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InnoDB limited the maximum number of bytes per character to 4. But, the filename character set that was introduced in MySQL 5.1 uses up to 5 bytes per character. To allow InnoDB tables to be created with wider characters, let us split the mbminmaxlen fields into mbminlen, mbmaxlen, and increase the limit to 7 bytes per character. This will increase the payload size of dtype_t and dict_col_t by one bit. The storage size will be unchanged (54 bits and 77 bits will use the same number of bytes as the previous sizes 53 and 76 bits). |
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| ha_innodb.cc | ||
| ha_innodb.h | ||
| handler0alter.cc | ||
| i_s.cc | ||
| i_s.h | ||