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Multiplecolumn Mapping

•    During plugin initialization, when InnoDBmemcachedis configured with information defined in the

containers table, each mapped column that is parsed from value_columnsis verified against

the mapped table. If multiple columns are mapped, there is a check to ensure that each column

exists and is the right type.

•    At run-time, for memcachedinsert operations, if there are morę delimiters in the value than the

number of mapped columns, only the number of mapped values are taken. For example, if there are

6 mapped columns and 7 delimited values are provided, only the first 6 delimited values are taken.

The 7th delimited value is ignored.

•    If there are fewer delimited values than mapped columns, unfilled columns are set toNULL. If an

unfilled column cannot be NULL, the insert will fail.

•    If a table has morę columns than mapped values, the extra columns do not affect output results.