[CALCITE-7246] UNNEST in Spark should convert to EXPLODE/POSEXPLODE

[xiaochen-zhou]

See: [CALCITE-6469]

[sonarqubecloud[bot]]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
94.1% Coverage on New Code
0.0% Duplication on New Code

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[dssysolyatin]

Also, you only covered the unparse part. It would be good to implement the parse part as well, so that explode/posexplode can be parsed and validated. Feel free to create a separate jira ticket for that if you don’t want to do it here

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