Stream triggers row variables
=============================

TG_NAME
^^^^^^^

Data type name. This variable contains the name of the trigger actually
fired. The actual trigger name has a ‘\_bdrt’ or ‘\_bdrc’ suffix
(depending on trigger type) compared to the name provided during trigger
creation.

TG_WHEN
^^^^^^^

Data type text. This variable says ``BEFORE`` for both conflict and
transform triggers. You can get the stream trigger type by calling the
``bdr.trigger_get_type()`` information function. See :ref:`bdr.trigger_get_type <bdr.trigger_get_type>`  .

TG_LEVEL
^^^^^^^^

Data type text: a string of ``ROW`` .

TG_OP
^^^^^

Data type text: a string of ``INSERT`` , ``UPDATE`` , or ``DELETE``
identifying the operation for which the trigger was fired.

TG_RELID
^^^^^^^^

Data type oid: the object ID of the table that caused the trigger
invocation.

TG_TABLE_NAME
^^^^^^^^^^^^^

Data type name: the name of the table that caused the trigger
invocation.

TG_TABLE_SCHEMA
^^^^^^^^^^^^^^^

Data type name: the name of the schema of the table that caused the
trigger invocation. For partitioned tables, this is the name of the root
table.

TG_NARGS
^^^^^^^^

Data type integer: the number of arguments given to the trigger function
in the ``bdr.create_conflict_trigger()`` or
``bdr.create_transform_trigger()`` statement.

TG_ARGV[]
^^^^^^^^^

Data type array of text: the arguments from the
``bdr.create_conflict_trigger()`` or ``bdr.create_transform_trigger()``
statement. The index counts from 0. Invalid indexes (less than 0 or
greater than or equal to ``TG_NARGS`` ) result in a ``NULL`` value.