Snowflake Vs MS-SQL - Part 115 - Recursive View - Hierarchy


Recursive View - Hierarchy

Sometimes data is stored in a hierarchical structure within a table. To display the complete lineage or parent-child relationship, you can use a recursive query.

MS-SQL Server

We can achieve it by creating a CTE as follows:



In Snowflake, we can use a similar approach as above; however, we can make use of a Recursive View as follows:




For more details, refer to the Recursive_View section.


Yogesh Shinde
Location: Pune, Maharashtra, India

Comments

Post a Comment

Popular posts from this blog

Snowflake Vs MS-SQL - Series

Image
Snowflake Vs MS-SQL - Series Part 115 -  Recursive View - Hierarchy   -  Part 115 Part 114 - Period Data Type - Part 114 Part 113 - Clear the cache - Part 113 Part 112 - Show Columns of a Table - Part 112 Part 111 - Extract a Year from the DATE - Part 111 Part 110 - Convert Data Type - Parse and Save XML - Part 110 Part 109 - Convert Data Type - Decimal to Integer  - Part 109 Part 108 - Filter Columns in Result Grid  - Part 108 Part 107 - Create or Alter Table - Add Column - Part 107 Part 106 - Table Structure - Describe - Part 106 Part 105 - PIVOT - Custom alias to column name - Part 105 Part 104 - Row Comparison - HASH - Part 104 Part 103 - ORDER BY ALL - SORTING - Part 103 Part 102 - Last Value in the Series - Part 102 Part 101 - Trigonometry Functions - Geometry - Part 101 Part 100 - Split String into Different Columns - Part 100 Part 99 - Multi-Table Insert based on condition - Part 99 Part 98 -  Create Table If Not Exists - Part 98 Part 97 - I...
Read more

Snowflake Key Concepts

Image
  Snowflake is a cloud-based data warehouse that offers scalable and secure storage and processing of structured and semi-structured data. Snowflake uses a shared-nothing architecture for parallel processing and offers native support for SQL as well as other programming languages such as Python, R, and Java   Snowflake’s unique architecture consists of three key layers: -           Database Storage -           Query Processing -           Cloud Services In Snowflake, they have done the decoupling of storage and compute.   Virtual Warehouse: -           A compute resource in Snowflake that processes queries and performs data loading and unloading. -           It can be independently scaled up or down based on demand. -   ...
Read more

Snowflake Vs MS-SQL - Part 46 - RATIO_TO_REPORT

Image
            RATIO_TO_REPORT If you have a table in which amounts are present and you want to calculate the percentage distribution of those amounts as below: + ----------+--------+----------------+ | STORE_ID | PROFIT | PERCENT_PROFIT | | ----------+--------+----------------| |         1 | 500 . 00 |     42          | |         2 | 250 . 00 |     21          | |         3 | 450 . 00 |     38          | |         4 |   NULL |     NULL        | + ----------+--------+----------------+ MS-SQL Server   Using the SUM function and OVER clause, you can achieve the above output as below: In  Snowflake,  we can use a similar approach as above.  However, Snowflake has a different function  RATIO_TO_REPORT : ...
Read more