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[Pg-kit]: Fix unique constraint introspection returning zero rows #5039

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[Pg-kit]: Fix unique constraint introspection returning zero rows #5039

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16 changes: 11 additions & 5 deletions drizzle-kit/src/serializer/pgSerializer.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1228,12 +1228,18 @@ WHERE
const tableResponse = await getColumnsInfoQuery({ schema: tableSchema, table: tableName, db });

const tableConstraints = await db.query(
`SELECT c.column_name, c.data_type, constraint_type, constraint_name, constraint_schema
`SELECT kcu.column_name, c.data_type, tc.constraint_type, tc.constraint_name, tc.constraint_schema
FROM information_schema.table_constraints tc
JOIN information_schema.constraint_column_usage AS ccu USING (constraint_schema, constraint_name)
JOIN information_schema.columns AS c ON c.table_schema = tc.constraint_schema
AND tc.table_name = c.table_name AND ccu.column_name = c.column_name
WHERE tc.table_name = '${tableName}' and constraint_schema = '${tableSchema}';`,
JOIN information_schema.key_column_usage kcu
ON tc.constraint_name = kcu.constraint_name
AND tc.constraint_schema = kcu.constraint_schema
AND tc.table_name = kcu.table_name
JOIN information_schema.columns AS c
ON c.table_schema = tc.constraint_schema
AND c.table_name = tc.table_name
AND c.column_name = kcu.column_name
WHERE tc.table_name = '${tableName}' and tc.constraint_schema = '${tableSchema}'
ORDER BY tc.constraint_name, kcu.ordinal_position;`,
);

const tableChecks = await db.query(`SELECT
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