Enum Class SetOp

java.lang.Object
java.lang.Enum<SetOp>
org.huiche.ast.statement.SetOp
All Implemented Interfaces:
Serializable, Comparable<SetOp>, Constable, Segment
public enum SetOp extends Enum<SetOp> implements Segment
集合操作
Author:
Maning

  • Enum Constant Details

    • UNION

      public static final SetOp UNION
      并集

    • UNION_ALL

      public static final SetOp UNION_ALL
      并集 不去重

    • INTERSECT

      public static final SetOp INTERSECT
      交集

    • INTERSECT_ALL

      public static final SetOp INTERSECT_ALL
      交集 不去重

    • EXCEPT

      public static final SetOp EXCEPT
      差集

    • EXCEPT_ALL

      public static final SetOp EXCEPT_ALL
      差集 不去重

  • Method Details

    • values

      public static SetOp[] values()
      Returns an array containing the constants of this enum class, in the order they are declared.
      Returns:
      an array containing the constants of this enum class, in the order they are declared

    • valueOf

      public static SetOp valueOf(String name)
      Returns the enum constant of this class with the specified name. The string must match exactly an identifier used to declare an enum constant in this class. (Extraneous whitespace characters are not permitted.)
      Parameters:
      name - the name of the enum constant to be returned.
      Returns:
      the enum constant with the specified name
      Throws:
      IllegalArgumentException - if this enum class has no constant with the specified name
      NullPointerException - if the argument is null

    • pseudoSql

      public String pseudoSql()
      Description copied from interface: Segment
      伪SQL,用于直接toString时显示
      Specified by:
      pseudoSql in interface Segment
      Returns:
      伪SQL

    • staticable

      public boolean staticable()
      Description copied from interface: Segment
      是否静态化的,即不必转译
      Specified by:
      staticable in interface Segment
      Returns:
      是否静态化