[Feat] Add table less query for table model#17437

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FearfulTomcat27:feat/table-less-query

Commits on Apr 7, 2026

feat: Support for queries without a FROM clause and ValuesNodes
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test: Add test cases for table-less queries in IoTDBComplexQueryIT
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Commits on Apr 14, 2026

fix: Enhance handling of no-FROM queries to support single-row results
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