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Add note on batch insert behaviour

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d6y committed Apr 12, 2016
1 parent 3a50a33 commit 93a33472440ced5e13bdad94f1c5788f842fd2fc
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  1. +9 −0 slick/src/sphinx/queries.rst
@@ -269,6 +269,14 @@ Here is an example of using this feature to return an object with an updated id:
.. includecode:: code/LiftedEmbedding.scala#insert3b
.. note::
When using the ``++=`` batch insert operation, Slick makes use of the JDBC batch API.
The underlying JDBC driver will decide how to transmit the batch (via SQL) to the database server.
Slick may fall back to generating multiple insert statements for batch operations.
This will depend on the driver (if it supports batch insert),
and other circumstances (``returning`` keys is generally not supported in batch operations).
Instead of inserting data from the client side you can also insert data
created by a ``Query`` or a scalar expression that is executed in the
database server:
@@ -279,6 +287,7 @@ In these cases, ``AutoInc`` columns are *not* ignored.
.. index:: update, UpdateInvoker, updateStatement
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