver.Text & ";Database=stratocast;User ID=" & frmLogin.txtusername.Text & ";Password=" & frmLogin.txtpassword.Text & ";")
[code]......
in below code there is syntax error in from Clause but i think every thing looks fine iam using access database thx and relation is fine between thes two table
Public Function GetGridData() As DataTable
Dim dt As New DataTable
Try
[code].....
I'm using OLEDB to connect to an MSAccess database and would like to know which is the correct syntax to get a value from the database and store it into a variable. I'm using the following syntax but it is not working: getStock = "SELECT Stock INTO " & stkActual & " FROM PECAS WHERE PECA_ID = " & Val(Me.PECA_IDTextBox.Text)
View 4 RepliesI'm writing a program for Employees Management and i need to automatically generate a Payroll for each one then calculate some things and save it to another table.
I know how to calculate and save. I just need to get all the ID column of all rows in my Employees table, and select each Employee ID one by one in order to calculate each payroll automatically.
I have a database table that holds order information and saves the current gold price (world price) automatically at the time of entryif i look back on the table, and the saved gold price has a difference of the current gold price of + 100 i want to show that in a report
View 1 RepliesHow to use Select Case in reading rows in a table in mySQL? by not using the username of the user.
View 1 RepliesI need this for displaying in my crystal report here's my
cmd.CommandText = "Select * from pos where date= '" & datetimepicker1.text"'"
and nothing displays on my crystal report, I need the right query for that...the field value is DATE...I need the conversion for the 1/11/2001 format from date time picker to 2001-1-11 in DATE field
I need this for displaying in my crystal report here's my
cmd.CommandText = "Select * from pos where date= '" & datetimepicker1.text"'"
and nothing displays on my crystal report, I need the right quert for that...
My DATE field always display with time in vb.net is there a select query to format it into yyyy-MM-dd?
View 3 RepliesIm trying to fumble my way through selecting data from a mysql table and populating it to a combo box. I feel Im almost there, could someone look over my code and see whats going wrong?
Private Sub ComboBox1_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ComboBox1.SelectedIndexChanged
Dim con As New MySqlConnection
[Code].....
I'm having a problem with Dim query As New MySqlCommand("Select count(*)....") I would like to take the variable query and do an If query <> 1 Then statement on it. Is this possible or is there a completely other way to go about this comparing the contents of a MySQL select statement. I'm rather new to Visual Basic.
View 1 RepliesI am trying to clean up my code a bit.
I made the following function:
Public Sub sqlUpdate(ByVal table As String, ByVal column As String, ByVal var1 As String, ByVal column1 As String, ByVal var2 As String)
Public CN As New MySqlConnection
Public cmd As New MySqlCommand
[CODE]...
Which is fine, if I want to use mysql update all I have to do is call something like: sqlUpdate("test", "test", 0, "test", test) I was wondering if I could do the same with the SELECT statement and make a function. I cant think of a way to do it though...
sqlConnect()
Dim cmd As New MySqlCommand
With cmd
.CommandText = "SELECT * FROM users WHERE username=""" & lblAccountName.Text & """"
[CODE]...
The data I would want to extract would be different every time.
I'm started my project and here is my code.
con.Close()
con.Open()
com.CommandText = "SELECT * from math.questions where number ORDER by rand() limit 1"
[code].....
I've just switched from classic ASP to .net and I always used the following to SELECT, INSERT, UPDATE and DELETE from my MySQL databases:
' Create db connection
Function dbConn()
Set objConn = Server.CreateObject("ADODB.Connection")
objConn.Open "driver=x;Server=x;Port=x;Option=x;Database=x;Uid=x;Pwd=x"
[code]....
And to insert, update or delete I'd use:
Call SQL(1,"DELETE FROM Users WHERE UserID = 1")
anyone knows the query of selecting from monthname and year(September 2011) from mysql database DATE format(yyyy-MM-dd)
View 1 RepliesI need this for displaying in my crystal report here's my code:
Code: cmd.CommandText = "Select * from pos where date= '" & datetimepicker1.text"'" and nothing displays on my crystal report, I need the right query for that...the field value is DATE...I need the conversion for the 1/11/2001 format from date time picker to 2001-1-11 in DATE field
I'm using the following select statement to pull rows of data and display them in a datagrid.[code]This displays sometimes 5,000 different rows of data with one of the columns being time. Their times are something along the lines of 6:08, 6:09, etc. Is there a way I can show only 1 row for all times between 6-6:59?[code]
View 1 RepliesI have a datetime picker which format is yyyy-MM(2011-09) and I need to choose all the records of a particular month, I use this like query but doesn't display anything
[Code]...
I have this MySQL Query glitch in my VB.NET program. Here is the query in VB.NET:
"SELECT Points FROM user WHERE Username = '" & UsernameText.Text & "';"
It will select the points column from the user table from the Username they entered. When I deploy this it will set the value for points to 0 on their account. I'm not even inserting anything in.
IT STILL GIVES A MSGBOX IF I SELECT THE CHECKBOX BOX OR NOT ....My code below will redirect to Google in both conditions: If the user selects the checkbox, then it will redirect to www.google.com, but if a user forgets to check the checkbox then it shows the msg box with an ok button. When I click on ok it should redirect to www.google.com
I want When a user forgets to check any of the checkboxes to show a msgbox with an ok button and stay on the same page. Otherwise if user selects any of the checkboxes then redirect to google
[code]...
i am trying to auto select the email value from a 2nd cbobox when the user selects a name from the first cbobox using the first cbobox's index. (the values all line up with each other just fine)This is my current code:
Private Sub cmbAnalyst_SelectedIndexChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles cmbAnalyst.SelectedIndexChanged
theAName = cmbAnalyst.Text
[code].....
I have two drop down. SelCurrentManuf and selCurrentModel. I want the option in selCurrentModel to change depending on the option selected in selCurrentManuf. How do i do it?
<asp:DropDownList runat="server" ID="selCurrentManuf"></asp:DropDownList>
<asp:DropDownList runat="server" ID="selCurrentModel"></asp:DropDownList>
This is how i am currently populating selCurrentModel
Public Sub PopulateCurrentModel()
Dim mySelectQuery As String = "SELECT * FROM Model where ManufID = "+ selCurrentManuf.Text+";"
Dim myConnection As New MySqlConnection(Session("localConn"))
[Code]...
but it only populates the first selected manuf, and doesnt change after
Private Sub selCurrentManuf_SelectedIndexChanged(ByVal sender As System.Object, _
ByVal e As System.EventArgs) Handles selCurrentManuf.SelectedIndexChanged
PopulateCurrentModel()
End Sub
Unable to select multiple column in datatable
Code:
Dim Activitydtb As DataTable = DirectCast(ViewState("TalentcharacterActivty"), DataTable)
grdviewactivity.DataSource = Activitydtb.Select("SELECT
[Code].....
I need to set a select back to it's default value after it's been changed based on certain conditions.
View 2 Replies