37 lines
1007 B
Transact-SQL
37 lines
1007 B
Transact-SQL
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USE [Database]
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IF OBJECT_ID('[Procedures].[tree_positions]', 'P') IS NOT NULL
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DROP PROCEDURE [Procedures].[tree_positions];
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GO
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CREATE PROCEDURE [Procedures].[tree_positions]
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@product_type_id INT
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AS
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IF OBJECT_ID('[tempdb].[dbo].[#product_types_row_number]') IS NOT NULL
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DROP TABLE [dbo].[#product_types_row_number];
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CREATE TABLE [#product_types_row_number]
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(
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[id] INT NOT NULL,
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[parent_id] INT,
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[row_number] INT NOT NULL
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);
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INSERT INTO [#product_types_row_number]
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SELECT [id], [parent_id], ROW_NUMBER() OVER (PARTITION BY [parent_id] ORDER BY [parent_id], [id] ASC) - 1
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FROM [Tables].[product_types];
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WITH [result] AS (
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SELECT
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[id], [parent_id], [row_number]
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FROM [#product_types_row_number]
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WHERE [id] = @product_type_id
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UNION ALL
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SELECT [PT].[id], [PT].[parent_id], [PT].[row_number]
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FROM [result] AS [R]
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JOIN [#product_types_row_number] AS [PT]
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ON [PT].[id] = [R].[parent_id]
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)
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SELECT [id], [parent_id], [row_number]
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FROM [result]
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ORDER BY [id];
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