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https://issues.apache.org/jira/browse/SPARK-14591?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15238701#comment-15238701
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Herman van Hovell commented on SPARK-14591:
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I think it is still used in a couple of places. The are a few differences
between the two:
# The CatalystSqlParser family doesn't allow the use of keywords as column
names;
# The CatalystSqlParser family is more lenient with the use of backticks in
column names (as long as you escape them properly);
# The CatalystSqlParser family allows you the define struct columns without ':'
between the name and the data type.
So we can remove it as long as the first point is not an issue.
The problem we are having with {{decimal(precision)}} in the hive's
{{decimal_1}} test might have to do with the fact that datatypes in CTAS are
not really parsed. Their string value is just passed in to a catalog column.
> DDLParser should accept decimal(precision)
> ------------------------------------------
>
> Key: SPARK-14591
> URL: https://issues.apache.org/jira/browse/SPARK-14591
> Project: Spark
> Issue Type: Bug
> Components: SQL
> Reporter: Yin Huai
>
> Right now, our DDLParser does not support {{decimal(precision)}} (the scale
> will be set to 0). We should support it.
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