Quering all the rows in Azure table Storage

Question

I am trying to get a list of all entities inside my Azure table. How should I be writing this query in c#?

Answer 1

Refer the following code:

var acc = new CloudStorageAccount(
                         new StorageCredentials("account name", "account key"), false);
var tableClient = acc.CreateCloudTableClient();
var table = tableClient.GetTableReference("table name");
var entities = table.ExecuteQuery(new TableQuery<MyEntity>()).ToList();

However please keep in mind that table service returns a maximum of 1000 entities in a single call to it. If there're more than 1000 entities available in your table, it returns a continuation token which can be used to fetch next set of entities.

So, a better approach would be to use ExecuteQuerySegmented method and have your application deal with the token. Here's the sample code to do so:

var acc = new CloudStorageAccount(
                         new StorageCredentials("account name", "account key"), false);
var tableClient = acc.CreateCloudTableClient();
var table = tableClient.GetTableReference("table name");
TableContinuationToken token = null;
var entities = new List<MyEntity>();
do
{
    var queryResult = table.ExecuteQuerySegmented(new TableQuery<MyEntity>(), token);
    entities.AddRange(queryResult.Results);
    token = queryResult.ContinuationToken;
} while (token != null);

Hope it helps!

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