Jay Brown
31 lines
1.2 KiB
SQL
31 lines
1.2 KiB
SQL
-- Add unique constraint to prevent duplicate versions per document
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-- This ensures that concurrent requests cannot create the same version number
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-- First, add documentId column to versions table for easier constraint enforcement
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ALTER TABLE documentFieldExtractionVersions
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ADD COLUMN documentId uuid;
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-- Populate documentId from the joined extraction record
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UPDATE documentFieldExtractionVersions dfev
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SET documentId = dfe.documentId
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FROM documentFieldExtractions dfe
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WHERE dfev.fieldExtractionId = dfe.id;
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-- Make documentId NOT NULL after populating
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ALTER TABLE documentFieldExtractionVersions
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ALTER COLUMN documentId SET NOT NULL;
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-- Add foreign key constraint (documents table has 'id' as primary key)
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ALTER TABLE documentFieldExtractionVersions
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ADD CONSTRAINT fk_documentfieldextractionversions_documentid
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FOREIGN KEY (documentId) REFERENCES documents(id);
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-- Add unique constraint on documentId + version
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-- This prevents duplicate version numbers for the same document
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CREATE UNIQUE INDEX idx_unique_version_per_document
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ON documentFieldExtractionVersions(documentId, version);
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-- Add index for efficient lookups by documentId
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CREATE INDEX idx_documentfieldextractionversions_documentid
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ON documentFieldExtractionVersions(documentId);
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