Скачать или смотреть How to Convert and Merge Two Strings into a Table in SQL Server

Learn how to effectively convert two strings into a table and merge them in SQL Server. This step-by-step guide breaks down the process with easy-to-understand examples.
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This video is based on the question https://stackoverflow.com/q/72035819/ asked by the user 'Mohammad Dayyan' ( https://stackoverflow.com/u/191647/ ) and on the answer https://stackoverflow.com/a/72036414/ provided by the user 'Yitzhak Khabinsky' ( https://stackoverflow.com/u/1932311/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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How to Convert and Merge Two Strings into a Table in SQL Server

Are you looking to merge two strings into a single table in SQL Server? If you've found yourself wrestling with the process, you’re not alone! This guide will walk you through how to achieve this in a clear, step-by-step manner. In this example, we will use two comma-separated strings that represent IDs and access types, convert them into a table, and then merge the elements together to create a well-structured output.

The Problem

Let's consider the two strings we have:

Allowed Card Board IDs: '1,2,3,4,5,6'

Allowed Card Board Access Types: '11,22,33,44,55,66'

What we want to do is convert these strings into a table with two columns: Id and AccessType, and display them as follows:

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The Solution

To accomplish this, we will write a SQL query that utilizes the SplitString function to convert the strings into tables, followed by a method to combine the results. Here's how to do it:

Step 1: Declare Variables and Create a Table

First, we need to declare the variables that will hold our string data, along with a temporary table that will store the results.

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Step 2: Convert Strings to XML

Next, we will convert the strings into XML format. This allows us to utilize powerful features of SQL Server for handling structured data.

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Step 3: Extract Data Using Common Table Expressions (CTE)

We will create two CTEs to extract and number the IDs and AccessTypes from the XML.

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Step 4: Merge the Data

Finally, we can join the two CTEs and insert the results into our temporary table.

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Step 5: Display the Results

Now that we've merged our data, we can select from our temporary table to see the formatted output.

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Output

When we execute the above SQL statements, we get the following result:

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Conclusion

Merging two strings into a table in SQL Server may seem challenging, but with the right approach, you can achieve it effectively. By utilizing string manipulation and XML conversion, you can easily obtain organized data outputs. Try this method in your SQL projects, and enhance your data management skills!

Feel free to leave comments or questions below, and happy coding!