Creating Sdf File Programmatically

• Open Sdf File With Excel

Before we create a table in SSCE, you need to understand that SSCE only supports a subset of the data types provided in full SQL Server. The specific list is: bigint, integer, smallint, tinyint, bit, numeric (p, s), money, float, real, datetime, national character(n) (Synonym:nchar(n)), national character varying(n) (Synonym:nvarchar(n)), ntext, nchar, binary(n), varbinary(n), image, uniqueidentifier, ROWGUIDCOL, and IDENTITY (s, i).The last two, strictly speaking are not data types but properties of the data column. SSCE was designed to be small and lightweight (hence the Compact name). To keep it small, many of the datatypes were eliminated.A full list, with detailed explanations can be found at on the MSDN site: or.Now that you know what’s available, let’s talk about how to create a table. In keeping with it’s theme of compactness, SSCE doesn’t include classes for manipulating the structures inside a SSCE database directly. Instead, you have to do everything through SQL DDL (Data Definition Language) statements.

You know, Create Table, Drop Table, etc.The code below shows the fairly simple steps involved. First you need to open a connection to the database. You do this by creating a SqlCeConnection object and passing in the connection string. The connection string has the same format I described in my previous post on creating the database.Next, we create a string to hold some SQL ( sql), and create a SqlCeCommand object ( cmd). Finally we call the ExecuteNonQuery method of the command object to kick off the SQL.

Here’s the code, with some try / catch logic thrown in to trap for errors.RT @: Sneak Peek: UDStudio. Tools for debugging UD dashboards in @.RT @: The Sept. @ meetup is next week.

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Open Sdf File With Excel

This tutorial is part of a series about Gatsby’s data layer. Make sure you’ve gone through, and before continuing here. What’s in this tutorial?In the previous tutorial, you created a nice index page that queries markdownfiles and produces a list of blog post titles and excerpts. But you don’t want to just see excerpts, you want actual pages for yourmarkdown files.You could continue to create pages by placing React components in src/pages. However, you’llnow learn how to programmatically create pages from data.

Gatsby is notlimited to making pages from files like many static site generators. Gatsby letsyou use GraphQL to query your data and map the query results to pages—all at buildtime. This is a really powerful idea.

You’ll be exploring its implications andways to use it for the remainder of this part of the tutorial.Let’s get started. Creating slugs for pagesCreating new pages has two steps:. Generate the “path” or “slug” for the page. Create the page.Note: Often data sources will directly provide a slug or pathname for content — when working with one of those systems (e.g. A CMS), you don’t need to create the slugs yourself as you do with markdown files.To create your markdown pages, you’ll learn to use two Gatsby APIs:and.

These are two workhorse APIsyou’ll see used in many sites and plugins.We do our best to make Gatsby APIs simple to implement. To implement an API, you export a functionwith the name of the API from gatsby-node.js.So, here’s where you’ll do that.

In the root of your site, create a file namedgatsby-node.js. Then add the following. The function handles finding the parent File node along with creating theslug. Run the development server again and you should see logged to the terminaltwo slugs, one for each markdown file.Now you can add your new slugs directly onto the MarkdownRemark nodes. This ispowerful, as any data you add to nodes is available to query later with GraphQL.So, it’ll be easy to get the slug when it comes time to create the pages.To do so, you’ll use a function passed to your API implementation called. This functionallows you to create additional fields on nodes created by other plugins.

Onlythe original creator of a node can directly modify the node—all other plugins(including your gatsby-node.js) must use this function to create additionalfields. You’ve added an implementation of theAPI which Gatsby calls so plugins can addpages.As mentioned in the intro to this part of the tutorial, the steps to programmatically creating pages are:. Query data with GraphQL. Map the query results to pagesThe above code is the first step for creating pages from your markdown as you’reusing the supplied graphql function to query the markdown slugs you created.Then you’re logging out the result of the query which should look like:You need one additional thing beyond a slug to create pages: a page templatecomponent. Like everything in Gatsby, programmatic pages are powered by Reactcomponents. When creating a page, you need to specify which component to use.Create a directory at src/templates, and then add the following in a file namedsrc/templates/blog-post.js.

`And there you go! A working, albeit small, blog!

ChallengeTry playing more with the site. Try adding some more markdown files. Explorequerying other data from the MarkdownRemark nodes and adding them to thefrontpage or blog posts pages.In this part of the tutorial, you’ve learned the foundations of building withGatsby’s data layer. You’ve learned how to source and transform data usingplugins, how to use GraphQL to map data to pages, and then how to build pagetemplate components where you query for data for each page. What’s coming next?Now that you’ve built a Gatsby site, where do you go next?.

Share your Gatsby site on Twitter and see what other people have created by searching for #gatsbytutorial! Make sure to mention @gatsbyjs in your Tweet and include the hashtag #gatsbytutorial:). You could take a look at some.

Explore more. See what.

Check out the documentation on,.