defines

const (
	OKHeader          byte = 0x00
	ErrHeader         byte = 0xff
	EOFHeader         byte = 0xfe
	LocalInFileHeader byte = 0xfb
)

const (
	SharedFileServiceName = "SHARED"
	LocalFileServiceName  = "LOCAL"
	ETLFileServiceName    = "ETL"
)

const (
	// TEMPORARY_DBNAME used to store all temporary table created by session.
	// when a user tries to create a database with this name, will be rejected at the plan stage.
	TEMPORARY_DBNAME = "%!%mo_temp_db"

	// TEMPORARY_TABLE_TN_ADDR marked as virtual tn address only for temporary table
	// When a TargetDN.address in TxnRequest is TEMPORARY_TABLE_TN_ADDR, this TxnRequest is for temporary table
	// and execution flow will go to the func in handleTemp
	TEMPORARY_TABLE_TN_ADDR = "%!%mo_temp_db_dn_address"
)

const (
	NOT_NULL_FLAG     uint32 = 1 << 0 /**< Field can't be NULL */
	PRI_KEY_FLAG      uint32 = 1 << 1 /**< Field is part of a primary key */
	UNIQUE_KEY_FLAG   uint32 = 1 << 2 /**< Field is part of a unique key */
	MULTIPLE_KEY_FLAG uint32 = 1 << 3 /**< Field is part of a key */
	BLOB_FLAG         uint32 = 1 << 4 /**< Field is a blob */
	UNSIGNED_FLAG     uint32 = 1 << 5 /**< Field is unsigned */
	ZEROFILL_FLAG     uint32 = 1 << 6 /**< Field is zerofill */
	BINARY_FLAG       uint32 = 1 << 7 /**< Field is binary   */

	/* The following are only sent to new clients */
	ENUM_FLAG               uint32 = 1 << 8  /**< field is an enum */
	AUTO_INCREMENT_FLAG     uint32 = 1 << 9  /**< field is a autoincrement field */
	TIMESTAMP_FLAG          uint32 = 1 << 10 /**< Field is a timestamp */
	SET_FLAG                uint32 = 1 << 11 /**< field is a set */
	NO_DEFAULT_VALUE_FLAG   uint32 = 1 << 12 /**< Field doesn't have default value */
	ON_UPDATE_NOW_FLAG      uint32 = 1 << 13 /**< Field is set to NOW on UPDATE */
	NUM_FLAG                uint32 = 1 << 15 /**< Field is num (for clients) */
	PART_KEY_FLAG           uint32 = 1 << 14 /**< Intern; Part of some key */
	GROUP_FLAG              uint32 = 1 << 15 /**< Intern: Group field */
	UNIQUE_FLAG             uint32 = 1 << 16 /**< Intern: Used by sql_yacc */
	BINCMP_FLAG             uint32 = 1 << 17 /**< Intern: Used by sql_yacc */
	GET_FIXED_FIELDS_FLAG   uint32 = 1 << 18 /**< Used to get fields in item tree */
	FIELD_IN_PART_FUNC_FLAG uint32 = 1 << 19 /**< Field part of partition func */
	/**
	Intern: Field in TABLE object for new version of altered table,
		  which participates in a newly added index.
	*/
	FIELD_IN_ADD_INDEX             uint32 = (1 << 20)
	FIELD_IS_RENAMED               uint32 = (1 << 21) /**< Intern: Field is being renamed */
	FIELD_FLAGS_STORAGE_MEDIA      uint32 = 22        /**< Field storage media, bit 22-23 */
	FIELD_FLAGS_STORAGE_MEDIA_MASK uint32 = (3 << FIELD_FLAGS_STORAGE_MEDIA)
	FIELD_FLAGS_COLUMN_FORMAT      uint32 = 24 /**< Field column format, bit 24-25 */
	FIELD_FLAGS_COLUMN_FORMAT_MASK uint32 = (3 << FIELD_FLAGS_COLUMN_FORMAT)
	FIELD_IS_DROPPED               uint32 = (1 << 26) /**< Intern: Field is being dropped */
	EXPLICIT_NULL_FLAG             uint32 = (1 << 27) /**< Field is explicitly specified as NULL by the user */
	FIELD_IS_MARKED                uint32 = (1 << 28) /**< Intern: field is marked, general purpose */

	/** Field will not be loaded in secondary engine. */
	NOT_SECONDARY_FLAG uint32 = (1 << 29)
	/** Field is explicitly marked as invisible by the user. */
	FIELD_IS_INVISIBLE uint32 = (1 << 30)
)

const (
	MaxUint24 = 1<<24 - 1
	MaxInt24  = 1<<23 - 1
	MinInt24  = -1 << 23
)