diff options
Diffstat (limited to 'strings/CHARSET_INFO.txt')
| -rw-r--r-- | strings/CHARSET_INFO.txt | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/strings/CHARSET_INFO.txt b/strings/CHARSET_INFO.txt index f7a10f95880..3fd262c6f12 100644 --- a/strings/CHARSET_INFO.txt +++ b/strings/CHARSET_INFO.txt @@ -33,7 +33,7 @@ typedef struct charset_info_st uint strxfrm_multiply; uint mbminlen; uint mbmaxlen; - char max_sort_char; /* For LIKE optimization */ + uint16 max_sort_char; /* For LIKE optimization */ MY_CHARSET_HANDLER *cset; MY_COLLATION_HANDLER *coll; @@ -134,7 +134,15 @@ Misc fields mbmaxlen - maximum multibyte sequence length. 1 for 8bit charsets. Can be also 2 or 3. - + max_sort_char - for LIKE range + in case of 8bit character sets - native code + of maximum character (max_str pad byte); + in case of UTF8 and UCS2 - Unicode code of the maximum + possible character (usually U+FFFF). This code is + converted to multibyte representation (usually 0xEFBFBF) + and then used as a pad sequence for max_str. + in case of other multibyte character sets - + max_str pad byte (usually 0xFF). MY_CHARSET_HANDLER ================== |