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https://issues.apache.org/jira/browse/DRILL-5258?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Kunal Khatua closed DRILL-5258.
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> Allow "extended" mock tables access from SQL queries
> ----------------------------------------------------
>
> Key: DRILL-5258
> URL: https://issues.apache.org/jira/browse/DRILL-5258
> Project: Apache Drill
> Issue Type: Improvement
> Affects Versions: 1.10.0
> Reporter: Paul Rogers
> Assignee: Paul Rogers
> Priority: Minor
> Labels: ready-to-commit
> Fix For: 1.10.0
>
>
> DRILL-5152 provided a simple way to generate sample data in SQL using a new,
> simplified version of the mock data generator. This approach is very
> convenient, but is inherently limited. For example, the limited syntax
> available in SQL does not encoding much information about columns such as
> repeat count, data generator or so on. The simple SQL approach does not allow
> generating multiple groups of data.
> However, all these features are present in the original mock data source via
> a special JSON configuration file. Previously, only physical plans could
> access that extended syntax.
> This ticket requests a SQL interface to the extended mock data source:
> {code}
> SELECT * FROM `mock`.`example/mock-options.json`
> {code}
> Mock data source options are always stored as a JSON file. Since the existing
> mock data generator for SQL never uses JSON files, a simple rule is that if
> the table name ends in ".json" then it is a specification, else the
> information is encoded in table and column names.
> The format of the data generation syntax is documented in the mock data
> source classes.
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