Yin Huai created SPARK-14885:
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             Summary: When creating a CatalogColumn, we should use 
catalogString of a DataType
                 Key: SPARK-14885
                 URL: https://issues.apache.org/jira/browse/SPARK-14885
             Project: Spark
          Issue Type: Sub-task
          Components: SQL
            Reporter: Yin Huai
            Priority: Minor


Right now, the data type field of a CatalogColumn is using the string 
representation. When we create this string from a DataType object, there are 
places where we use simpleString. Although catalogString is the same as 
simpleString right now, it is better to use catalogString. So, we will not 
introduce issues when we change the semantic of simpleString or the 
implementation of catalogString.



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