in my MySQL schema, I have the
category(id, parentid, name) table
In the MSSQL, I have that CTE query (to build a category tree from the bottom up for a supplied category ID:
with CTE (id, pid, name) as ( select id, parentid as pid,name from category where id = 197 union all select CTE.pid as id , category.parentid as pid, category.name from CTE inner join category on category.id = CTE.pid ) select * from CTE
How to ‘transform’ that query to MySQL ?
Unfortunately MySQL doesn’t support CTE (Common Table Expressions). This is long overdue IMO. Often, you can just use a subquery instead, but this particular CTE is recursive: it refers to itself inside the query. Recursive CTE’s are extremely useful for hierarchical data, but again: MySql doesn’t support them at all. You have to implement a stored procedure to get the same results.
A previous answer of mine should provide a good starting point: