Flattening a multi-table schema into one table before SQL generation, then reconstructing JOINs in a second pass, improves multi-table text-to-SQL accuracy on SPIDER and BIRD.
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UNJOIN: Enhancing Multi-Table Text-to-SQL Generation via Schema Simplification
Flattening a multi-table schema into one table before SQL generation, then reconstructing JOINs in a second pass, improves multi-table text-to-SQL accuracy on SPIDER and BIRD.