org.apache.spark.sql.catalyst.expressions

ExtractValue

object ExtractValue

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  6. def apply(child: Expression, extraction: Expression, resolver: (String, String) ⇒ Boolean): Expression

    Returns the resolved ExtractValue.

    Returns the resolved ExtractValue. It will return one kind of concrete ExtractValue, depend on the type of child and extraction.

    child | extraction | concrete ExtractValue ---------------------------------------------------------------- Struct | Literal String | GetStructField Array[Struct] | Literal String | GetArrayStructFields Array | Integral type | GetArrayItem Map | map key type | GetMapValue

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