[WIP][Table Model] Support DESCRIBE QUERY for relational metadata extraction#17270

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ShauryaChauhan1411 wants to merge 5 commits intoapache:masterfrom

ShauryaChauhan1411:describe-query-feature

Commits on Feb 25, 2026

[IOTDB-16539] Fix ClassCastException in ElasticSerializableTVList for M4 queries
ShauryaChauhan1411
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Commits on Mar 8, 2026

feat(table-model): implement DESCRIBE QUERY for relational metadata extraction
ShauryaChauhan1411
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Commits on Mar 9, 2026

refactor: update DESCRIBE syntax and clean up debug info
ShauryaChauhan1411
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Commits on Mar 16, 2026

Fix: align DESCRIBE headers with DuckDB and fix Binary constructor
ShauryaChauhan1411
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Commits on Mar 21, 2026

Merge branch 'master' into describe-query-feature
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