Inserting JSON Arrays into SQL Server Tables

Learn how to successfully insert JSON arrays into SQL Server tables by following our comprehensive guide. We cover common pitfalls and provide code examples to streamline the process.
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Inserting JSON Arrays into SQL Server Tables: A Step-by-Step Guide

Working with JSON data can be quite powerful, but it can also lead to challenges, especially when trying to insert JSON arrays into SQL Server tables. If you're facing issues with inserting JSON arrays, you're in the right place. In this guide, we'll explore a detailed solution to effectively insert JSON data into your database tables.

Problem Overview

You might be dealing with an error that reads "Invalid object name '# SubJsonRequest'" during the execution of your stored procedure for inserting JSON data into two tables: Doc and Con. The primary challenge is correctly looping through the JSON array and inserting the values into the tables as intended.

The Database Structure

Before diving into the solution, let’s clarify the database structure:

Doc Table: Stores document details.

Columns: Id, Name, Desc, RefName, IsActive

Con Table: Stores conditions related to documents.

Columns: Id, Field, Criter, DId, Conjunction, IsActive

Sample JSON Structure

Here is a sample JSON you may be working with:

[[See Video to Reveal this Text or Code Snippet]]

Solution: Altered Stored Procedure

To resolve the error and ensure that the JSON array is processed correctly, let's refine the stored procedure.

Step-by-Step Breakdown of the Procedure

Declare Variables: Set up the necessary variables for processing.

Count JSON Nodes: Use OPENJSON to count the number of nodes in the SubDoc array.

Transaction Handling: Utilize a transaction block to ensure data integrity.

Dynamic Table Handling: Check if the temporary table exists, and drop it if necessary before using it.

Loop Through the JSON Array: Use a WHILE loop to iterate over the JSON array and insert records into the Doc and Con tables.

Here’s the refactored stored procedure code:

[[See Video to Reveal this Text or Code Snippet]]

Key Changes Made

Temporary Table Management: Ensured that the temporary table is dropped if it already exists before creating it again.

Looping Index Management: Cleaned up the increment logic for the loop to prevent errors.

Transaction Management: Provided clear transaction handling to mitigate errors and ensure data integrity.

Conclusion

Inserting JSON arrays into SQL Server tables can be challenging, especially when managing complex data structures. By following the detailed procedure outlined in this post, you can efficiently and effectively store your JSON data in SQL Server.

If you encounter any further issues or have questions about the process, feel free to reach out in the comments below.