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Overview
| Comment: | Document the fact that UPSERTs count INSERT operations but not UPDATEs. |
|---|---|
| Timelines: | family | ancestors | descendants | both | trunk |
| Files: | files | file ages | folders |
| SHA3-256: |
fcfd6e8be65dbc75e6306eb102c1c2c6 |
| User & Date: | drh 2018-04-20 00:00:28 |
Context
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2018-04-25
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| 00:02 | Updates to the change log. check-in: 6d211fe371 user: drh tags: trunk | |
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2018-04-20
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| 00:00 | Document the fact that UPSERTs count INSERT operations but not UPDATEs. check-in: fcfd6e8be6 user: drh tags: trunk | |
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2018-04-19
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| 13:28 | Preliminary documentation for upsert. check-in: 74564b6da7 user: drh tags: trunk | |
Changes
Changes to pages/pragma.in.
446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 |
<p>Query or change the count-changes flag. Normally, when the
count-changes flag is not set, [INSERT], [UPDATE] and [DELETE] statements
return no data. When count-changes is set, each of these commands
returns a single row of data consisting of one integer value - the
number of rows inserted, modified or deleted by the command. The
returned change count does not include any insertions, modifications
or deletions performed by triggers, or any changes made automatically
by [foreign key actions].</p>
<p>Another way to get the row change counts is to use the
[sqlite3_changes()] or [sqlite3_total_changes()] interfaces.
There is a subtle different, though. When an INSERT, UPDATE, or
DELETE is run against a view using an [INSTEAD OF trigger],
the count_changes pragma reports the number of rows in the view
that fired the trigger, whereas [sqlite3_changes()] and
|
| | |
446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 |
<p>Query or change the count-changes flag. Normally, when the
count-changes flag is not set, [INSERT], [UPDATE] and [DELETE] statements
return no data. When count-changes is set, each of these commands
returns a single row of data consisting of one integer value - the
number of rows inserted, modified or deleted by the command. The
returned change count does not include any insertions, modifications
or deletions performed by triggers, any changes made automatically
by [foreign key actions], or updates caused by an [upsert].</p>
<p>Another way to get the row change counts is to use the
[sqlite3_changes()] or [sqlite3_total_changes()] interfaces.
There is a subtle different, though. When an INSERT, UPDATE, or
DELETE is run against a view using an [INSTEAD OF trigger],
the count_changes pragma reports the number of rows in the view
that fired the trigger, whereas [sqlite3_changes()] and
|