Update unpivot-multiple-columns in-snowflake.md

Author: structured-query-language

unpivot-multiple-columns in-snowflake.md

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 Data can be organized in different ways, for example, in a short/wide or tall/skinny/narrow/long format, but still contain the same information. It  is often easier to visualize data organized in a long table format, that is, when the values are collected in just a few value columns. Unpivoting is one way to transform data from a wide table to a long table format. This unpivoted data can then be consumed by Tablue, Looker, Power BI etc for building visualizations.
 
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 ## Example 1: Unpivot 3 Columns
 Suppose you have a Wide Table format Performance Ratings that you need to covert to a Long Table format: