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Clarify use of expressions in UPDATE docs #12438

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May 20, 2022
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Clarify use of expressions in UPDATE docs #12438

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27 changes: 24 additions & 3 deletions docs/src/main/sphinx/sql/update.rst
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Original file line number Diff line number Diff line change
Expand Up @@ -26,13 +26,34 @@ Examples

Update the status of all purchases that haven't been assigned a ship date::

UPDATE purchases SET status = 'OVERDUE' WHERE ship_date IS NULL;
UPDATE
purchases
SET
status = 'OVERDUE'
WHERE
ship_date IS NULL;

Update the account manager and account assign date for all customers::

UPDATE customers SET
UPDATE
customers
SET
account_manager = 'John Henry',
assign_date = DATE '2007-01-01';
assign_date = now();

Update the manager to be the name of the employee who matches the manager ID::
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UPDATE
new_hires
SET
manager = (
SELECT
e.name
FROM
employees e
WHERE
e.employee_id = new_hires.manager_id
);

Limitations
-----------
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