Package org.apache.flink.table.catalog

Class Column.ComputedColumn

java.lang.Object
org.apache.flink.table.catalog.Column
org.apache.flink.table.catalog.Column.ComputedColumn
Enclosing class:
Column
@PublicEvolving public static final class Column.ComputedColumn extends Column
Representation of a computed column.

  • Method Details

    • withComment

      public Column.ComputedColumn withComment(String comment)
      Description copied from class: Column
      Add the comment to the column and return the new object.
      Specified by:
      withComment in class Column

    • isPhysical

      public boolean isPhysical()
      Description copied from class: Column
      Returns whether the given column is a physical column of a table; neither computed nor metadata.
      Specified by:
      isPhysical in class Column

    • isPersisted

      public boolean isPersisted()
      Description copied from class: Column
      Returns whether the given column is persisted in a sink operation.
      Specified by:
      isPersisted in class Column

    • getExpression

      public ResolvedExpression getExpression()

    • explainExtras

      public Optional<String> explainExtras()
      Description copied from class: Column
      Returns an explanation of specific column extras next to name and type.
      Specified by:
      explainExtras in class Column

    • copy

      public Column copy(DataType newDataType)
      Description copied from class: Column
      Returns a copy of the column with a replaced DataType.
      Specified by:
      copy in class Column

    • rename

      public Column rename(String newName)
      Description copied from class: Column
      Returns a copy of the column with a replaced name.
      Specified by:
      rename in class Column

    • equals

      public boolean equals(Object o)
      Overrides:
      equals in class Column

    • hashCode

      public int hashCode()
      Overrides:
      hashCode in class Column