dataset

问题 ive hit a brick wall on what to do next to populate a combobox from a data set currently i have. my database is call "PID2db.mdb" and the table is called "Customer" string strCon = Properties.Settings.Default.PID2dbConnectionString; OleDbConnection conn = new OleDbConnection(strCon); try { conn.Open(); string strSql = "Select forename,surname from customer where [customerID] ='" + txtName.Text + "'"; OleDbDataAdapter adapter = new OleDbDataAdapter(new OleDbCommand(strSql, conn)); DataSet ds =

问题 Is there a way to search for public datasets on BigQuery? Related question about viewing datasets listed by default here. There is no way to search for public datasets which are not listed in the BQ GUI under 'bigquery-public-data' as mentioned here: https://stackoverflow.com/a/14969215. There is an older Reddit post listing many of the ones listed in the GUI here. There seems to be a separate list under fh-bigquery as seen here for a freebase dataset. What is this fh-bigquery designation?

问题 I have a DataTable that I am pulling from a DataSet. From the DataTable, I want to use the Where clause to return a particular row. I looked at "How can I select a row from a datatable using two variable values?" but I get an error "Cannot implicitly convert type 'System.Data.DataRow[]' to 'System.Data.DataRow'" I searched google, but could not find a solution. My code is: mySqlDataAdapter.Fill(myDataSet); DataTable dtTable = myDataSet.Tables[0]; DataRow dr = dtTable.Select("VendorID = " +

问题 I have a DataTable that I am pulling from a DataSet. From the DataTable, I want to use the Where clause to return a particular row. I looked at "How can I select a row from a datatable using two variable values?" but I get an error "Cannot implicitly convert type 'System.Data.DataRow[]' to 'System.Data.DataRow'" I searched google, but could not find a solution. My code is: mySqlDataAdapter.Fill(myDataSet); DataTable dtTable = myDataSet.Tables[0]; DataRow dr = dtTable.Select("VendorID = " +

问题 What exactly will this do? dataset = tf.data.Dataset.from_tensor_slices([0, 0, 0, 1, 1, 1, 2, 2, 2]) dataset.shuffle(buffer_size=5).repeat().batch(3) I've noticed several related questions but none of them answered exactly my concern. I'm confused with what shuffle(buffer_size) is doing. I understand it will take 5 first examples [0, 0, 0, 1, 1] into memory, but what will it do next with this buffer? And how does this buffer interact with repeat() and batch() ? 回答1: The way shuffle works is

问题 I have linked my DataGridView with a DataSet with all the values from one of my database tables. But what i want to do is filter my DataGridView to display certain values from my DataSet: For example: (Where EmployeeID = 4) , is there any way of doing this without changing my initial binding object? //Initial datasource dgv.DataSource = DataSet1.Table[0]; //Some filter code here to display DataSet1 where employeeID = 1 //Show these results in the dgv without changing the initial binding. 回答1:

问题 I am working with WPF, DataSet (connection is to SQL Server Express), XAML and C#. Visual Studio 2013 Express. I have created a DataSet called BankNoteBookDataSet from an existing SQL Server Express database named BankNoteBook. In the SQL database there is a table named Catalogue, and to keep it simple here, it has 2 fields: BNBID and CountryID. BNBID is the unique ID and Country ID field has a many to one relationship with another table named Country. The Country table has 2 fields:

问题 I am working with WPF, DataSet (connection is to SQL Server Express), XAML and C#. Visual Studio 2013 Express. I have created a DataSet called BankNoteBookDataSet from an existing SQL Server Express database named BankNoteBook. In the SQL database there is a table named Catalogue, and to keep it simple here, it has 2 fields: BNBID and CountryID. BNBID is the unique ID and Country ID field has a many to one relationship with another table named Country. The Country table has 2 fields:

问题 I have started with deep learning with Theano and Keras. However, for any program, I will have to load the dataset, and i'm not able to load any dataset. Even if I run these two lines:- from keras.datasets import cifar10 (X_train, y_train), (X_test, y_test) = cifar10.load_data() I even tried the above with minst dataset. Exact same error. I tried to run the commands one by one, the first import goes well. In the second command, it runs and python begins downloading. However, after a few

问题 I have started with deep learning with Theano and Keras. However, for any program, I will have to load the dataset, and i'm not able to load any dataset. Even if I run these two lines:- from keras.datasets import cifar10 (X_train, y_train), (X_test, y_test) = cifar10.load_data() I even tried the above with minst dataset. Exact same error. I tried to run the commands one by one, the first import goes well. In the second command, it runs and python begins downloading. However, after a few