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kwestground/TreeRecursive.sql

Created November 19, 2021 12:31
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TreeRecursive.sql
WITH TreeRecursive AS
(
SELECT T0.ParentCode, T0.ChildCode, 0 [Level] FROM TreeTable T0
WHERE ParentCode = 'ParentCode'
UNION ALL
SELECT TS.ChildCode, T0.ChildCode, TS.[Level] + 1 AS [Level] FROM TreeTable TS
INNER JOIN TreeTable T0 ON TS.ChildCode = T0.ParentCode
)
SELECT * FROM TreeRecursive
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