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Re: UPDATE with multiple WHERE conditions
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* Re: UPDATE with multiple WHERE conditions
@ 2024-06-12 21:31 Muhammad Salahuddin Manzoor <[email protected]>
  2024-06-12 21:34 ` Re: UPDATE with multiple WHERE conditions Rich Shepard <[email protected]>
  0 siblings, 1 reply; 2+ messages in thread

From: Muhammad Salahuddin Manzoor @ 2024-06-12 21:31 UTC (permalink / raw)
  To: Rich Shepard <[email protected]>; +Cc: [email protected]

Greetings,

You can use Temporary table. You could create a temporary table with one
column containing the condition values and then use it to update your main
table. This approach can be more flexible and cleaner than writing a script
with multiple update statements.

-- Create a temporary table with one column containing the condition values
CREATE TEMPORARY TABLE temp_conditions (condition_value TEXT);

-- Insert the condition values into the temporary table
INSERT INTO temp_conditions (condition_value) VALUES
    ('value1'),
    ('value2'),
    ('value3'),
    -- Add more values as needed...
    ('value295');

-- Update the boolean column based on the condition values
UPDATE your_table
SET boolean_column = true
WHERE condition_column IN (SELECT condition_value FROM temp_conditions);

-- Clean up: drop the temporary table
DROP TABLE IF EXISTS temp_conditions;

*Salahuddin (μ‚΄λΌν›„λ”˜**)*


On Thu, 13 Jun 2024 at 02:28, Rich Shepard <[email protected]> wrote:

> I have a table with 3492 rows. I want to update a boolean column from
> 'false' to 'true' for 295 rows based on the value of another column.
>
> Is there a way to access a file with those condition values? If not, should
> I create a temporary table with one column containing those values, or do I
> write a psql script with 295 lines, one for each row to be updated?
>
> TIA,
>
> Rich
>
>
>


^ permalink  raw  reply  [nested|flat] 2+ messages in thread

* Re: UPDATE with multiple WHERE conditions
  2024-06-12 21:31 Re: UPDATE with multiple WHERE conditions Muhammad Salahuddin Manzoor <[email protected]>
@ 2024-06-12 21:34 ` Rich Shepard <[email protected]>
  0 siblings, 0 replies; 2+ messages in thread

From: Rich Shepard @ 2024-06-12 21:34 UTC (permalink / raw)
  To: [email protected]

On Thu, 13 Jun 2024, Muhammad Salahuddin Manzoor wrote:

> You can use Temporary table. You could create a temporary table with one
> column containing the condition values and then use it to update your main
> table. This approach can be more flexible and cleaner than writing a
> script with multiple update statements.

Salahuddin,

Thank you. I thought this would be the best approach.

Regards,

Rich






^ permalink  raw  reply  [nested|flat] 2+ messages in thread

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