45 lines
1004 B
Markdown
45 lines
1004 B
Markdown
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# Transactions
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Transactions are simple in sqlpp11. Assuming you have a connection called `db`,
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you can start and commit a transaction just like this:
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```C++
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auto tx = start_transaction(db);
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// do something
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tx.commit();
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```
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If you need to rollback the transaction, you can call it's `rollback()` member,
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for instance like this:
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```C++
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auto tx = start_transaction(db);
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try
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{
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// do something
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tx.commit();
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}
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catch (...)
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{
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tx.rollback();
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}
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```
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In case you call neither `commit()` nor `rollback()` on a transaction before it
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goes out of scope, it will call `rollback()` in its destructor. This automatic
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rollback will be reported by the connection.
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## More options
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You can turn off reporting for automatic rollback in the destructor by passing
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`sqlpp::quiet_auto_rollback`.
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```C++
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auto tx = start_transaction(db, sqlpp::quiet_auto_rollback);
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```
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You can also specify the isolation level for the transaction:
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```C++
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auto tx = start_transaction(db, ::sqlpp::isolation_level::repeatable_read);
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```
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