Hello again Benjamin!
Thank you for the quick reply.

The EntityAPI would indeed do the job for the query above but I haven't found any API for the query below. However, I found out that $SYSTEM.SQL.Execute() does precisely what I need!

I have a few more minor questions about strings if you don't mind.

1. Is string addition/concatenation possible in Object Script? set query = "select * from " + tableName
   I've read "Basic String Operations and Functions" but didn't find any answers. 
2. Does Object Script supports multiline strings? The query below is very long and it would look nicer if it could be divided it into multiple lines.

SET myquery="select Master->EntityValue , Relation->EntityValue , Slave->EntityValue, source.SourceId FROM %iKnow_Objects.CrcUnique crc  JOIN %iKnow_Objects.CrcInSourceDetails as source ON crc.CrcUniId = source.CrcUniId WHERE source.DomainId = 1 AND Relation->EntityValue LIKE 'ring%' ORDER BY CorpusFrequency  DESC " 
	
SET result=$SYSTEM.SQL.Execute( myquery )
	
DO result.%Display()

The query should look for CRCs containing some words, and then return the CRC and the source that contains the CRC