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How to Convert a Recursive MSSQL CTE Query to MySQL?

Linda Hamilton
Linda HamiltonOriginal
2024-11-18 07:24:02655browse

How to Convert a Recursive MSSQL CTE Query to MySQL?

Transforming MSSQL CTE Query to MySQL

In MySQL, which lacks CTE (Common Table Expression) support, converting recursive CTE queries like the one used in MSSQL to build hierarchical category trees can pose a challenge.

The provided MSSQL CTE query repeatedly extracts the parent category for a given category ID, effectively traversing the tree from the bottom up. Unfortunately, MySQL lacks the recursive capabilities of CTEs.

As a workaround, a stored procedure can be implemented to simulate the recursive nature of the CTE. One such stored procedure is described in a previous answer:

Generating Depth based tree from Hierarchical Data in MySQL (no CTEs)

This stored procedure provides a recursive mechanism to build a hierarchical tree structure from hierarchical data, comparable to the functionality of a CTE. By leveraging it, you can achieve similar results to the MSSQL CTE query without directly using CTE syntax.

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