assigning two variables in bourne shell Post: 302547773

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Hi, Can the below be clarified please. i just want to know what is the difference between the two ways of assigning variables as mentioned below. export SRC_TBL=${SRC_TBL-"MMA_COPAY_PLN_FACT_STG"} export SRC_TBL="MMA_COPAY_PLN_FACT_STG" thanks in advance :) Arun

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rdf::query::plan::subselect

RDF::Query::Plan::SubSelect(3pm)			User Contributed Perl Documentation			  RDF::Query::Plan::SubSelect(3pm)

NAME

       RDF::Query::Plan::SubSelect - Executable query plan for sub-select queries.

VERSION

       This document describes RDF::Query::Plan::SubSelect version 2.908.

METHODS

       Beyond the methods documented below, this class inherits methods from the RDF::Query::Plan class.

       "new ( $query, [ \%logging_keys ] )"
	   Returns a new SubSelect query plan object. "<$query"> is a RDF:Query object representing a SELECT query.

       "execute ( $execution_context )"
       "next"
       "close"
       "query"
	   Returns the sub-select query object.

       "plan"
	   Returns the sub-select query plan object.

       "distinct"
	   Returns true if the pattern is guaranteed to return distinct results.

       "ordered"
	   Returns true if the pattern is guaranteed to return ordered results.

       "plan_node_name"
	   Returns the string name of this plan node, suitable for use in serialization.

       "plan_prototype"
	   Returns a list of scalar identifiers for the type of the content (children) nodes of this plan node. See RDF::Query::Plan for a list of
	   the allowable identifiers.

       "plan_node_data"
	   Returns the data for this plan node that corresponds to the values described by the signature returned by "plan_prototype".

       "graph ( $g )"

AUTHOR

	Gregory Todd Williams <gwilliams@cpan.org>

perl v5.14.2							    2012-01-31					  RDF::Query::Plan::SubSelect(3pm)