Fix a bug in the storage of the SQL NULL value in 64-bit computers: the value code must fit in 32 bits


innobase/include/univ.i:
  Fix a bug in the storage of the SQL NULL value in 64-bit computers: the value code must fit in 32 bits
This commit is contained in:
unknown 2002-07-23 01:59:43 +03:00
commit 9e95f76000

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@ -204,8 +204,12 @@ headers may define 'bool' differently. Do not assume that 'bool' is a ulint! */
#endif
/* The following number as the length of a logical field means that the field
has the SQL NULL as its value. */
#define UNIV_SQL_NULL ULINT_UNDEFINED
has the SQL NULL as its value. NOTE that because we assume that the length
of a field is a 32-bit integer when we store it, for example, to an undo log
on disk, we must have also this number fit in 32 bits, also in 64-bit
computers! */
#define UNIV_SQL_NULL ULINT32_UNDEFINED
/* Lengths which are not UNIV_SQL_NULL, but bigger than the following
number indicate that a field contains a reference to an externally