text: /*-------------------------------------------------------------------------
   *
   * nodeUnique.h
   *
   *
   *
   * Portions Copyright (c) 1996-2017, PostgreSQL Global Development Group
   * Portions Copyright (c) 1994, Regents of the University of California
   *
   * src/include/executor/nodeUnique.h
   *
   *-------------------------------------------------------------------------
   */
  #ifndef NODEUNIQUE_H
  #define NODEUNIQUE_H
  
  #include "nodes/execnodes.h"
  
  extern UniqueState *ExecInitUnique(Unique *node, EState *estate, int eflags);
  extern TupleTableSlot *ExecUnique(UniqueState *node);
  extern void ExecEndUnique(UniqueState *node);
  extern void ExecReScanUnique(UniqueState *node);
  
  #endif   /* NODEUNIQUE_H */
  