Files
secondo/Algebras/NestedRelation2/NestedRelation2.examples
2026-01-23 17:03:45 +08:00

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Database : nrel
Restore : YES
Operator : unnest
Number : 1
Signature: stream -> stream
Example : query families feed unnest[Children] count
Result : 5
Operator : nest2
Number : 1
Signature: stream -> stream
Example : query families feed unnest[Children] nest2[Father,Mother;Parents] count
Result : 3
Operator : count
Number : 2
Signature: nrel2 -> int
Example : query children count
Result : 3
Operator : feed
Number : 1
Signature: nrel2 -> stream
Example : query children feed count
Result : 3
Operator : consume2
Number : 1
Signature: stream -> nrel2
Example : query children feed consume2 count
Result : 3
Operator : aconsume2
Number : 1
Signature: stream -> arel2
Example : query children feed aconsume2 count
Result : 3
Operator : extract
Number : 1
Signature: stream -> nrel2
Example : query children feed extract[Kinder] count
Result : 1
Operator : rename
Number : 1
Signature: stream -> stream
Example : query children feed rename[cloned] consume count
Result : 3
Operator : gettuples
Number : 1
Signature: stream -> stream
Example : query index1 feed children gettuples count
Result : 3
Operator : dblpimport
Number : 1
Signature: text -> nrel2
Example : query "dblp.xml" dblpimport["stopwords.txt"] count > 0
Result : TRUE
Operator : genRel
Number : 1
Signature: string, string, int, int, string, int, int, arel2/arel/vector -> nrel2/arel2/nrel/arel/vector
Example : query genRel("nrel2", "Attr", 10, 100, "int", 0, 0, genRel("arel2", "Attr", 10, 100, "int", 0, 0, undefined)) consume
Result : TRUE
Operator : typeof
Number : 1
Signature: X -> X
Example : query genRel("nrel2", "Attr", 10, 100, "int", 0, 0, undefined) typeof consume
Result : typeerror