object MakeSchema
The MakeSchema object attempts to infers the domain of a relation without a
domain specification and creates a new relation with the inferred domains by
examining the data. Should be checked and overridden when inaccurate.
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- def analyzeType(c: VectorS, samplePercent: Int = 100, mapString: Boolean = false): (Vec, String)
Analyze the type of a given
VectorSby using regular expression matching.Analyze the type of a given
VectorSby using regular expression matching. Types can be Integer (I), Long (L), Double (D), etc.- c
the VectorS to have its type analyzed
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the percentage of 'c' used to analyze the type of 'c'
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flag used to map each distinct string in 'c' to a distinct integer
- def apply(r: Relation): Relation
Infer the domains of a domain-less relation and create a new relation with the inferred domains (e.g., 'IIDIS').
Infer the domains of a domain-less relation and create a new relation with the inferred domains (e.g., 'IIDIS').
- r
the relation to have its domain inferred
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