[jira] [Resolved] (CALCITE-5660) Implement BigQuery Array Subscript Operators

["Julian Hyde (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5660?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Julian Hyde resolved CALCITE-5660.
----------------------------------
    Fix Version/s: 1.35.0
       Resolution: Fixed

Fixed in [ea9db442|https://github.com/apache/calcite/commit/ea9db4421f572c083f4724324df226edf1206f31]; thanks for the PR, [~tanclary]!

> Implement BigQuery Array Subscript Operators
> --------------------------------------------
>
>                 Key: CALCITE-5660
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5660
>             Project: Calcite
>          Issue Type: Task
>            Reporter: Tanner Clary
>            Assignee: Tanner Clary
>            Priority: Major
>              Labels: pull-request-available
>             Fix For: 1.35.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> When indexing an array in BigQuery, you are required to wrap the index in one of four position keywords: {{OFFSET}}, {{ORDINAL}}, {{SAFE_OFFSET}}, and {{SAFE_ORDINAL}}. 
> {{OFFSET(index)}}: The index starts at zero. Produces an error if the index is out of range.
> {{SAFE_OFFSET(index)}}: The index starts at zero. Returns NULL if the index is out of range.
> {{ORDINAL(index)}}: The index starts at one. Produces an error if the index is out of range.
> {{SAFE_ORDINAL(index)}}: The index starts at one. Returns NULL if the index is out of range.
> These operators are very similar to the existing {{ITEM}} operator currently used to index an array in Calcite. I believe the offset and out of bounds behavior for the existing implementation could be parameterized to support the above operators. 
> [Link to BigQuery docs|https://cloud.google.com/bigquery/docs/reference/standard-sql/operators#array_subscript_operator]
> I will have a PR open for this in the next day or two, in the meantime any comments, questions, or suggestions are welcome as always. 



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