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https://issues.apache.org/jira/browse/DRILL-4264?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16145835#comment-16145835
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ASF GitHub Bot commented on DRILL-4264:
---------------------------------------
Github user paul-rogers commented on a diff in the pull request:
https://github.com/apache/drill/pull/909#discussion_r135872295
--- Diff:
logical/src/main/java/org/apache/drill/common/expression/SchemaPath.java ---
@@ -115,6 +112,33 @@ public static SchemaPath create(NamePart namePart) {
}
/**
+ * Parses input string and returns {@code SchemaPath} instance.
+ *
+ * @param expr input string to be parsed
+ * @return {@code SchemaPath} instance
+ */
+ public static SchemaPath parseFromString(String expr) {
--- End diff --
Thanks for the explanation. Can you copy it into the Javadoc for this
method? Will help others in the future.
> Allow field names to include dots
> ---------------------------------
>
> Key: DRILL-4264
> URL: https://issues.apache.org/jira/browse/DRILL-4264
> Project: Apache Drill
> Issue Type: Improvement
> Components: Execution - Codegen
> Reporter: Alex
> Assignee: Volodymyr Vysotskyi
> Labels: doc-impacting
> Fix For: 1.12.0
>
>
> If you have some json data like this...
> {code:javascript}
> {
> "0.0.1":{
> "version":"0.0.1",
> "date_created":"2014-03-15"
> },
> "0.1.2":{
> "version":"0.1.2",
> "date_created":"2014-05-21"
> }
> }
> {code}
> ... there is no way to select any of the rows since their identifiers contain
> dots and when trying to select them, Drill throws the following error:
> Error: SYSTEM ERROR: UnsupportedOperationException: Unhandled field reference
> "0.0.1"; a field reference identifier must not have the form of a qualified
> name
> This must be fixed since there are many json data files containing dots in
> some of the keys (e.g. when specifying version numbers etc)
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