Updating multiple records 2 way cam cybersex

Maybe I have overlooked something, but is it possible to build a query that updates the same column over multiple rows with different values using the query builder?

I have about 60,000 rows that I'm needing to update the information from column_a to column_b.

A requirement arises in many systems to update multiple SQL database rows.

For small numbers of rows requiring updates, it can be adequate to use an UPDATE statement for each row that requires an update.

When trying to update multiple rows though I believe I'm getting stuck on having to have 60,000 unique key identifiers.

This was what I used to update 1 of the records, I'm using Oracle SQL: Cloyd, the description is indeed confusing. Please, shall you consider this worth, comment out and I'll keep editing the answer until we get 'there'.

But if there are a large number of rows that require an update, then the overhead of issuing large numbers of UPDATE statements can result in the operation as a whole taking a long time to complete.

The traditional advice for improving performance for multiple UPDATE statements is to “prepare” the required query once, and then “execute” the prepared query once for each row requiring an update.

This is the intention of UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; “key_columns” specifies the columns which will be used to identify rows which need to be updated (using WHERE). The first element provides the value of the column (specified by “key_columns”) to identify the row to be updated.

The dominant factor in the time taken to complete the overall operation tends to be the “admin” work in conveying the application’s intention to the database server rather than the actual updates to the database.

A more effective solution to this problem is to attempt to reduce the number of UPDATE statements.

You can also update multiple records through the import process. To edit multiple records: When selecting contacts and organizations, the first button in the toolbar is the Bulk Edit button.

Clicking this pencil icon will take you to the Bulk Edit page, where you can make multiple edits at once.

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Let us start with a simple table: UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1200 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1200 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; UPDATE staff SET salary = 1200 WHERE name = ' Bob'; UPDATE staff SET salary = 1250 WHERE name = ' Jane'; UPDATE staff SET salary = 1200 WHERE name = ' Frank'; UPDATE staff SET salary = 1250 WHERE name = ' Susan'; UPDATE staff SET salary = 1200 WHERE name = ' John'; We are no longer setting all the salary fields to the same value, so we can’t collapse it into a single statement.

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