[Rets-dev] RETS2 Workgroup Meeting Tuesday 3/14 2PM EST - RQL Query Language

Dave Scott dms at haplos.com
Tue Mar 14 16:12:04 CST 2006


One comment about the RQL proposal:

I imagine that a strong motivation for proposing RQL is that it would  
alllow RETS developers to use existing SQL-based technology.  E.g.,   
a RETS server could pass a query on to a database view without having  
to translate DMQL.  However, that works only if RQL is a proper  
subset of SQL.  The item

	Use ALL IN for DMQL lookup-and equivalent, e.g. (field=+value1,value2)

extends SQL, which means that valid RQL is not necessarily valid  
SQL.  So, we're back to writing special translators to marshal  
queries in between RQL and SQL.  Is this wise?
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