olap.h

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/* Copyright (c) 2023, 2025, Oracle and/or its affiliates.
 
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#ifndef SQL_OLAP_TYPES_H
#define SQL_OLAP_TYPES_H
 
#include <stdint.h>
#include <stdio.h>
#include <sys/types.h>
 
enum olap_type {
  UNSPECIFIED_OLAP_TYPE,
  ROLLUP_TYPE,
  CUBE_TYPE,
  GROUPING_SETS_TYPE
};
 
inline const char *GroupByModifierString(enum olap_type olap) {
  switch (olap) {
    case ROLLUP_TYPE: {
      return "ROLLUP";
    }
    case CUBE_TYPE: {
      return "CUBE";
    }
    case GROUPING_SETS_TYPE: {
      return "GROUPING SETS";
    }
    default: {
      return "UNDEFINED";
    }
  }
}
 
/* Maximum number of Group By modifier branches to be supported is 128 */
inline int GetMaximumNumGrpByColsSupported(enum olap_type olap) {
  switch (olap) {
    case ROLLUP_TYPE: {
      return 127;
    }
    case CUBE_TYPE: {
      return 7; /* (2^7) = 128*/
    }
    case GROUPING_SETS_TYPE: {
      return 128;
    }
    default: {
      return 0;
    }
  }
}
 
#endif  // SQL_OLAP_TYPES_H