vb.net INSERT CURDATE（）到MySQL问题

Question

In a windows application I have a query that im trying to insert the current date on my mysql database

query below:

SqlVentaCasas1 = "INSERT INTO VentaCasasHistory (ID, Direccion, Estatus, Precio, " & _
                                "NumeroDias, FechaHoy, Agente, Compania, Unidad, Ciudad ) VALUES ('" & _
                                AddIDCasas2 & "','" & AddDireccionCasas2 & "','" & AddEstatusCasas2 & "'," & AddPrecioCasas2 & ", 0, CURDATE(), '" & AgenteNameCasas2 & "','" & AgenteCompaniaCasas2 & "', '" & AddUnidadCasas2 & "', '" & AddCiudadCasas2 & "' );"


                        CommandVentaCasas1 = New MySqlCommand(SqlVentaCasas1, con)
                        CommandVentaCasas1.CommandType = CommandType.Text
                        CommandVentaCasas1.ExecuteNonQuery()

when i input the values that i want to insert into mysql everything runs smoothly except that when i check the database for the date entered i find myself with the 0000-00-00

on the other hand, when i run the same query from PHPmyAdmin

INSERT INTO `VentaCasasHistory`(`ID`, `Direccion`, `Estatus`, `Precio`, `NumeroDias`, `FechaHoy`, `Agente`, `Compania`, `Unidad`, `Ciudad`) VALUES ([String1],[String2],[String3],[Integer1],[Integer2],CURDATE(),[String4],[String5],[String6],[String7])

where FechaHoy is CURDATE() is does insert correctly the date that should be.

I cant seem to find what is the problem, As i understand it will only insert 0000-00-00 if there is something wrong with the date when been entered.

the reason i kept both queries "identical" was to understand what im doing wrong and I know that they can be subject to SQL injection.

your help would be very appreciated.

Leo P.

this is the code i have for the last piece that you told me.

Dim StringDate As String

    StringDate = Date.Today.ToString("yyyy-MM-dd")

SqlVentaCasas1 = "INSERT INTO VentaCasasHistory (ID, Direccion, Estatus, Precio, " & _
                                "NumeroDias, FechaHoy, Agente, Compania, Unidad, Ciudad ) VALUES ('" & _
                                AddIDCasas2 & "','" & AddDireccionCasas2 & "','" & AddEstatusCasas2 & "'," & AddPrecioCasas2 & ", 0, STR_TO_DATE('" & StringDate & "', GET_FORMAT(DATE,'ISO')), '" & AgenteNameCasas2 & "','" & AgenteCompaniaCasas2 & "', '" & AddUnidadCasas2 & "', '" & AddCiudadCasas2 & "' );"

unfortunately it does not work and i still get the 0000-00-00.

Answer 1

CURDATE() should really be specified as default value used in CREATE TABLE . In other words, you don't need to put it in as part of a query as when you insert a new record the field with default value set to CURDATE() will have the date automatically inserted.

F.ex:

CREATE TABLE MyTable
(
    ID int NOT NULL,
    MyName varchar(30) NOT NULL,
    MyDate datetime NOT NULL DEFAULT CURDATE(),
    PRIMARY KEY (ID)
)

INSERT INTO MyTable (MyName) VALUES ('Epistemex')

Will set the MyDate field to CURDATE() .

Hope this helps.