Ограничения на индексы
Максимальная длина ключа индекса ограничена 1/4 размера страницы.
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Ограничения на длину индексируемой строки
Максимальная длина индексируемой строки на 9 байтов меньше, чем максимальная длина ключа.Максимальная длина индексируемой строки зависит от размера страницы и набора символов.
Размер страницы |
Максимальная длина индексируемой строки для набора символов, байт/символ |
||||
|---|---|---|---|---|---|
1 |
2 |
3 |
4 |
6 |
|
4096 |
1015 |
507 |
338 |
253 |
169 |
8192 |
2039 |
1019 |
679 |
509 |
339 |
16384 |
4087 |
2043 |
1362 |
1021 |
681 |
32768 |
8183 |
4091 |
2727 |
2045 |
1363 |