enum_query_type.h

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#ifndef ENUM_QUERY_TYPE_INCLUDED
#define ENUM_QUERY_TYPE_INCLUDED

/**
   Query type constants (usable as bitmap flags).
*/

enum enum_query_type {
  /// Nothing specific, ordinary SQL query.
  QT_ORDINARY = 0,

  /// In utf8.
  QT_TO_SYSTEM_CHARSET = (1 << 0),

  /// Without character set introducers.
  QT_WITHOUT_INTRODUCERS = (1 << 1),

  /**
    Causes string literals to always be printed with character set
    introducers. Takes precedence over QT_WITHOUT_INTRODUCERS.
  */
  QT_FORCE_INTRODUCERS = (1 << 2),

  /// When printing a SELECT, add its number (query_block->number).
  QT_SHOW_SELECT_NUMBER = (1 << 3),

  /// Don't print a database if it's equal to the connection's database.
  QT_NO_DEFAULT_DB = (1 << 4),

  /// When printing a derived table, don't print its expression, only alias.
  QT_DERIVED_TABLE_ONLY_ALIAS = (1 << 5),

  /// Print in charset of Item::print() argument (typically thd->charset()).
  QT_TO_ARGUMENT_CHARSET = (1 << 6),

  /// Print identifiers without database's name.
  QT_NO_DB = (1 << 7),

  /// Print identifiers without table's name.
  QT_NO_TABLE = (1 << 8),

  /**
    Change all Item_basic_constant to ? (used by query rewrite to compute
    digest.) Un-resolved hints will also be printed in this format.
  */
  QT_NORMALIZED_FORMAT = (1 << 9),

  /**
    If an expression is constant, print the expression, not the value
    it evaluates to. Should be used for error messages, so that they
    don't reveal values.
  */
  QT_NO_DATA_EXPANSION = (1 << 10),

  /**
    Don't print the QB name. Used for the INSERT part of an INSERT...SELECT.
  */
  QT_IGNORE_QB_NAME = (1 << 11),

  /**
    Print only the QB name. Used for the SELECT part of an INSERT...SELECT.
  */
  QT_ONLY_QB_NAME = (1 << 12),

  /**
    When printing subselects, print only the select number
    (like QT_SHOW_SELECT_NUMBER), not the actual subselect text.
   */
  QT_SUBSELECT_AS_ONLY_SELECT_NUMBER = (1 << 13),

  /**
    Suppress the internal rollup functions used for switching items to NULL
    or between different sums; these are different from most other internal
    Items we insert, since they are inserted during resolving and not
    optimization. Used when getting the canonical representation of a view.
   */
  QT_HIDE_ROLLUP_FUNCTIONS = (1 << 14)

};

#endif  // ENUM_QUERY_TYPE_INCLUDED