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29 lines
984 B
C
29 lines
984 B
C
/************************************************************************
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Record manager global types
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(c) 1994-1996 Innobase Oy
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Created 5/30/1994 Heikki Tuuri
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*************************************************************************/
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#ifndef rem0types_h
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#define rem0types_h
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/* We define the physical record simply as an array of bytes */
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typedef byte rec_t;
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/* Maximum values for various fields (for non-blob tuples) */
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#define REC_MAX_N_FIELDS (1024 - 1)
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#define REC_MAX_HEAP_NO (2 * 8192 - 1)
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#define REC_MAX_N_OWNED (16 - 1)
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/* REC_MAX_INDEX_COL_LEN is measured in bytes and is the maximum
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indexed column length (or indexed prefix length). It is set to 3*256,
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so that one can create a column prefix index on 256 characters of a
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TEXT or VARCHAR column also in the UTF-8 charset. In that charset,
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a character may take at most 3 bytes.
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This constant MUST NOT BE CHANGED, or the compatibility of InnoDB data
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files would be at risk! */
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#define REC_MAX_INDEX_COL_LEN 768
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#endif
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