Fix #1249: Correct REINDEX INDEX syntax to use single index instead of concatenating all #1283
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Fix #1249
This PR fixes an issue where
PostgresReindexGeneratorwas incorrectly concatenating all index names without delimiters, generating invalid SQL likeREINDEX INDEX i1i2i3. PostgreSQL only supports one index per REINDEX INDEX statement, so the fix now randomly selects a single index usingRandomly.fromList(indexes).getIndexName()instead of joining all indexes together.