24 lines
420 B
MySQL
24 lines
420 B
MySQL
|
BEGIN;
|
||
|
|
|
||
|
|
ALTER TABLE receipts
|
||
|
|
ADD COLUMN block_id INT;
|
||
|
|
|
||
|
|
UPDATE receipts
|
||
|
|
SET block_id = (
|
||
|
|
SELECT block_id FROM transactions WHERE transactions.id = receipts.transaction_id
|
||
|
|
);
|
||
|
|
|
||
|
|
ALTER TABLE receipts
|
||
|
|
ALTER COLUMN block_id SET NOT NULL;
|
||
|
|
|
||
|
|
ALTER TABLE receipts
|
||
|
|
ADD CONSTRAINT blocks_fk
|
||
|
|
FOREIGN KEY (block_id)
|
||
|
|
REFERENCES blocks (id)
|
||
|
|
ON DELETE CASCADE;
|
||
|
|
|
||
|
|
ALTER TABLE receipts
|
||
|
|
DROP COLUMN transaction_id;
|
||
|
|
|
||
|
|
COMMIT;
|