31 lines
832 B
SQL
31 lines
832 B
SQL
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-- Deduplicate reports before adding the unique constraint:
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-- keep the earliest report per (userId, date), move tasks from the
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-- duplicates onto it, then delete the duplicates.
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UPDATE "Task"
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SET "reportId" = (
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SELECT keep."id"
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FROM "Report" keep
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JOIN "Report" cur ON cur."id" = "Task"."reportId"
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WHERE keep."userId" = cur."userId"
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AND keep."date" = cur."date"
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ORDER BY keep."createdAt" ASC, keep."id" ASC
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LIMIT 1
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);
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DELETE FROM "Report"
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WHERE "id" IN (
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SELECT "id" FROM (
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SELECT "id",
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ROW_NUMBER() OVER (
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PARTITION BY "userId", "date"
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ORDER BY "createdAt" ASC, "id" ASC
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) AS rn
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FROM "Report"
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)
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WHERE rn > 1
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);
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-- CreateIndex
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CREATE UNIQUE INDEX "Report_userId_date_key" ON "Report"("userId", "date");
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